有什么办法可以在J2EE服务器启动时执行某些操作?我正在使用Tomcat [英] Is there a way to do something on a J2EE server-start? I'm using Tomcat

问题描述

我正在尝试让J2EE服务器主动向另一个服务器注册(读取:向其中发送一些消息)，而不是作为对某些事情的响应.令人惊讶的是，我发现关于是否存在要扩展的事件和/或类的信息或问题很少，这些问题或问题将使我对服务器启动"有所了解.我总是可以编写一个脚本，该脚本首先部署到服务器，然后通过请求进行提示，但我确实希望有一个更干净的解决方案.

I'm trying to get a J2EE server to register (read: send some message to) with another server on its own initiative - not as a response to something. Surprisingly, I've found very little information or questions on whether there are events and/or classes to extend that will give me a handle on "server-start". I could always write a script that first deploys to server, then prompts it with a request, but I'd really rather have a cleaner solution..

谢谢.

推荐答案

实现 ，然后使用contextInitialized()方法完成该工作.

Implement ServletContextListener and do the job in contextInitialized() method.

public class Config implements ServletContextListener {

    @Override
    public void contextInitialized(ServletContextEvent event) {
        // Do stuff during server startup.
    }

    @Override
    public void contextDestroyed(ServletContextEvent event) {
        // Do stuff during server shutdown.
    }

}

使用Tomcat 7时，请按照以下说明进行注册，以使其运行

When you're using Tomcat 7, register it as follows to get it to run

@WebListener
public class Config implements ServletContextListener {

或者在使用Tomcat 6或更早版本时，请在web.xml中注册它

Or when using Tomcat 6 or older, register it in web.xml instead

<listener>
    <listener-class>com.example.Config</listener-class>
</listener>

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