How to use Jersey 2 with Spring IoC container

问题

What is the best way to enable injection of spring beans into Jersey 2? Jersey seems to not support this natively.

What is needed to wire the 2 frameworks together? In pom.xml and web.xml?

回答1:

You should be able to annotate jersey components and then use annotations to inject the beans.

@Service //(or @Component)
public class MyJerseyService {

    @Autowired
    private MyObj mySpringBean

}

回答2:

Jersey 2.3 has now spring support:

https://jersey.github.io/documentation/latest/user-guide.html#spring

As stated in the documentation

The Spring extension module configuration is based on annotations

So you have to tell spring to scan your classpath, for example:

<context:component-scan base-package="my.package.to.resources">

and annotate your resource class with a spring annotation (I advise to use @Component, and then specify the jersey resource scopes @Singleton/@PerLookup/@RequestScoped )

@Component
@Singleton
@Path("example")
public class Example {

    //Spring beans can't be injected directly into JAX-RS classes by using Spring XML configuration
    @Autowired
    private MyOtherBean myOtherBean;

    @GET @Path("hello")
    public String hello() {
        return myOtherBean.hello();
    }
}

回答3:

As of June 2013, Jersey 2.0 has no official Spring support. There are two options:

Use third party code from here https://github.com/marko-asplund/jersey/tree/master/ext/jersey-spring
Wait until HK2 spring bridge becomes stable and documented https://java.net/jira/browse/HK2-40