3-16 14:59:13 109 ConsumeMessageThread_15 ERROR [] - The remote endpoint was in state [TEXT_FULL_WRITING] which is an invalid state for called method
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$StateMachine.checkState(WsRemoteEndpointImplBase.java:1206) ~[tomcat7-websocket.jar:7.0.90]
at org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.textStart(WsRemoteEndpointImplBase.java:1169) ~[tomcat7-websocket.jar:7.0.90]
at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendString(WsRemoteEndpointImplBase.java:194) ~[tomcat7-websocket.jar:7.0.90]
at org.apache.tomcat.websocket.WsRemoteEndpointBasic.sendText(WsRemoteEndpointBasic.java:37) ~[tomcat7-websocket.jar:7.0.90]
使用websocket 做实时聊天系统，在生产环境上有业务人员反馈收不到消息，查看日志发现有很多The remote endpoint was in state [TEXT_FULL_WRITING] which is an invalid state for called method,猜测很可能是它引起的。
产生原因：同时有多个线程调用了this.session.getBasicRemote().sendText(msg); 方法。
修改前：
public void sendMessage(String msg) {
try {
this.session.getBasicRemote().sendText(msg);
} catch (IOException e) {
this.sendMessage(new Response().failure(e.getMessage()));
}
}
修改后:
public void sendMessage(String msg) {
synchronized(this.session) {
try {
this.session.getBasicRemote().sendText(msg);
} catch (IOException e) {
this.sendMessage(new Response().failure(e.getMessage()));
}
}
}
