Jersey service not found with recent version - maven

I wanted to test a simple "Hello World" jersey service using Maven and Tomcat (7.0) in Eclipse. Maven downloaded the most recent version 1.17, but everytime I try to access the page I retreive a 404. However after changing back to version 1.9 it works as expected. Did anything change between those version or am I missing something?
What I do is calling localhost:8080/rngservice/rest/hello which gives a 404 error when I'm using jersey versions beyond 9. Using version 9 however works as intended and returns the HTML page.
Any suggestions?
My code:
package service.test;
import javax.ws.rs.*;
#Path("/hello")
public class RNGResource {
#GET
#Produces(MediaType.TEXT_HTML)
public String getItHTML() {
return "<htm> <title> " + "Got it!" + "</title> </html>";
}
}
I don't use a web.xml but a PackagesResourceConfig for the servlet configuration
package service.test;
import javax.ws.rs.ApplicationPath;
import com.sun.jersey.api.core.PackagesResourceConfig;
#ApplicationPath("/rest/*")
public class RNGServiceApplication extends PackagesResourceConfig {
public RNGServiceApplication() {
super("service.test");
}
}
The Maven .pom
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>service</groupId>
<artifactId>rngservice</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>rngservice</name>
<build>
<!-- ... -->
</build>
<dependencies>
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>jsr311-api</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.17</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.17</version>
</dependency>
</dependencies>
</project>

Related

Springboot REST API returning 404 when deployed in Jboss EAP.7.1.0

I have created a simple Springboot REST api, which is working fine when deployed in Tomacat container but returning 404 message when deployed in Jboss EAP 7.1.0. Need help to resolve this problem.
Below are the classes i wrote along with pom.xml and application.properties
SpringRestApiApplication.java
package com.test.spring;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SpringRestApiApplication{
public static void main(String[] args) {
SpringApplication.run(SpringRestApiApplication.class, args);
}
}
RestExample.java
package com.test.spring.web.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
#RequestMapping(value = "/test")
public class RestExample {
#GetMapping(value = "/hello")
public String HelloWorldAPI() {
return "Hello World!";
}
}
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>1.5.10.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>SpringRestAPI</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>SpringRestAPI</name>
<description>Rest API Test Example</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
<exclusion>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>rest-api</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties
server.servlet-path=/*
You are using 7.1.0 right. Remove this and try server.servlet-path=/*

Spring boot controller issue, getting whitelabel page error ,what might be wrong here?

I have made projects before on spring and never got any issue like this before ,i just can't seem to figure out what is wrong here, all dependencies are correctly imported .
Here is how my vaultengine.java looks like :
VaultEngine.java :
package com.example.VaultEngine;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#SpringBootApplication
#Controller
public class VaultEngineApplication {
public static void main(String[] args) {
SpringApplication.run(VaultEngineApplication.class, args);
}
#GetMapping("/h")
public String greetingForm() {
return "index.html";
}
}
I am using a custom port cause i have 8080 in use somewhere already.
application.properties:
server.port=8989
All dependencies are properly loaded.
pom.xml file :
<?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>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<version>2.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.19</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<version>1</version>
</configuration>
</plugin>
</plugins>
</build>
</project>
You are using spring-boot-starter-thymeleaf, so
#GetMapping("/h")
public String greetingForm() {
return "index";
}
and put index.html to src/main/resources/templates/.
refs:
https://spring.io/guides/gs/serving-web-content/
https://docs.spring.io/spring-boot/docs/2.2.6.RELEASE/reference/htmlsingle/#boot-features-spring-mvc-template-engines
https://docs.spring.io/spring/docs/5.2.7.RELEASE/spring-framework-reference/web.html#mvc-controller
Use #RestController instead of #Controller
#SpringBootApplication
#RestController
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
#GetMapping("/h")
public String greetingForm() {
return "index.html";
}
}

spring boot #repository bean from Maven dependency not found

I'm working on multiple Spring Boot projects using spring-data-mongoDB (w/o JPA). One that contains the common (udc-common) components, repositories and services and others (eg udc-gateway) that use these components. the udc-common library is declared as a maven dependency in the other projects.
(you'll find enclosed the maven detailed configurations at the end of this post)
Environment structure
udc_common project
udc_common.models
udc_common.repositories
udc_common.services
udc_common.interfaces
udc_gateway project
udc_gateway.controllers
udc_gateway ....
gatewayApplication.java
gateway pom.xml
<dependency>
<groupId>org.open_si</groupId>
<artifactId>udc-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
in the udc-gateway project I have a rest controller thats refers to a udc-comm SampleService. When running it I face an error
Parameter 0 of constructor in org.open_si.udc_common.services.SampleService required a bean of type 'org.open_si.udc_common.repositories.SampleRepository' that could not be found.
the coding organization is :
the controller (SamplesController) belongs to the gateway project
the service (SampleService) and its repository (SampleRepository) belong to the common project being declared as maven dependency in the gateway project
Obviously the SampleService injection does work but its SampleRepository dependency doesn't. As the common package is an external one I've set the #componentscan accordingly in the gateway app main class
tryed
#ComponentScan("org.open_si.udc_common")
and
#ComponentScan({
"org.open_si.udc_common.repositories",
"org.open_si.udc_common.services"
})
the SamplesController (gateway project) code excerpt related for the SampleService is
#RestController
#RequestMapping("/samples")
public class SamplesController {
#Autowired
private SampleService service;
......
the SampleService (common project) is
#Service
#EnableMongoRepositories
public class SampleService {
#Autowired
private SampleRepository sr;
void insert(BaseSampleEntity sample) {
this.sr.insert(sample);
}
public void delete(BaseSampleEntity sample) {
this.sr.delete(sample);
}
.....
or also tryed
#Service
#EnableMongoRepositories
public class SampleService {
private final SampleRepository sr;
public SampleService(SampleRepository repository) {
sr = repository;
}
void insert(BaseSampleEntity sample) {
this.sr.insert(sample);
}
public void delete(BaseSampleEntity sample) {
this.sr.delete(sample);
}
and the SampleRepository (common project) is
// #Repository (JPA only)
public interface SampleRepository extends MongoRepository<BaseSampleEntity, String> {
List<BaseSampleEntity> findByNodeUuid(String Uuid, Sort sort, Pageable pageable);
List<BaseSampleEntity> findByFieldUuid(String Uuid, Sort sort, Pageable pageable);
so the raised exception
Parameter 0 of constructor in org.open_si.udc_common.services.SampleService required a bean of type 'org.open_si.udc_common.repositories.SampleRepository' that could not be found.
leads me thinking that something is wrong in the spring boot IOC process. Any idea ?
thanks in advance for your help.
udc-common 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>2.2.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>org.open_si</groupId>
<artifactId>udc-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>UDC common</name>
<packaging>jar</packaging>
<description>Common resources for Universal Data Collector</description>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>RELEASE</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<!-- <source>1.8</source>-->
<!-- <target>1.8</target>-->
<release>11</release>
</configuration>
</plugin>
</plugins>
</build>
</project>
udc-gateway 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>2.2.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>org.open_si</groupId>
<artifactId>gateway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>Gateway</name>
<description>Gateway for UDC project</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.open_si</groupId>
<artifactId>udc-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!-- <dependency>-->
<!-- <groupId>org.springframework.boot</groupId>-->
<!-- <artifactId>spring-boot-starter-oauth2-client</artifactId>-->
<!-- </dependency>-->
<!-- <dependency>-->
<!-- <groupId>org.springframework.boot</groupId>-->
<!-- <artifactId>spring-boot-starter-oauth2-resource-server</artifactId>-->
<!-- </dependency>-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Try adding below annotation in the spring boot main application class (ie. class annotated with SpringBootApplication - GateWayApplication.java)
#EnableMongoRepositories(basePackages = "org.open_si.udc_common")
#ComponentScan("org.open_si.udc_common.services")
#EntityScan(basePackages ="org.open_si.udc_common.models")
Also, as you mentioned you don't need to annotate repository class with #Repository as this is already managed by spring data
UPDATE:
#SpringBootApplication itself has ComponentScan annoation embedded to it, so it automatically scans all the classes under all the subdirectories.
Hope you have the directory structure somewhat similar to
com.example
--controllers
-- SamplesController
--service
-- SampleService
SampleApplication (this is the class that contains #SpringBootApplication & #EnableMongoRepositories)
Mb you need to add the Spring Data dependency to Maven
As suggested by Kumar V adding
#ComponentScan("org.open_si.udc_common.services")
#EnableMongoRepositories(basePackages = {"org.open_si.udc_common.repositories"})
In the gateway.application.java did the trick.
Unfortunately due to the org.open_si.udc_common.services import, I faced a new issue :
when sending a request against the SamplesController I get an HTTP 404 error.
When removing the ComponentScan of udc-common-services (and the reference to the SampleService in the controller) everythink is ok.
Springs does make some stuff under the wood that I don't understand.

Spring Cloud Gateway not starting when deployed as WAR showing webFluxConversionService error

I'm trying to do a sample with Spring Cloud Gateway for JWT authentication and URL routing purpose.
All is running well when i run as a JAVA application or using Embedded Tomcat Container but when the same is deployed to a Tomcat server as a War, then i ge the below dependency injection error.
APPLICATION FAILED TO START
Description:
Parameter 4 of method routeDefinitionRouteLocator in org.springframework.cloud.gateway.config.GatewayAutoConfiguration required a bean of type 'org.springframework.core.convert.ConversionService' that could not be found.
The injection point has the following annotations:
- #org.springframework.beans.factory.annotation.Qualifier(value=webFluxConversionService)
Action:
Consider defining a bean of type 'org.springframework.core.convert.ConversionService' in your configuration.
I have tried adding jars related to spring web flux but the error did not go
my 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 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>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.gateway</groupId>
<artifactId>gateway</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>gateway</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.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-tomcat -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-webflux -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-web-reactive -->
</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>
<finalName>mxgateway</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin> <artifactId>maven-war-plugin</artifactId>
<configuration> <outputDirectory>E:/apache-tomcat-9.0.22/webapps</outputDirectory>
</configuration> </plugin>
</plugins>
</build>
</project>
The gateway configuration is
package com.gateway.gateway;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder;
import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder.Builder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.gateway.gateway.bean.ProgramRouteDetail;
import com.gateway.gateway.security.CustomGatewayFilter;
#SpringBootApplication
#Configuration
public class GatewayApplication extends SpringBootServletInitializer{
#Autowired
CustomGatewayFilter customGatewayFilter;
public static void main(String[] args) {
SpringApplication.run(GatewayApplication.class, args);
}
public List<ProgramRouteDetail> filterRequest(){
List<ProgramRouteDetail> programRouteDetails = new ArrayList<ProgramRouteDetail>();
for(int i =0;i<=2;i++){
ProgramRouteDetail detail = new ProgramRouteDetail();
detail.setDestUri("http://localhost:9090");
detail.setProgramId("users");
detail.setPath("/user/**");
programRouteDetails.add(detail);
}
return programRouteDetails;
}
#Override
protected SpringApplicationBuilder configure(
SpringApplicationBuilder builder) {
return builder.sources(GatewayApplication.class);
}
public RouteLocator constructRouteAndFilters(RouteLocatorBuilder builder ){
Builder routes = builder.routes();
List<ProgramRouteDetail> programRouteDetails = filterRequest();
for(ProgramRouteDetail programDetail : programRouteDetails){
routes.route(p -> p.path(programDetail.getPath()).filters(f->f.filter(customGatewayFilter)).uri(programDetail.getDestUri()));
}
return routes.build();
}
#Bean
public RouteLocator myRoutes(RouteLocatorBuilder builder) {
return constructRouteAndFilters(builder);
}
}
Spring Cloud Gateway does not support WAR deployments. It is based on Spring Webflux and Spring Boot does not support war deployments of webflux.
From the documentation:
Because Spring WebFlux does not strictly depend on the Servlet API and
applications are deployed by default on an embedded Reactor Netty
server, War deployment is not supported for WebFlux applications.

The type javax.servlet.http.HttpServletResponse cannot be resolved. It is indirectly referenced from required .class files

I am new to spring try to create application so that i can learn how its work. However when i wrote code Eclipse IDE gives
The type javax.servlet.http.HttpServletResponse cannot be resolved.It is indirectly referenced from required .class files
here is my class
package testPackage;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
import domain.serviceLayer.UserService;
import domain.userDetails.User;
#SuppressWarnings("deprecation")
public class UserLoginFormController extends SimpleFormController {
private UserService userService;
public UserLoginFormController() {
setCommandClass(User.class);
setCommandName("user");
}
public void setUserService(UserService userService) {
this.userService = userService;
}
#Override
public ModelAndView onSubmit(Object command) throws Exception {
// TODO Auto-generated method stub
User user = (User) command;
userService.add(user);
ModelAndView modelAndView = new ModelAndView("success", "user", user);
return modelAndView;
}
}
and pom.xml
<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>
<groupId>learnSimpleFormController</groupId>
<artifactId>learnSimpleFormController</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<properties>
<spring.version>3.2.3.RELEASE</spring.version>
</properties>
<dependencies>
<!-- Spring 3 dependencies -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>learnSimpleFormController</finalName>
</build>
</project>
Please what is problem and how to remove that error
your project is not referencing to servlet.jar so just add this dependency in your pom
<dependency>
<groupId>org.apache.geronimo.specs</groupId>
<artifactId>geronimo-servlet_2.5_spec</artifactId>
<version>1.2</version>
</dependency>
Your project is not referring to any Runtime environment.
You can do the folllwoing: import the jar file inside you class:
import javax.servlet.http.HttpServletResponse
add the Apache Tomcat library as follow:
Project > Properties > Java Build Path > Libraries > Add library > Server Runtime > Next > Apache Tomcat v 6.0 > Finish > Ok
I had same exception.
I am using spring-boot 1.5.3.RELEASE but my colleague is using spring-boot 1.5.4.RELEASE.
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
So when I got his code, I got this exception.
May be in my PC I had old maven jar files of spring boot and maven could not update those jar files.
Even I deleted all folders of spring-boot from .m2 folder but still generating same error
Finally I got solution by changing the version of spring boot from 1.5.4 to 1.5.3 from pom.xml.

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