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jsp中监听器和定时器的结合的程序

转载自：http://chengyue2007.iteye.com/blog/472431
package Unit.Test;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextAttributeEvent;
import javax.servlet.ServletContextAttributeListener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import test.TimerTest;

public class ServletConextListener implements ServletContextListener,
        ServletContextAttributeListener {

    private ServletContext servletContext;

    private String AttributeName;

    private Object AttributeValue;

    public void contextDestroyed(ServletContextEvent sce) {
        System.out.println("####ServletContext上下文销毁");

    }

    public void contextInitialized(ServletContextEvent sce) {
        servletContext = sce.getServletContext();
        
        TimerTest test=new TimerTest();
        //这个是定时器的内容
        
        System.out.println("####上下文初始化");
        
        System.out.println("####ServletContext当前初始目录为:"
                + this.servletContext.getRealPath("/"));
        
    }

    public void attributeAdded(ServletContextAttributeEvent sce) {
        AttributeName = sce.getName();
        AttributeValue = sce.getValue();
        System.out.println("####ServletContext增加一个属性:");
        System.out.println("AttributeName:" + AttributeName);
        System.out.println("AttributeValue:" + AttributeValue);

    }

    public void attributeRemoved(ServletContextAttributeEvent sce) {
        AttributeName = sce.getName();
        AttributeValue = sce.getValue();
        System.out.println("####ServletContext删除一个属性:");
        System.out.println("AttributeName:" + AttributeName);
        System.out.println("AttributeValue:" + AttributeValue);
    }

    public void attributeReplaced(ServletContextAttributeEvent sce) {
        AttributeName = sce.getName();
        AttributeValue = sce.getValue();
        System.out.println("####ServletContext替换一个属性:");
        System.out.println("AttributeName:" + AttributeName);
        System.out.println("AttributeValue:" + AttributeValue);
    }

}
上面是监听器的内容，下面是定时器的内容

package test;

import java.io.IOException;
import java.util.Date;
import java.util.Timer;

public class TimerTest {
public TimerTest(){
Date time=new Date();
time.setHours(17);
time.setMinutes(48);
time.setSeconds(20);
Timer timer = new Timer();
timer.schedule(new MyTask(),time);//在1秒后执行此任务,每次间隔2秒
}

static class MyTask extends java.util.TimerTask{
@Override
public void run() {

System.out.println("我是来测试的。。我两秒出来一次");
}
}
}


下面是xml的配置方法
<listener>
<listener-class>Unit.Test.ServletConextListener</listener-class>
</listener>

posted on 2012-05-04 12:56 杨粼波 阅读(768) 评论(0)  编辑 收藏 引用


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