在Jersey 2中将主体注入资源方法

时间:2013-12-14 23:02:18

标签: java annotations jersey inject hk2

我正在使用Jersey 2开发REST API,目前我正尝试使用类似于Dropwizard中的@Auth的注释来合并基本身份验证。与

@Path("hello")
public class HelloResource {
    @GET
    @Produces("application/json")
    public String hello(@Auth final Principal principal) {
        return principal.getUsername();
    }
}

hello资源调用应该被一些使用Authorization HTTP请求头中传递的凭据执行基本身份验证的代码拦截,并且成功将主体注入方法主体参数。

我已经开始创建一个@Auth解析器,见下文,但我看不到如何从中获取Authorization HTTP请求头?

@Singleton
public class AuthResolver {
    public static class AuthInjectionResolver extends ParamInjectionResolver<Auth> {
        public AuthInjectionResolver() {
            super(AuthValueFactoryProvider.class);
        }
    }

    @Singleton
    public static class AuthValueFactoryProvider extends AbstractValueFactoryProvider {
        @Inject
        public AuthValueFactoryProvider(final MultivaluedParameterExtractorProvider extractorProvider, final ServiceLocator injector) {
            super(extractorProvider, injector, UNKNOWN);
        }

        @Override
        protected Factory<?> createValueFactory(final Parameter parameter) {
            final Class<?> classType = parameter.getRawType();
            return classType == null || !classType.equals(Principal.class) ? null :
                   new AbstractContainerRequestValueFactory<Principal>() {
                       @Override
                       public Principal provide() {
                           // Authentication?
                       }
                   };
        }
    }

    public static class Binder extends AbstractBinder {
        @Override
        protected void configure() {
            bind(AuthValueFactoryProvider.class).to(ValueFactoryProvider.class).in(Singleton.class);
            bind(AuthInjectionResolver.class).to(
                    new TypeLiteral<InjectionResolver<Auth>>() {
                    }
            ).in(Singleton.class);
        }
    }
}

如何处理? :)

1 个答案:

答案 0 :(得分:0)

啊,在AbstractContainerRequestValueFactory<Principal>我可以添加

@Context private ResourceContext context;

然后从提供方法中提取HTTP请求及其头部。