Spring Integration http inbound gateway not working when FeignClient instance wired to any Config Class which annotated #Configuration - spring

Question

It's a Spring Cloud microservice web app built by SpringBoot. We are using Kafka 0.10.1, according to the compatibility matrix, this pom.xml file describes the dependencies:
<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 http://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>1.5.10.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.yonyou.occ</groupId>
<artifactId>davcointegration</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>myintegration</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Edgware.SR2</spring-cloud.version>
<oracle.version>11.1.0.7.0</oracle.version>
<iuap.modules.version>3.1.0-RELEASE</iuap.modules.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-integration</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-core</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-kafka</artifactId>
<version>2.1.2.RELEASE</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-http</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.github.java-json-tools</groupId>
<artifactId>json-schema-validator</artifactId>
<version>2.2.10</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-kafka</artifactId>
</dependency>
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-starter-client</artifactId>
<version>1.5.6</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
<exclusions>
<exclusion>
<artifactId>jettison</artifactId>
<groupId>org.codehaus.jettison</groupId>
</exclusion>
<exclusion>
<artifactId>antlr-runtime</artifactId>
<groupId>org.antlr</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>${oracle.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.18</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.5.10.RELEASE</version>
<scope>import</scope>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
</project>
The code works:
.from(Http.inboundGateway("goods/{operation}")
.requestMapping(m -> m.methods(HttpMethod.POST))
.requestPayloadType(String.class)
.headerExpression(MessageHeaderName.OPERATION, "#pathVariables.operation"))
//......
It still works when #EnableFeignClients add to Spring Boot Application entry.
But once the #FeignClient instance wired to(by #Autowired) any config Class(#Configuration), it's not working.
I have checked http://myproject/mappings (The request mappings info provided by Spring boot), mappings "/goods/**" disappeared.
It's a simple project that explains this problem: https://github.com/Princelo/demoForSiAndFeignProblem/blob/master/src/main/java/com/example/demo/config/AnyConfig.java

Answer 1

Please, see https://github.com/spring-projects/spring-integration/issues/2752 for more info and for tracking the fix.
Meanwhile as a workaround I suggest to have a #Lazy whenever you try to inject Feign client interfaces.
The problem that FeignClientFactoryBean initiate a new child ApplicationContext for each Feign cleint and calls a ContextRefreshedEvent for them too early. The IntegrationRequestMappingHandlerMapping doesn't check for the context of the event and marks itself initialized wrong way, missing the scan for appropriate HTTP components.