Jersey 2 + Spring: @Autowired is null

Question

I'm trying to use Jersey 2 with Spring with help of this article: How to use Jersey 2 with Spring IoC container

But autowired bean is null when the application tries to call it after the client request. In applicationContext.xml i have only component-scan setting.

In pom.xml: 
<spring.version>4.1.0.RELEASE</spring.version>
<jersey.version>2.12</jersey.version>

@Component
@RequestScoped
@Path("/user")
public class UserREST {
    @Autowired
    private UserFacade userFacade;

    @POST
    @Path("/auth")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces({MediaType.APPLICATION_JSON})
    public AuthResponse authorize(User user){
        return userFacade.authorize(user);  // Null is caught here
    }
}

-

@Component
public class UserFacade {

    public AuthResponse authorize(com.pushock.model.User user){
        AuthResponse response = new AuthResponse();
        response.setAuthorized(true);
        return response;
    }
}

What am I doing wrong?

UPD: Here is my pom.xml https://bitbucket.org/spukhov/memo-ws/src/00724e00e3aa786f62fd0e43fe0606de6ae569df/pom.xml?at=master

are you scanning the correct packages with `component-scan`? — yate, Sep 17 '14 at 19:56
@yate component-scan is set correctly to the root package (always worked for me) — Reynard, Sep 17 '14 at 20:10
@luiggi This is not a duplicate. Please prove or leave a feedback. — Reynard, Sep 17 '14 at 20:23
Post the configurations you've done and other relevant info to replicate this problem. — Luiggi Mendoza, Sep 17 '14 at 20:27
@chrylis that's for client, it shouldn't affect the server side operations. — Luiggi Mendoza, Sep 17 '14 at 20:53
Sorry for my previous comment (I removed it). Actual pom file is added in the question body in UPD section. — Reynard, Sep 17 '14 at 21:05
I don't know why it was marked as an 'off-topic'. But it can be considered as 'unclear what you're asking', because question does not have good background of the problem. — Jama A., Sep 17 '14 at 21:29
@JamaJurayevich Because "off-topic" includes not enough information to resolve the issue in the question, and it is (was) missing control and integration code. — chrylis -cautiouslyoptimistic-, Sep 18 '14 at 00:27

score 11 · Accepted Answer · answered Sep 17 '14 at 21:24

Spring managed beans cannot be injected to JAX-RS classes directly, you need to use Jersey extension for integrating it with Spring.

There is a maven dependency which you don't have in your pom.xml

<dependency>
    <groupId>org.glassfish.jersey.ext</groupId>
    <artifactId>jersey-spring3</artifactId>
    <version>2.12</version>
</dependency>

Refer to Jersey Documentation: Chapter 22. Spring DI and at the bottom of the page, there is a link to sample spring integration Github project.

Another problem I've seen in your project is you didn't show how spring context should be loaded and configured. You need to configure it in your web.xml

   <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

score 1 · Answer 2 · answered Jun 17 '15 at 10:08

1

and in case you are using java based approach for spring configuration, you also need to :

servletContext.setInitParameter("contextConfigLocation", "<NONE>");

in your WebApplicationInitializer implementation

answered Jun 17 '15 at 10:08

Nisarg Panchal

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Jersey 2 + Spring: @Autowired is null

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