我在尝试在球衣中启用Hk2 Events时遇到问题。

ResourceConfig:

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";
    }
}


我得到一个错误:

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]

最佳答案

TopicDistributionModuleAbstractBinder,据我了解,应该将其注册为实例,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。在发布事件/消息时,只需确保有一个“实时”订户即可

10-08 09:21