java.lang.RuntimeException: java.lang.ClassCastException: org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to io.undertow.websockets.jsr.ServerWebSocketContainer

Stack Overflow | user5139637 | 9 months ago
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Root Cause Analysis

  1. java.lang.ClassCastException

    org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to io.undertow.websockets.jsr.ServerWebSocketContainer

    at io.undertow.websockets.jsr.Bootstrap$WebSocketListener.contextInitialized()
  2. Undertow WebSockets JSR356 implementations
    Bootstrap$WebSocketListener.contextInitialized
    1. io.undertow.websockets.jsr.Bootstrap$WebSocketListener.contextInitialized(Bootstrap.java:104)
    1 frame
  3. Undertow Servlet
    DeploymentManagerImpl.deploy
    1. io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
    2. io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:198)
    2 frames
  4. WildFly: Undertow
    UndertowDeploymentService$1.run
    1. org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100)
    2. org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82)
    2 frames
  5. Java RT
    Thread.run
    1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    2. java.util.concurrent.FutureTask.run(FutureTask.java:266)
    3. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    4. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    5. java.lang.Thread.run(Thread.java:745)
    5 frames
  6. JBoss Threads
    JBossThread.run
    1. org.jboss.threads.JBossThread.run(JBossThread.java:320)
    1 frame