java.lang.IllegalArgumentException: javax.websocket.DeploymentException: endpoint 实例注册失败
        at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:139)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:928)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1688)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
        at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Unknown Source)
    Caused by: javax.websocket.DeploymentException: endpoint 实例注册失败
        at org.apache.tomcat.websocket.WsSession.<init>(WsSession.java:270)
        at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:127)
        ... 7 more
    Caused by: javax.naming.NameNotFoundException: 名称[cn.xxxx.websocket.PayWebsocketServer/xxCrudDao]未在此上下文中绑定。找不到[cn.xxxx.websocket.PayWebsocketServer]。
        at org.apache.naming.NamingContext.lookup(NamingContext.java:824)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:171)
        at org.apache.catalina.core.DefaultInstanceManager.lookupFieldResource(DefaultInstanceManager.java:576)
        at org.apache.catalina.core.DefaultInstanceManager.processAnnotations(DefaultInstanceManager.java:479)
        at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:173)
        at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:165)
        at org.apache.tomcat.websocket.WsSession.<init>(WsSession.java:268)
        ... 8 more