package com.lid.servlet;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MyTest extends HttpServlet {
	public MyTest() {
		super();
	}
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {}

	public void init() throws ServletException {
		String newDir2 = "D://lidtest";
		File dir=new File(newDir2);
		timer1(dir);
	}
	//删除指定路径下的所有文件
    public static boolean deleteDir(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            //递归删除目录中的子目录下
            for (int i=0; i<children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
            return true;
        }else {
			// 获取文件最后修改时间
			Date d = new Date(dir.lastModified());
			//获取两天前的时间
			Date t = new Date();
			Calendar resultDate=Calendar.getInstance();
			resultDate.setTime(t);
			resultDate.add(Calendar.DATE,-2);
			t = resultDate.getTime();
			//删除两天前的文件
			if(t.getTime()>=d.getTime()){
				return dir.delete();
			}else{
				return false;
			}
		}
    }
    //定时执行某任务(每两天执行一次)
    public static void timer1(File dir) {
        Timer timer = new Timer();
        MyTask myTask=new MyTask(dir);
        timer.schedule(myTask, 1000, 48*60*60*1000);
    }
}