WsContextListener (Apache Tomcat 8.5.57 API Documentation)

org.apache.tomcat.websocket.server

## Class WsContextListener

- java.lang.Object
- - org.apache.tomcat.websocket.server.WsContextListener

- All Implemented Interfaces:
    EventListener, ServletContextListener

      public class WsContextListener
      extends Object
      implements ServletContextListener

  In normal usage, this `ServletContextListener` does not need to be explicitly configured as the `WsSci` performs all the necessary bootstrap and installs this listener in the `ServletContext`. If the `WsSci` is disabled, this listener must be added manually to every `ServletContext` that uses WebSocket to bootstrap the `WsServerContainer` correctly.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `WsContextListener()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `contextDestroyed(ServletContextEvent sce)` Notification that the servlet context is about to be shut down.
    `void` | `contextInitialized(ServletContextEvent sce)` Notification that the web application initialization process is starting.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### WsContextListener

          public WsContextListener()

  - ### Method Detail

    - #### contextInitialized

          public void contextInitialized(ServletContextEvent sce)

      Description copied from interface: `javax.servlet.ServletContextListener`
      Notification that the web application initialization process is starting. All ServletContextListeners are notified of context initialization before any filter or servlet in the web application is initialized.
      Specified by:
        `contextInitialized` in interface `ServletContextListener`
      Parameters:
        `sce` - Information about the ServletContext that was initialized

    - #### contextDestroyed

          public void contextDestroyed(ServletContextEvent sce)

      Description copied from interface: `javax.servlet.ServletContextListener`
      Notification that the servlet context is about to be shut down. All servlets and filters have been destroy()ed before any ServletContextListeners are notified of context destruction.
      Specified by:
        `contextDestroyed` in interface `ServletContextListener`
      Parameters:
        `sce` - Information about the ServletContext that was destroyed

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