UnknownHostException raised on calling ressource URL with RouteLocatorBuilder

UnknownHostException raised on calling ressource URL with RouteLocatorBuilder - spring-boot

I have to use spring-cloud-gateway.
I got some trouble to configure just a simple spring-boot project with it form this tutoriel https://spring.io/guides/gs/gateway/
#SpringBootApplication
#RestController
public class MarouteApplication {
#Bean
public RouteLocator maRoute(RouteLocatorBuilder builder) {
return builder.routes()
.route(p -> p
.path("/get")
.filters(f -> f.addRequestHeader("Hello", "World"))
.uri("http://httpbin.org:80"))
.route(p -> p
.path("/bling")
.uri("http://localhost:9090/test"))
.build();
}
#GetMapping(value = "/test")
public ResponseEntity<String> getPerso() throws Exception {
return ResponseEntity.ok("{\"value\":\"OK\"}");
}
public static void main(String[] args) {
SpringApplication.run(MarouteApplication.class, args);
}
}
application.yaml
spring:
cloud:
gateway:
proxy:
host: %MY_PROXY_BUT_ITS_HIDDEN%
port: 8080
routes:
- id: rewritepath_route
uri: http://example.org
predicates:
- Path=/foo/**
management:
endpoints:
web:
exposure:
include: '*'
metrics:
web:
server:
auto-time-requests: true
server:
port: 9090
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.maroute</groupId>
<artifactId>maroute</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>maroute</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
So I have three route, two configured through RouteLocatorBuilder. And one configured through application.yaml.
Endpoint http://localhost:9090/test works.
For route /get I got:
2019-09-09 16:06:46.026 ERROR 5469 --- [or-http-epoll-3] a.w.r.e.AbstractErrorWebExceptionHandler : [95d74b07] 500 Server Error for HTTP GET "/get"
java.net.UnknownHostException: httpbin.org
at java.base/java.net.InetAddress$CachedAddresses.get(InetAddress.java:797) ~[na:na]
at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505) ~[na:na]
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364) ~[na:na]
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298) ~[na:na]
at java.base/java.net.InetAddress.getByName(InetAddress.java:1248) ~[na:na]
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:146) ~[netty-common-4.1.39.Final.jar:4.1.39.Final]
at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:143) ~[netty-common-4.1.39.Final.jar:4.1.39.Final]
at java.base/java.security.AccessController.doPrivileged(Native Method) ~[na:na]
at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:143) ~[netty-common-4.1.39.Final.jar:4.1.39.Final]
at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43) ~[netty-resolver-4.1.39.Final.jar:4.1.39.Final]
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63) ~[netty-resolver-4.1.39.Final.jar:4.1.39.Final]
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55) ~[netty-resolver-4.1.39.Final.jar:4.1.39.Final]
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57) ~[netty-resolver-4.1.39.Final.jar:4.1.39.Final]
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32) ~[netty-resolver-4.1.39.Final.jar:4.1.39.Final]
at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108) ~[netty-resolver-4.1.39.Final.jar:4.1.39.Final]
at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:204) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:166) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:120) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.pool.SimpleChannelPool.connectChannel(SimpleChannelPool.java:263) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.pool.SimpleChannelPool.acquireHealthyFromPoolOrNew(SimpleChannelPool.java:175) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.pool.SimpleChannelPool.acquire(SimpleChannelPool.java:160) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at reactor.netty.resources.PooledConnectionProvider$Pool.acquire(PooledConnectionProvider.java:258) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.netty.resources.PooledConnectionProvider$Pool.acquire(PooledConnectionProvider.java:252) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.netty.resources.PooledConnectionProvider.disposableAcquire(PooledConnectionProvider.java:204) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.netty.resources.PooledConnectionProvider.lambda$acquire$2(PooledConnectionProvider.java:162) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:57) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect.lambda$subscribe$0(HttpClientConnect.java:327) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.core.publisher.MonoCreate.subscribe(MonoCreate.java:57) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxRetryPredicate$RetryPredicateSubscriber.resubscribe(FluxRetryPredicate.java:123) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoRetryPredicate.subscribe(MonoRetryPredicate.java:51) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.netty.http.client.HttpClientConnect$MonoHttpConnect.subscribe(HttpClientConnect.java:330) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.core.publisher.MonoFlatMapMany.subscribe(MonoFlatMapMany.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Flux.subscribe(Flux.java:7923) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeek.subscribe(MonoPeek.java:71) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:74) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDoFinally.subscribe(MonoDoFinally.java:47) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.innerNext(FluxConcatMap.java:275) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:849) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:114) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:144) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:114) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.innerNext(FluxConcatMap.java:275) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:849) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:73) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:192) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFilterWhen$MonoFilterWhenMain.onNext(MonoFilterWhen.java:140) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2071) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFilterWhen$MonoFilterWhenMain.onSubscribe(MonoFilterWhen.java:103) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFilterWhen.subscribe(MonoFilterWhen.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeek.subscribe(MonoPeek.java:71) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:442) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onNext(FluxConcatMap.java:244) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxDematerialize$DematerializeSubscriber.onNext(FluxDematerialize.java:114) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxDematerialize$DematerializeSubscriber.onNext(FluxDematerialize.java:42) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:243) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:201) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxDematerialize$DematerializeSubscriber.request(FluxDematerialize.java:157) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:229) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxDematerialize$DematerializeSubscriber.onSubscribe(FluxDematerialize.java:88) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxDematerialize.subscribe(FluxDematerialize.java:39) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxDefer.subscribe(FluxDefer.java:54) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMap.subscribe(MonoMap.java:55) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMap.subscribe(MonoMap.java:55) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:442) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:212) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeekTerminal.subscribe(MonoPeekTerminal.java:61) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:70) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeekTerminal.subscribe(MonoPeekTerminal.java:61) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.netty.http.server.HttpServerHandle.onStateChange(HttpServerHandle.java:64) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.netty.tcp.TcpServerBind$ChildObserver.onStateChange(TcpServerBind.java:226) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.netty.http.server.HttpServerOperations.onInboundNext(HttpServerOperations.java:442) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:91) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at reactor.netty.http.server.HttpTrafficHandler.channelRead(HttpTrafficHandler.java:161) ~[reactor-netty-0.8.11.RELEASE.jar:0.8.11.RELEASE]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:328) ~[netty-codec-4.1.39.Final.jar:4.1.39.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:302) ~[netty-codec-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1421) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:930) ~[netty-transport-4.1.39.Final.jar:4.1.39.Final]
at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:794) ~[netty-transport-native-epoll-4.1.39.Final-linux-x86_64.jar:4.1.39.Final]
at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:424) ~[netty-transport-native-epoll-4.1.39.Final-linux-x86_64.jar:4.1.39.Final]
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:326) ~[netty-transport-native-epoll-4.1.39.Final-linux-x86_64.jar:4.1.39.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918) ~[netty-common-4.1.39.Final.jar:4.1.39.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.39.Final.jar:4.1.39.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.39.Final.jar:4.1.39.Final]
at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
I got the same error for /foo route:
2019-09-09 16:07:58.830 ERROR 5469 --- [or-http-epoll-3] a.w.r.e.AbstractErrorWebExceptionHandler : [95d74b07] 500 Server Error for HTTP GET "/foo"
java.net.UnknownHostException: example.org
at java.base/java.net.InetAddress$CachedAddresses.get(InetAddress.java:797) ~[na:na]
at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1505) ~[na:na]
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1364) ~[na:na]
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1298) ~[na:na]
at java.base/java.net.InetAddress.getByName(InetAddress.java:1248) ~[na:na]
And for /bling route I got 413 code error (Request Entity Too Large)
I have suspected my proxy to no allow external sites so I configure It in application.yaml. Result does not change.
If anybody has any idea

So I can't access to external websites due to my professional environnement that not allow that. In others computers (like my personnal one) it is working.
The route works if I redirect to others local endpoint. You can not reroute to the same port endpoint that explains 413 error.
So I started new API on another port and it is working.
It is important to know that for this route:
#Bean
public RouteLocator maRoute(RouteLocatorBuilder builder) {
return builder.routes()
.route(p -> p
.path("/foo")
.uri("http://localhost:8080/test"))
.build();
}
The route redirect to http://localhost:8080/foo
So if you have no endpoint in http:localhost:8080/foo you will have 404.
You can use many way to redirect to 8080/test like:
#Bean
public RouteLocator maRoute(RouteLocatorBuilder builder) {
return builder.routes()
.route(p -> p
.path("/test")
.uri("http://localhost:8080"))
.build();
}
or if you want to keep redirect with /foo endpoint
#Bean
public RouteLocator maRoute(RouteLocatorBuilder builder) {
return builder.routes()
.route(p -> p
.path("/foo")
.filters(f -> f.rewritePath("/foo", "/test"))
.uri("http://localhost:8080"))
.build();
}
In addition, if you want to know if your route redirect to what you really expect you can configure logging level in you application.yaml or properties:
logging:
level:
org.springframework.cloud.gateway: TRACE
org.springframework.http.server.reactive: DEBUG
org.springframework.web.reactive: DEBUG
reactor.ipc.netty: DEBUG
reactor.netty: DEBUG

Related

WebClient Flux to List not working with block

I am new to webclient. I have create a generic common library for inter microservice communication.
I am trying to post some data to get persist using webclient which works fine and able to get the data as well.
Now I need to some business logic on the return data by the web client. For that I am trying to convert the Flux to List of object, I am getting
java.lang.IllegalStateException: block()/blockFirst()/blockLast() are
* blocking, which is not supported in thread reactor-http-nio-3
Code:
#Override
public Flux<EmployeeDTO> getAllEmployees() {
WebClientRequest<EmployeeDTO> employeeWebClientRequest = new WebClientRequest<>();
employeeWebClientRequest.setRequestTracker(UUID.randomUUID().toString());
employeeWebClientRequest.setContentType("application/json");
EmployeeDTO employeeDTO = new EmployeeDTO();
employeeDTO.setEmployeeName("MTRS");
employeeDTO.setFirstname("MT");
employeeDTO.setLastName("RS");
employeeWebClientRequest.setWebClientBody(employeeDTO);
employeeWebClientRequest.setEndPoint("http://localhost:8080/api/employees");
Flux<EmployeeDTO> postListAsynchronousWebClient = webClientEmployee
.postListAsynchronousWebClient(employeeWebClientRequest, EmployeeDTO.class);
List<EmployeeDTO> block = postListAsynchronousWebClient.collectList().block();// Failing Line
/*
*
* java.lang.IllegalStateException: block()/blockFirst()/blockLast() are
* blocking, which is not supported in thread reactor-http-nio-3 at
* reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:83)
* ~[reactor-core-3.4.21.jar:3.4.21] Suppressed:
* reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
*/
return postListAsynchronousWebClient;
}
public <T> Flux<K> postListAsynchronousWebClient(WebClientRequest<T> webClientRequest, Class<K> clazz) {
if (null == webClientRequest.getRequestTracker()) {
return Flux.error(new MtampWebClientException("", requestTrackerErrorCode, requestTrackerErrorMessage));
}
ResponseSpec retrieve = performPostWebRequest(webClientRequest);
return retrieve.bodyToFlux(clazz).doOnNext(resp -> webClientResponse(webClientRequest, resp));
}
private <T> ResponseSpec performPostWebRequest(WebClientRequest<T> webClientRequest) {
WebClient client = webClientBuilder();
client.get().headers(h-> System.out.println(h));
LinkedMultiValueMap<String, String> map = setHeaders(webClientRequest);
Consumer<HttpHeaders> consumer = it -> it.addAll(map);
ResponseSpec retrieve;
if (null != webClientRequest.getPathParam()) {
retrieve = client.post().uri(webClientRequest.getEndPoint() + "/" + webClientRequest.getPathParam())
.bodyValue(webClientRequest.getWebClientBody()).headers(consumer).retrieve();
} else {
retrieve = client.post().uri(webClientRequest.getEndPoint()).bodyValue(webClientRequest.getWebClientBody())
.headers(consumer).retrieve();
}
return retrieve;
}
private WebClient webClientBuilder() {
HttpClient httpClient = HttpClient.create().option(ChannelOption.CONNECT_TIMEOUT_MILLIS, webClientTimeOut)
.responseTimeout(Duration.ofMillis(webClientResponseTimeOut)).doOnConnected(
conn -> conn.addHandlerLast(new ReadTimeoutHandler(webClientReadTimeOut, TimeUnit.MILLISECONDS))
.addHandlerLast(new WriteTimeoutHandler(webClientWriteTimeOut, TimeUnit.MILLISECONDS)));
return WebClient.builder().filter(new WebClientFilter()).filter(ExchangeFilterFunction.ofResponseProcessor(this::errorHandler))
.clientConnector(new ReactorClientHttpConnector(httpClient)).build();
}
The whole exception log below:
java.lang.IllegalStateException: block()/blockFirst()/blockLast() are blocking, which is not supported in thread reactor-http-nio-3
at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:83) ~[reactor-core-3.4.21.jar:3.4.21]
Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
*__checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
*__checkpoint ⇢ HTTP GET "/api/employees" [ExceptionHandlingWebHandler]
Original Stack Trace:
at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:83) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Mono.block(Mono.java:1707) ~[reactor-core-3.4.21.jar:3.4.21]
at com.mt.mtamp.webclient.service.impl.WebClientServiceImpl.getAllEmployees(WebClientServiceImpl.java:71) ~[classes/:na]
at com.mt.mtamp.webclient.controller.WebClientController.getAllEmployees(WebClientController.java:50) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
at org.springframework.web.reactive.result.method.InvocableHandlerMethod.lambda$invoke$0(InvocableHandlerMethod.java:144) ~[spring-webflux-5.3.22.jar:5.3.22]
at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:152) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoFlatMap.subscribeOrReturn(MonoFlatMap.java:53) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:240) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onComplete(MonoIgnoreThen.java:203) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:181) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Operators.complete(Operators.java:137) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoZip.subscribe(MonoZip.java:120) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.innerNext(FluxConcatMap.java:282) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:863) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onNext(MonoPeekTerminal.java:180) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2398) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.request(MonoPeekTerminal.java:139) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:171) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:2194) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:2068) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:96) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onSubscribe(MonoPeekTerminal.java:152) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:451) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:219) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:165) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:87) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.core.publisher.MonoDeferContextual.subscribe(MonoDeferContextual.java:55) ~[reactor-core-3.4.21.jar:3.4.21]
at reactor.netty.http.server.HttpServer$HttpServerHandle.onStateChange(HttpServer.java:967) ~[reactor-netty-http-1.0.21.jar:1.0.21]
at reactor.netty.ReactorNetty$CompositeConnectionObserver.onStateChange(ReactorNetty.java:677) ~[reactor-netty-core-1.0.21.jar:1.0.21]
at reactor.netty.transport.ServerTransport$ChildObserver.onStateChange(ServerTransport.java:478) ~[reactor-netty-core-1.0.21.jar:1.0.21]
at reactor.netty.http.server.HttpServerOperations.onInboundNext(HttpServerOperations.java:570) ~[reactor-netty-http-1.0.21.jar:1.0.21]
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:93) ~[reactor-netty-core-1.0.21.jar:1.0.21]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at reactor.netty.http.server.HttpTrafficHandler.channelRead(HttpTrafficHandler.java:222) ~[reactor-netty-http-1.0.21.jar:1.0.21]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) ~[netty-codec-4.1.79.Final.jar:4.1.79.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:299) ~[netty-codec-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:722) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:658) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:584) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.79.Final.jar:4.1.79.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.79.Final.jar:4.1.79.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.79.Final.jar:4.1.79.Final]
at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]

Spring Webflux: Assertion for redirectUriTemplate to be not null, even though I am using OAuth 2.0 client credentials

I am using Spring Boot 2.2.4 with spring-boot-starter-webflux, spring-boot-starter-security and spring-security-oauth2-client.
With the reactive WebClient I want to call Auth0's management API using OAuth 2.0 client credentials to get some user information.
I have followed Baeldung's Spring WebClient and OAuth2 Support tutorial. My application.properties looks like this:
spring.security.oauth2.client.registration.auth0.authorization-grant-type=client_credentials
spring.security.oauth2.client.registration.auth0.client-id=XXX
spring.security.oauth2.client.registration.auth0.client-secret=YYY
spring.security.oauth2.client.provider.auth0.token-uri=https://ZZZ.eu.auth0.com/oauth/token
My Spring #Configuration like this:
#Configuration
#RequiredArgsConstructor
class Auth0Configuration {
#Value("${auth0.api.base-url}")
private final String auth0ApiBaseUrl;
#Bean
WebClient auth0WebClient(ReactiveClientRegistrationRepository reactiveClientRegistrationRepository) {
ServerOAuth2AuthorizedClientExchangeFilterFunction oauth =
new ServerOAuth2AuthorizedClientExchangeFilterFunction(
reactiveClientRegistrationRepository,
new UnAuthenticatedServerOAuth2AuthorizedClientRepository());
oauth.setDefaultClientRegistrationId("auth0");
return WebClient.builder()
.filter(oauth)
.baseUrl(auth0ApiBaseUrl)
.build();
}
}
But when I make the first call with the WebClient, this error occurs:
2020-02-12 20:18:11.098 ERROR 1945 --- [ctor-http-nio-3] a.w.r.e.AbstractErrorWebExceptionHandler : [f0218135] 500 Server Error for HTTP GET "/oauth2/authorization/auth0"
java.lang.IllegalArgumentException: URI must not be null
at org.springframework.util.Assert.notNull(Assert.java:198)
Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
|_ checkpoint ⇢ org.springframework.security.oauth2.client.web.server.OAuth2AuthorizationRequestRedirectWebFilter [DefaultWebFilterChain]
|_ checkpoint ⇢ org.springframework.security.web.server.context.ReactorContextWebFilter [DefaultWebFilterChain]
|_ checkpoint ⇢ org.springframework.security.web.server.csrf.CsrfWebFilter [DefaultWebFilterChain]
|_ checkpoint ⇢ org.springframework.security.web.server.header.HttpHeaderWriterWebFilter [DefaultWebFilterChain]
|_ checkpoint ⇢ org.springframework.security.config.web.server.ServerHttpSecurity$ServerWebExchangeReactorContextWebFilter [DefaultWebFilterChain]
|_ checkpoint ⇢ org.springframework.security.web.server.WebFilterChainProxy [DefaultWebFilterChain]
|_ checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
|_ checkpoint ⇢ HTTP GET "/oauth2/authorization/auth0" [ExceptionHandlingWebHandler]
Stack trace:
at org.springframework.util.Assert.notNull(Assert.java:198)
at org.springframework.web.util.UriComponentsBuilder.fromUriString(UriComponentsBuilder.java:212)
at org.springframework.security.oauth2.client.web.server.DefaultServerOAuth2AuthorizationRequestResolver.expandRedirectUri(DefaultServerOAuth2AuthorizationRequestResolver.java:214)
at org.springframework.security.oauth2.client.web.server.DefaultServerOAuth2AuthorizationRequestResolver.authorizationRequest(DefaultServerOAuth2AuthorizationRequestResolver.java:131)
at org.springframework.security.oauth2.client.web.server.DefaultServerOAuth2AuthorizationRequestResolver.lambda$resolve$3(DefaultServerOAuth2AuthorizationRequestResolver.java:121)
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:100)
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67)
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2199)
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:2007)
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:1881)
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:112)
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2199)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:184)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:81)
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.Mono.subscribe(Mono.java:4105)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172)
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56)
at reactor.core.publisher.Mono.subscribe(Mono.java:4105)
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:75)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:174)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:174)
at reactor.core.publisher.FluxFilter$FilterSubscriber.onComplete(FluxFilter.java:160)
at reactor.core.publisher.FluxFilter$FilterConditionalSubscriber.onComplete(FluxFilter.java:293)
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:78)
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1638)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:144)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:112)
at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onNext(FluxMapFuseable.java:287)
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2199)
at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.request(FluxMapFuseable.java:346)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:184)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:81)
at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onSubscribe(FluxMapFuseable.java:255)
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1637)
at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241)
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1637)
at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onComplete(MonoCollectList.java:121)
at reactor.core.publisher.FluxIterable$IterableSubscription.fastPath(FluxIterable.java:333)
at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:198)
at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onSubscribe(MonoCollectList.java:72)
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139)
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63)
at reactor.core.publisher.MonoFromFluxOperator.subscribe(MonoFromFluxOperator.java:72)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67)
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76)
at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.drain(FluxFilterWhen.java:295)
at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.onNext(FluxFilterWhen.java:134)
at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:243)
at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:201)
at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.onSubscribe(FluxFilterWhen.java:194)
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139)
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52)
at reactor.core.publisher.Mono.subscribe(Mono.java:4105)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172)
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56)
at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:55)
at reactor.netty.http.server.HttpServerHandle.onStateChange(HttpServerHandle.java:64)
at reactor.netty.tcp.TcpServerBind$ChildObserver.onStateChange(TcpServerBind.java:228)
at reactor.netty.http.server.HttpServerOperations.onInboundNext(HttpServerOperations.java:465)
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:90)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
at reactor.netty.http.server.HttpTrafficHandler.channelRead(HttpTrafficHandler.java:167)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:321)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:295)
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:363)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:830)
When following the stack trace I see that the property redirectUriTemplate in the ClientRegistration is null. But since I am using client credentials a redirect URI shouldn't be needed at all.
Is there an error in my configuration? How can I make WebClient work with the client credentials flow?

The application is working now with this configuration:
#Configuration
#RequiredArgsConstructor
#Slf4j
class Auth0Configuration {
// some properties
#Bean
WebClient auth0WebClient(ReactiveOAuth2AuthorizedClientManager authorizedClientManager) {
var exchangeFilterFunction = new ServerOAuth2AuthorizedClientExchangeFilterFunction(authorizedClientManager);
exchangeFilterFunction.setDefaultClientRegistrationId(AUTH_0_CLIENT_REGISTRATION_ID);
return WebClient.builder()
.baseUrl(auth0ApiBaseUrl)
.filter(exchangeFilterFunction)
.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.build();
}
#Bean
public ReactiveClientRegistrationRepository reactiveClientRegistrationRepository() {
return new InMemoryReactiveClientRegistrationRepository(
ClientRegistration.withRegistrationId(AUTH_0_CLIENT_REGISTRATION_ID)
.authorizationGrantType(AuthorizationGrantType.CLIENT_CREDENTIALS)
.tokenUri(auth0TokenUri)
.clientAuthenticationMethod(ClientAuthenticationMethod.POST)
.clientId(auth0ClientId)
.clientSecret(auth0ClientSecret)
.scope()
.build()
);
}
#Bean
public ReactiveOAuth2AuthorizedClientManager reactiveOAuth2AuthorizedClientManager(ReactiveClientRegistrationRepository clientRegistrationRepository) {
DefaultReactiveOAuth2AuthorizedClientManager authorizedClientManager =
new DefaultReactiveOAuth2AuthorizedClientManager(clientRegistrationRepository, new UnAuthenticatedServerOAuth2AuthorizedClientRepository());
authorizedClientManager.setAuthorizedClientProvider(ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
.clientCredentials(clientCredentialsGrantBuilder -> {
WebClientReactiveClientCredentialsTokenResponseClient accessTokenResponseClient = new WebClientReactiveClientCredentialsTokenResponseClient();
accessTokenResponseClient.setWebClient(WebClient.builder()
.filter((request, next) -> {
FormInserter<String> body = (FormInserter<String>) request.body();
body.with("audience", auth0Audience);
return next.exchange(request);
})
.build());
clientCredentialsGrantBuilder.accessTokenResponseClient(accessTokenResponseClient);
}
)
.build()
);
return authorizedClientManager;
}
}

BlockHound throws blocking call exception when using bean validation in Webflux

I tested BlockHound on our Spring Boot 2.1.8 application with Webflux and I encountered a blocking call inside bean validation. To make sure that's for sure not caused by our logic I created simple Webflux app with one endpoint.
That's a simple controller from the app:
#RestController
#RequestMapping("/v1/test")
#Validated
class TestController {
#PostMapping("/{type}", consumes = [MediaType.APPLICATION_JSON_VALUE])
fun testPost(#PathVariable type: String, #Valid #RequestBody entry: TestEntry): Mono<TestEntry> {
return Mono.just(TestEntry("${entry.data} - $type"))
}
}
#JsonInclude(JsonInclude.Include.NON_NULL)
data class TestEntry(
#field:NotNull val data: String?
)
And in the main method I run Block Hound JVM agent:
#SpringBootApplication
class DemoApplication
fun main(args: Array<String>) {
BlockHound.install()
runApplication<DemoApplication>(*args)
}
After sending request to my endpoint I get this exception:
java.lang.Error: Blocking call! java.io.RandomAccessFile#readBytes
at reactor.blockhound.BlockHound$Builder.lambda$new$0(BlockHound.java:196) ~[blockhound-1.0.1.RELEASE.jar:na]
Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
|_ checkpoint ⇢ HTTP POST "/v1/test/type1" [ExceptionHandlingWebHandler]
Stack trace:
at reactor.blockhound.BlockHound$Builder.lambda$new$0(BlockHound.java:196) ~[blockhound-1.0.1.RELEASE.jar:na]
at reactor.blockhound.BlockHound$Builder.lambda$install$6(BlockHound.java:318) ~[blockhound-1.0.1.RELEASE.jar:na]
at reactor.blockhound.BlockHoundRuntime.checkBlocking(BlockHoundRuntime.java:46) ~[na:na]
at java.base/java.io.RandomAccessFile.readBytes(RandomAccessFile.java) ~[na:na]
at java.base/java.io.RandomAccessFile.read(RandomAccessFile.java:406) ~[na:na]
at java.base/java.io.RandomAccessFile.readFully(RandomAccessFile.java:470) ~[na:na]
at java.base/java.util.zip.ZipFile$Source.readFullyAt(ZipFile.java:1298) ~[na:na]
at java.base/java.util.zip.ZipFile$ZipFileInputStream.initDataOffset(ZipFile.java:997) ~[na:na]
at java.base/java.util.zip.ZipFile$ZipFileInputStream.read(ZipFile.java:1012) ~[na:na]
at java.base/java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(ZipFile.java:467) ~[na:na]
at java.base/java.util.zip.InflaterInputStream.read(InflaterInputStream.java:159) ~[na:na]
at java.base/java.io.InputStream.readNBytes(InputStream.java:490) ~[na:na]
at java.base/java.util.jar.JarFile.getBytes(JarFile.java:805) ~[na:na]
at java.base/java.util.jar.JarFile.checkForSpecialAttributes(JarFile.java:1005) ~[na:na]
at java.base/java.util.jar.JarFile.isMultiRelease(JarFile.java:388) ~[na:na]
at java.base/java.util.jar.JarFile.getEntry(JarFile.java:507) ~[na:na]
at java.base/sun.net.www.protocol.jar.URLJarFile.getEntry(URLJarFile.java:131) ~[na:na]
at java.base/sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:137) ~[na:na]
at java.base/sun.net.www.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:155) ~[na:na]
at java.base/java.net.URL.openStream(URL.java:1117) ~[na:na]
at java.base/java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1738) ~[na:na]
at java.base/java.lang.Class.getResourceAsStream(Class.java:2651) ~[na:na]
at org.springframework.core.LocalVariableTableParameterNameDiscoverer.inspectClass(LocalVariableTableParameterNameDiscoverer.java:94) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705) ~[na:na]
at org.springframework.core.LocalVariableTableParameterNameDiscoverer.doGetParameterNames(LocalVariableTableParameterNameDiscoverer.java:84) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.core.LocalVariableTableParameterNameDiscoverer.getParameterNames(LocalVariableTableParameterNameDiscoverer.java:72) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.core.PrioritizedParameterNameDiscoverer.getParameterNames(PrioritizedParameterNameDiscoverer.java:55) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean$1.getParameterNames(LocalValidatorFactoryBean.java:325) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.hibernate.validator.internal.util.ExecutableParameterNameProvider.getParameterNames(ExecutableParameterNameProvider.java:37) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.metadata.aggregated.ParameterMetaData$Builder.build(ParameterMetaData.java:169) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.metadata.aggregated.ExecutableMetaData$Builder.findParameterMetaData(ExecutableMetaData.java:435) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.metadata.aggregated.ExecutableMetaData$Builder.build(ExecutableMetaData.java:388) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.metadata.aggregated.BeanMetaDataImpl$BuilderDelegate.build(BeanMetaDataImpl.java:788) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.metadata.aggregated.BeanMetaDataImpl$BeanMetaDataBuilder.build(BeanMetaDataImpl.java:648) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.metadata.BeanMetaDataManager.createBeanMetaData(BeanMetaDataManager.java:204) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.metadata.BeanMetaDataManager.getBeanMetaData(BeanMetaDataManager.java:166) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.engine.ValueContext.getLocalExecutionContext(ValueContext.java:78) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateReturnValueInContext(ValidatorImpl.java:1060) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateReturnValue(ValidatorImpl.java:306) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.hibernate.validator.internal.engine.ValidatorImpl.validateReturnValue(ValidatorImpl.java:257) ~[hibernate-validator-6.0.18.Final.jar:6.0.18.Final]
at org.springframework.validation.beanvalidation.MethodValidationInterceptor.invoke(MethodValidationInterceptor.java:122) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) ~[spring-aop-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689) ~[spring-aop-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at com.example.demo.TestController$$EnhancerBySpringCGLIB$$ae3498ec.testPost(<generated>) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.springframework.web.reactive.result.method.InvocableHandlerMethod.lambda$invoke$0(InvocableHandlerMethod.java:147) ~[spring-webflux-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:118) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1630) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.MonoZip$ZipCoordinator.signal(MonoZip.java:247) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.MonoZip$ZipInner.onNext(MonoZip.java:329) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onNext(MonoPeekTerminal.java:173) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onNext(FluxDefaultIfEmpty.java:92) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:192) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:73) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1630) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:144) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxContextStart$ContextStartSubscriber.onNext(FluxContextStart.java:103) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxContextStart$ContextStartSubscriber.onNext(FluxContextStart.java:103) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onNext(FluxMapFuseable.java:287) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableConditionalSubscriber.onNext(FluxFilterFuseable.java:330) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1630) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.MonoCollect$CollectSubscriber.onComplete(MonoCollect.java:145) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:136) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxPeek$PeekSubscriber.onComplete(FluxPeek.java:252) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:136) ~[reactor-core-3.3.1.RELEASE.jar:3.3.1.RELEASE]
at reactor.netty.channel.FluxReceive.terminateReceiver(FluxReceive.java:419) ~[reactor-netty-0.9.2.RELEASE.jar:0.9.2.RELEASE]
at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:209) ~[reactor-netty-0.9.2.RELEASE.jar:0.9.2.RELEASE]
at reactor.netty.channel.FluxReceive.onInboundComplete(FluxReceive.java:367) ~[reactor-netty-0.9.2.RELEASE.jar:0.9.2.RELEASE]
at reactor.netty.channel.ChannelOperations.onInboundComplete(ChannelOperations.java:363) ~[reactor-netty-0.9.2.RELEASE.jar:0.9.2.RELEASE]
at reactor.netty.http.server.HttpServerOperations.onInboundNext(HttpServerOperations.java:461) ~[reactor-netty-0.9.2.RELEASE.jar:0.9.2.RELEASE]
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:89) ~[reactor-netty-0.9.2.RELEASE.jar:0.9.2.RELEASE]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at reactor.netty.http.server.HttpTrafficHandler.channelRead(HttpTrafficHandler.java:211) ~[reactor-netty-0.9.2.RELEASE.jar:0.9.2.RELEASE]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:326) ~[netty-codec-4.1.43.Final.jar:4.1.43.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:300) ~[netty-codec-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1422) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:931) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:700) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:635) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:552) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:514) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1050) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
Is there a way to unblock somehow this validation?
EDIT:
Seems like hibernate bean validation is blocking. One of the solution which I've found it's creating custom spring Validator. In my case it'd be something like that:
#Component
class TestEntryValidator: Validator {
override fun validate(target: Any, errors: Errors) {
ValidationUtils.rejectIfEmptyOrWhitespace(
errors, "data", "field.required")
}
override fun supports(clazz: Class<*>): Boolean {
return TestEntry::class.javaObjectType.isAssignableFrom(clazz)
}
}
It usage could look like that:
#RestController
#RequestMapping("/v1/test")
class TestController(val testSpringValidator: TestEntryValidator) {
#PostMapping("/{type}", consumes = [MediaType.APPLICATION_JSON_VALUE])
fun testPost(#PathVariable type: String, #RequestBody entry: TestEntry): Mono<TestEntry> {
return Mono.fromCallable {
val errors = BeanPropertyBindingResult(
entry,
TestEntry::class.java.name
)
testSpringValidator.validate(entry, errors)
if (errors.allErrors.isEmpty()) {
TestEntry("${entry.data} - $type")
} else {
throw ResponseStatusException(
HttpStatus.BAD_REQUEST,
errors.allErrors.toString()
)
}
}
}
}
data class TestEntry(
val data: String?
)
Unfortunately that forces you to add some additional boilerplate code but I haven't found anything better for now.

I was experimenting the same behavior in my Spring Boot application. The good news is that it is very easy to solve.
When you use validation annotations, when a field fail the constraint, the message to notice that is loaded from file. That is blocking!
So, the only you have to do is to provide a message to show, instead of read the default value from file.
For example, if you want to restrict a String field with not blank values,
use this
#NotBlank(message = "Field must not be blank")
private String mandatoryField;
istead of this
#NotBlank
private String mandatoryField;
That's all!

Spring Security Oauth2 : invalid redirect url

I am running a spring boot application behind an Apache as a Reverse Proxy.
I'am using spring security oauth2, and I have faced this stack:
org.springframework.security.oauth2.core.OAuth2AuthenticationException: [invalid_redirect_uri_parameter]
at org.springframework.security.oauth2.client.authentication.OAuth2LoginReactiveAuthenticationManager.lambda$null$1(OAuth2LoginReactiveAuthenticationManager.java:93) ~[spring-security-oauth2-client-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at reactor.core.publisher.Mono.lambda$onErrorMap$23(Mono.java:3062) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.lambda$onErrorResume$25(Mono.java:3152) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:88) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators.error(Operators.java:181) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:48) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMap.subscribe(MonoMap.java:55) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:442) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:212) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:114) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:144) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2071) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMap.subscribe(MonoMap.java:55) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:113) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:213) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoProcessor.onNext(MonoProcessor.java:389) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:192) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:422) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:212) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeek.subscribe(MonoPeek.java:71) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoProcessor.add(MonoProcessor.java:531) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoProcessor.subscribe(MonoProcessor.java:444) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMap.subscribe(MonoMap.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoHandle.subscribe(MonoHandle.java:43) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:113) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2071) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:185) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:82) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFilterFuseable.subscribe(MonoFilterFuseable.java:47) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:75) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:174) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilter$FilterSubscriber.onComplete(FluxFilter.java:160) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:78) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2073) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:1879) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:1753) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:75) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext$NextSubscriber.onComplete(MonoNext.java:96) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilter$FilterSubscriber.onComplete(FluxFilter.java:160) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:825) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:591) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFlatMap$FlatMapMain.drain(FluxFlatMap.java:571) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFlatMap$FlatMapMain.onComplete(FluxFlatMap.java:457) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:265) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:201) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFlatMap$FlatMapMain.onSubscribe(FluxFlatMap.java:366) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFlatMap.subscribe(FluxFlatMap.java:97) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilter.subscribe(FluxFilter.java:53) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFilter.subscribe(MonoFilter.java:46) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:172) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:75) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:174) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onComplete(FluxMapFuseable.java:144) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onComplete(FluxMapFuseable.java:144) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onComplete(FluxMapFuseable.java:144) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onComplete(FluxFilterFuseable.java:166) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2073) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:185) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:82) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFilterFuseable.subscribe(MonoFilterFuseable.java:47) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSubscriberContext.subscribe(MonoSubscriberContext.java:47) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSubscriberContext.subscribe(MonoSubscriberContext.java:47) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1515) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onComplete(MonoCollectList.java:121) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.fastPath(FluxIterable.java:333) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:198) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onSubscribe(MonoCollectList.java:72) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoCollectList.subscribe(MonoCollectList.java:40) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.drain(FluxFilterWhen.java:295) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.onNext(FluxFilterWhen.java:134) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:243) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:201) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.onSubscribe(FluxFilterWhen.java:194) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:139) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:63) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.FluxFilterWhen.subscribe(FluxFilterWhen.java:69) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoPeekTerminal.subscribe(MonoPeekTerminal.java:61) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3858) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
After debugging I found that spring is rendering the a wrong redirect_uri in ServerOAuth2AuthorizationCodeAuthenticationTokenConverte:
So instead of returning :
http://example.com/login/oauth2/code/xxx // my domain name
I got :
http://localhost:8080/login/oauth2/code/xxx // the local host of the application
//org.springframework.security.oauth2.client.web.server.ServerOAuth2AuthorizationCodeAuthenticationTokenConverter
private static OAuth2AuthorizationResponse convertResponse(ServerWebExchange exchange) {
MultiValueMap<String, String> queryParams = exchange.getRequest()
.getQueryParams();
String redirectUri = UriComponentsBuilder.fromUri(exchange.getRequest().getURI())
.query(null)
.build()
.toUriString();
//redirectUri is htpp://localhost:8080/xxx !!
return OAuth2AuthorizationResponseUtils
.convert(queryParams, redirectUri);
}
I have also set
server:
use-forward-headers: true
but nothing has changed.

If you have spring-security-oauth2-clienton your classpath you can modify the redirect uri with the property
spring.security.oauth2.client.registration.<your Client>.redirect-uri-template=https://my-redirect-uri.com
Source: https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-security.html

#WebFluxTest with Apache Freemarker fails

I am using Spring Boot 2.0 with Spring WebFlux and Apache Freemarker,
I have controller like following:
#Controller
public class ArticleController {
#GetMapping("/new")
public String newArticle() {
return "article/new";
}
}
It works fine when the application is started and /new endpoint is hit with a browser. But the following #WebFluxTest fails.
#RunWith(SpringRunner.class)
#WebFluxTest(ArticleController.class)
public class ArticleControllerTest {
#Autowired
private WebTestClient webTestClient;
#Test
public void getNew() {
webTestClient.get().uri("/new").accept(MediaType.TEXT_HTML).exchange().expectStatus().isOk();
}
}
With the following exception.
java.lang.IllegalStateException: Could not resolve view with name 'article/new'.
at org.springframework.web.reactive.result.view.ViewResolutionResultHandler.lambda$resolveViews$3(ViewResolutionResultHandler.java:277) ~[spring-webflux-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:107) [reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1069) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoCollectList$MonoBufferAllSubscriber.onComplete(MonoCollectList.java:117) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:349) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onComplete(FluxConcatMap.java:265) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators.complete(Operators.java:125) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:111) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:61) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:121) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoCollectList.subscribe(MonoCollectList.java:59) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:1626) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:1440) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:1314) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1069) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:73) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onNext(FluxPeekFuseable.java:198) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onNext(FluxPeekFuseable.java:198) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1069) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenAcceptInner.onNext(MonoIgnoreThen.java:290) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:1626) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenAcceptInner.onSubscribe(MonoIgnoreThen.java:279) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:161) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:53) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:148) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:74) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoPeekFuseable.subscribe(MonoPeekFuseable.java:74) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:67) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:76) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.innerNext(FluxConcatMap.java:271) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapInner.onNext(FluxConcatMap.java:803) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:115) [reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:1626) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:156) [reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:1440) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:1314) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90) [reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:418) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:210) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:128) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:61) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:121) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:40) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoSwitchIfEmpty.subscribe(MonoSwitchIfEmpty.java:44) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoOnErrorResume.subscribe(MonoOnErrorResume.java:44) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:167) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:56) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribeWith(Mono.java:3188) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3074) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3041) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3013) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at org.springframework.test.web.reactive.server.HttpHandlerConnector.lambda$connect$1(HttpHandlerConnector.java:89) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.mock.http.client.reactive.MockClientHttpRequest.lambda$null$2(MockClientHttpRequest.java:125) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatIterable$ConcatIterableSubscriber.onComplete(FluxConcatIterable.java:141) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.FluxConcatIterable.subscribe(FluxConcatIterable.java:60) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.MonoSourceFlux.subscribe(MonoSourceFlux.java:47) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3080) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribeWith(Mono.java:3188) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3074) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3041) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at reactor.core.publisher.Mono.subscribe(Mono.java:3013) ~[reactor-core-3.1.5.RELEASE.jar:3.1.5.RELEASE]
at org.springframework.test.web.reactive.server.HttpHandlerConnector.connect(HttpHandlerConnector.java:100) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.web.reactive.server.WiretapConnector.connect(WiretapConnector.java:73) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.reactive.function.client.ExchangeFunctions$DefaultExchangeFunction.exchange(ExchangeFunctions.java:79) ~[spring-webflux-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.web.reactive.function.client.DefaultWebClient$DefaultRequestBodyUriSpec.exchange(DefaultWebClient.java:325) ~[spring-webflux-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.web.reactive.server.DefaultWebTestClient$DefaultRequestBodyUriSpec.exchange(DefaultWebTestClient.java:282) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at com.packtpub.springboot2blog.controller.ArticleControllerTest.getNewArticlePage_ShouldReturnNewArticlePage(ArticleControllerTest.java:30) ~[test-classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) ~[junit-4.12.jar:4.12]
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) ~[junit-4.12.jar:4.12]
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) ~[junit-4.12.jar:4.12]
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) ~[junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) ~[junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) ~[junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) ~[junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) ~[spring-test-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.junit.runner.JUnitCore.run(JUnitCore.java:137) ~[junit-4.12.jar:4.12]
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) ~[junit-rt.jar:na]
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) ~[junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) ~[junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) ~[junit-rt.jar:na]
Any hints on how to test this would be appreciated.

I had the same problem, but using Thymeleaf. I forgot to add the following annotation to my test class:
#Import({ThymeleafAutoConfiguration.class})
This will configure a view resolver. On Spring Boot 2.0.5, there is a similar class for FreeMarker, so you can try adding it to your test class:
#Import({FreeMarkerAutoConfiguration.class})

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