我正在使用Java-EE WebSockets实现一个小型聊天应用程序。
有时候我需要出于各种原因关闭客户端的会话以关闭连接。
为了关闭连接,我调用了onClose
函数,在该函数中我调用了session.close()
,但之后我得到了以下错误:
java.lang.IllegalStateException: The WebSocket session has been closed and no method (apart from close()) may be called on a closed session
at org.apache.tomcat.websocket.WsSession.checkState(WsSession.java:643)
at org.apache.tomcat.websocket.WsSession.addMessageHandler(WsSession.java:168)
at org.apache.tomcat.websocket.pojo.PojoEndpointBase.doOnOpen(PojoEndpointBase.java:81)
at org.apache.tomcat.websocket.pojo.PojoEndpointServer.onOpen(PojoEndpointServer.java:70)
at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:129)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:629)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
我不确定自己做错了什么,也不知道为何出现了这个异常。