Question

我正在尝试实现一个场景，当我需要通知特定客户端时，当另一个客户端B向服务器发出GET请求时说出A. 我正在寻找Atmosphere服务器推送。我已成功将B连接到服务器，并且如果通过Atmosphere发送消息则能够推送他。但是这个特殊情况我被卡住了。任何人都可以提出可行的解决方案吗？还有一些方向指示？

import org.atmosphere.annotation.Broadcast;
import org.atmosphere.annotation.Suspend;
import org.atmosphere.config.service.AtmosphereService;
import org.atmosphere.cpr.AtmosphereResourceEvent;
import org.atmosphere.cpr.AtmosphereResourceEventListenerAdapter;
import org.atmosphere.jersey.JerseyBroadcaster;

import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;

/**
 * Simple chat resource demonstrating the power of Atmosphere. This resource supports transport like WebSocket, Streaming, JSONP and Long-Polling.
 *
 * @author Jeanfrancois Arcand
 */
@Path("/")
@AtmosphereService (broadcaster = JerseyBroadcaster.class)
public class ChatResource {

    /**
     * Suspend the response without writing anything back to the client.
     *
     * @return a white space
     */
    @Suspend(contentType = "application/json", listeners = {OnDisconnect.class})
    @GET
    public String suspend() {

        return "";
    }

    /**
     * Broadcast the received message object to all suspended response. Do not write back the message to the calling connection.
     *
     * @param message a {@link Message}
     * @return a {@link Response}
     */
    @Broadcast(writeEntity = false)
    @POST
    @Produces("application/json")
    public Response broadcast(Message message) {
        return new Response(message.author, message.message);
    }

    public static final class OnDisconnect extends AtmosphereResourceEventListenerAdapter {
        /**
         * {@inheritDoc}
         */
        @Override
        public void onDisconnect(AtmosphereResourceEvent event) {
            System.out.println(event);
        }
    }

}

Answer 1

不使用@Broadcast，而是直接使用BroadcasterFactory使用Broadcaster，并调用broadcaster.broadcast（message，ClientB）。看看atmosphere-sample's，有很多例子可以做到这一点。

- Jeanfrancois

Answer 2

使用BroadcasterFactory直接使用broadcaster并调用broadcaster.broadcast（message，ClientB）

服务器端从其他客户端获取GET请求时推送到客户端

2 个答案: