有没有办法只在 Tomcat/Wildfly/Glassfish 启动时运行方法/类? [英] Is there a way to run a method/class only on Tomcat/Wildfly/Glassfish startup?

问题描述

我需要在 Tomcat 启动时删除临时文件，传递到包含临时文件的文件夹在 applicationContext.xml 中.

I need to remove temp files on Tomcat startup, the pass to a folder which contains temp files is in applicationContext.xml.

有没有办法只在 Tomcat 启动时运行一个方法/类?

Is there a way to run a method/class only on Tomcat startup?

推荐答案

您可以编写一个 ServletContextListener 从 contextInitialized() 方法调用您的方法.您在 web.xml 中将侦听器附加到您的 web 应用程序，例如

You could write a ServletContextListener which calls your method from the contextInitialized() method. You attach the listener to your webapp in web.xml, e.g.

<listener>
   <listener-class>my.Listener</listener-class>
</listener>

和

package my;

public class Listener implements javax.servlet.ServletContextListener {

   public void contextInitialized(ServletContext context) {
      MyOtherClass.callMe();
   }
}

严格来说，这只会在 webapp 启动时运行一次，而不是在 Tomcat 启动时运行，但这可能是一样的.

Strictly speaking, this is only run once on webapp startup, rather than Tomcat startup, but that may amount to the same thing.

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