java - 如何在 jersey 2.15 中启用 HK2 TopicDistributionService？

Question

我在尝试启用 Hk2 Events 时遇到问题穿着 Jersey 。

资源配置:

import org.glassfish.hk2.utilities.TopicDistributionModule;

public class Application extends ResourceConfig {
    public Application() throws IOException {
        super(Application.class);
        register(TopicDistributionModule.class);
    }
}

资源:

@Path("/")
public class MainResource {
    @Inject
    private Topic<MyClass> myClassTopic;

    @GET
    @Produces(MediaType.TEXT_HTML)
    public String index() {
        return "index";
    }
}

我收到一个错误:

java.lang.IllegalStateException: There is no implementation of the TopicDistributionService to distribute the message
  at org.jvnet.hk2.internal.TopicImpl.publish(TopicImpl.java:79) ~[hk2-locator-2.3.0.jar:?]
  at ... MainResource.index(MainResource.java:21) ~[classes/:?]
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20]

Answer 1

TopicDistributionModule是 AbstractBinder ，根据我的理解，它应该注册为实例，而不是按类注册。这个

register(new TopicDistributionModule());

应该消除异常，因为它注册了默认的TopicDistributionService。从那里开始，只需确保您在发布事件/消息时拥有“实时”订阅者即可