【报错】IllegalStateException: The remote endpoint was in state [TEXT_FULL_WRITING] which is an invalid

一、报错内容

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$StateMachine.checkState(WsRemoteEndpointImplBase.java:1234)
	at org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.textStart(WsRemoteEndpointImplBase.java:1196)
	at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendString(WsRemoteEndpointImplBase.java:190)
	at org.apache.tomcat.websocket.WsRemoteEndpointBasic.sendText(WsRemoteEndpointBasic.java:37)
	at com.xafande.atc.aftnsocket.ws.WebSocketServer.sendMessage(WebSocketServer.java:167)
	at com.xafande.atc.aftnsocket.ws.WebSocketServer.sendMessageValue(WebSocketServer.java:87)
	at com.xafande.atc.aftnsocket.ws.WebSocketServer.onOpen(WebSocketServer.java:117)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.apache.tomcat.websocket.pojo.PojoEndpointBase.doOnOpen(PojoEndpointBase.java:65)
	at org.apache.tomcat.websocket.pojo.PojoEndpointServer.onOpen(PojoEndpointServer.java:64)
	at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:133)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:914)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:834)

二、解决思路

1. 数据同步失败：这是一般最普遍的情况，可以对业务报错处加锁，确保数据传输的同步。
2. 连接超时：网络连接不稳定或网络延迟导致连接超时。

三、报错原因

报错前：

session.getAsyncRemote().sendText(message); //异步发送

更改为：

synchronized(session){
    session.getBasicRemote().sendText(message);
}

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本文参考：The remote endpoint was…

代码007普通

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