Tomcat启动就执行特定方法

import java.util.Timer;

import javax.servlet.ServletContextEvent;

import javax.servlet.ServletContextListener;

public class TestListener implements ServletContextListener {

private Timer timer = null;

public void contextInitialized(ServletContextEvent event) {

timer = new Timer(true);

timer.schedule(new TestTimer(), 0, 86400000);//milliseconds

}

public void contextDestroyed(ServletContextEvent event) {

timer.cancel();

}

}

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import java.util.TimerTask;

public class TestTimer extends TimerTask {

public void run() {

// do something ...

}

}

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web.xml:

<listener>

<listener-class>test.TestListener</listener-class>

</listener>

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