用guice覆盖球衣资源

Question

我正在寻找一种方法来覆盖GuiceServletContextListener中与guice绑定的jersey资源。我的代码，我正在努力工作:

//Define Jersey resource interface
@Path("/books/{key}")
public interface BookDocument {

    public BookDAO getDao();

    public void setDao(BookDAO dao);
}

//Define default implementation
public class BookImpl implements Book {

    @Override
    public BookDAO getDao() {
        return dao;
    }

    @Inject
    @Override
    public void setDao(BookDAO dao) {
        this.dao = dao;
    }
}

//User wants to inject his implementation, so he define it
public class BookUserImpl implements Book {

    @Override
    public BookDAO getDao() {
        return dao;
    }

    @Inject
    @Override
    public void setDao(BookDAO dao) {
        this.dao = dao;
    }
}

//Inject default implementation of resource
public class ApplicationResourcesModule extends AbstractModule
{
    @Override
    protected void configure()
    {
        bind(Book).to(BookImpl);
    }
}

//But user wants to inject his implementation, so he bind it in users AbstractModule
public class ApplicationResourcesModuleUser extends AbstractModule
{
    @Override
    protected void configure()
    {
        bind(Book).to(BookUserImpl);
    }
}

//Bind all resources
public class JerseyGuiceConfig extends GuiceServletContextListener
{
    @Override
    protected Injector getInjector()
    {
        //Override default binding by user bindings.
        return Guice.createInjector(Modules.override(new ApplicationResourcesModule()).with(new ApplicationResourcesModuleUser()), new JerseyServletModule());
    }
}

但不幸的是，这不起作用，虽然我不能像接口一样将jersey资源绑定到实现，但只有bind（BookImpl.class）work。但是这样的绑定是不可能覆盖的。如果我试图用bind（BookUserImpl.class）覆盖bind（BookImpl.class），我会收到一个错误冲突的URI模板。URI模板 /books/{key}用于根资源类。而@Path应该是唯一的。那么我的用例有什么解决方案吗？