websocket集成时报错

报如下tomcat错误，是因为线程没同步吗？我全部用的异步方法给客户端发送消息，wsserver没有使用同步的方法

java.lang.IllegalStateException: The remote endpoint was in state [TEXT_FULL_WRITING] which is an invalid state for called method
	at org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.checkState(WsRemoteEndpointImplBase.java:1206)
	at org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.textStart(WsRemoteEndpointImplBase.java:1169)
	at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendStringByCompletion(WsRemoteEndpointImplBase.java:213)
	at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendStringByFuture(WsRemoteEndpointImplBase.java:201)
	at org.apache.tomcat.websocket.WsRemoteEndpointAsync.sendText(WsRemoteEndpointAsync.java:53)
	at org.nutz.plugins.mvc.websocket.AbstractWsEndpoint.sendJson(AbstractWsEndpoint.java:215)
	at com.game.brag.server.MyHandler.onMessage(MyHandler.java:95)
	at com.game.brag.server.NutzWsServer.onClose(NutzWsServer.java:59)
	at org.apache.tomcat.websocket.WsSession.fireEndpointOnClose(WsSession.java:515)
	at org.apache.tomcat.websocket.WsSession.onClose(WsSession.java:496)
	at org.apache.tomcat.websocket.WsFrameBase.processDataControl(WsFrameBase.java:348)
	at org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:290)
	at org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:131)
	at org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:67)
	at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler$WsReadListener.onDataAvailable(WsHttpUpgradeHandler.java:204)
	at org.apache.coyote.http11.upgrade.AbstractServletInputStream.onDataAvailable(AbstractServletInputStream.java:203)
	at org.apache.coyote.http11.upgrade.AbstractProcessor.upgradeDispatch(AbstractProcessor.java:93)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:635)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2549)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2538)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:744)

wendal

1楼•2555天前

onClose的时候不能发东西了

小小小郑(wx_cqn8gvcrve82l3hlql5s) 2楼•2555天前

嗯因为需要在用户离开时让吧该用户移除房间，我确实在onclose的时候直接向handler发送离开房间消息，请问还有别的方式能实现这个功能吗，我也觉得这样写有些问题

	@Override
    public void onClose(Session session, CloseReason closeReason) { 
		synchronized(session){
			String message = "{action:\"left\",room:\""+room+"\",openId:\""+openId+"\"}";
			handler.onMessage(message);
		}
		//人数－1
        subOnlineCount();  
        System.out.println("有一链接关闭!当前在线人数为" + getOnlineCount()); 
        //调用父类的onclose
  		super.onClose(session, closeReason);
    }

小小小郑(wx_cqn8gvcrve82l3hlql5s) 3楼•2555天前

说错了不是移出房间，是通知其他用户该用户已经离开。要怎么做到？

wendal

4楼•2555天前

把session id也传给handler, 在发送给房间的时候,跳过该id

小小小郑(wx_cqn8gvcrve82l3hlql5s) 5楼•2555天前

好的感谢我试试

小小小郑(wx_cqn8gvcrve82l3hlql5s) 6楼•2555天前

1、客户端每10S主动ping一次服务器
2、服务器发送当前还在线的有所用户
3、客户端接受新消息，判断目前的所有用户是否都存在于新消息中，如果不存在则移出该房间。
请问大神，我这样设计会不会有什么问题，每次10秒ping一次会不会对服务器负担太大？

小小小郑(wx_cqn8gvcrve82l3hlql5s) 7楼•2555天前

还是说设计成每次客户端发消息来都给他返回所有在线的用户数据

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