泽西岛2.*.如何替换Jersey 1的InjectableProvider和AbstractHttpContextInjectable

Question

我想创建一个类,其对象可以使用@Context注释(或者更好的是自定义注释,用于需要将参数传递给注释的情况)注入资源方法.在泽西岛1.*我会用InjectableProvider(在我的情况下AbstractHttpContextInjectable).我想要实现的是类似@Auth[ 1 ]的dropwizard(使用Jersey 1.7).

据我所知,泽西的注射能力被HK2取代,我找不到任何我所描述的例子.

编辑:请参阅此问题,了解我在尝试按照Michal的指南时遇到的其他问题.

Answer 1

您需要从HK2 实现InjectionResolver <T>接口.看一下Jersey工作区中现有的实现:

• ContextInjectionResolver处理@Context
• ParamInjectionResolver处理@PathParam,, @QueryParam......(通过它的子类)
• AutowiredInjectResolver处理@Autowired

一旦你有了这个,你需要从HK2 扩展AbstractBinder并绑定你的InjectionResolver通过它的#configure()方法:

public class MyResolverBinder extends AbstractBinder {

    @Override
    protected void configure() {
        bind(MyInjectionResolver.class)
                .to(new TypeLiteral<InjectionResolver<MyAnnotation>>() {})
                .in(Singleton.class);
    }
}

...并在您的应用程序类中(或通过功能)注册此binder的实例:

Feature:

public class MyFeature implements Feature {

    @Override
    public boolean configure(final FeatureContext context) {
        context.register(new MyResolverBinder());
        return true;
    }
}

注册MyFeature到Application:

public class JaxRsApplication extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        final HashSet<Class<?>> classes = new HashSet<Class<?>>();
        classes.add(MyFeature.class);
        // Register other providers or resources.
        return classes;
    }
}

注册MyResolverBinder或Feature在ResourceConfig

new ResourceConfig()
        // Register either MyFeature
        .register(MyFeature.class)
        // or MyResolverBinder
        .register(new MyResolverBinder())
        // Register other providers or resources
        .packages("my.package");