Question

I have a custom context:

public class MyContext {
    public String doSomething() {...}
}

I have created a context resolver:

@Provider
public class MyContextResolver implements ContextResolver<MyContext> {

     public MyContext getContext(Class<?> type) {
         return new MyContext();
     }
}

Now in the resource I try to inject it:

@Path("/")
public class MyResource {

    @Context MyContext context;

}

And I get the following error:

SEVERE: Missing dependency for field: com.something.MyContext com.something.MyResource.context

The same code works fine with Apache Wink 1.1.3, but fails with Jersey 1.10.

Any ideas will be appreciated.

Answer 1

JAX-RS specification does not mandate the behavior provided by Apache
Wink. IOW, the feature you are trying to use that works on Apache Wink
makes your code non-portable.

To produce 100% JAX-RS portable code, you need to inject
javax.ws.rs.ext.Providers instance and then use:

ContextResolver<MyContext> r = Providers.getContextResolver(MyContext.class, null);
MyContext ctx = r.getContext(MyContext.class);

to retrieve your MyContext instance.

In Jersey, you can also directly inject ContextResolver,
which saves you one line of code from the above, but note that this
strategy is also not 100% portable.