如何捕捉关闭tomcat的事件？ [英] how to catch the event of shutting down of tomcat?

问题描述

我想要的是每次tomcat服务器启动时都启动一个线程。为此我需要捕获关闭tomcat的事件。我可以这样做吗？我尝试使用会话来做但有时会话甚至关闭并重新启动tomcat后会持续存在吗？我的选择是什么？

What I want is to start a thread every time the tomcat server starts.For this I need to catch the event of shutting down of tomcat.How can I do this?I tried to do it using sessions but sometimes the session even persists after shutting down and restating tomcat?what are my options?

推荐答案

您可以尝试以这种方式捕获JVM关闭事件：

You can try to catch an JVM shutdown event in this way:

    Runtime.getRuntime().addShutdownHook(new Thread() {

        public void run() {
            System.out.println("BYE BYE");
        }
    });

另一个选项是使用 @WebListener 注释实现ServletContextListener。在这种情况下，不需要xml配置。

The other option is to implement ServletContextListener by using @WebListener Annotation. No xml configuration is required in this case.

@WebListener
public class MyLifeCycleListener implements ServletContextListener {

      public void contextInitialized(ServletContextEvent event) {
          //TODO ON START
      }

      public void contextDestroyed(ServletContextEvent event) {
          //TODO ON DESTROY
      }
}

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