mainservlet.java

java 实现定时任务 完整可直接可用的代码 及 说明 自己写的

package com.util;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.tiling.scheduling.Scheduler;
import org.tiling.scheduling.iterators.DailyIterator;

public class MainServlet extends HttpServlet {
	protected static Logger log = Logger.getLogger(MainServlet.class);
		
	/**
	 * Constructor of the object.
	 */
	public MainServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {		
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {		
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		System.out.println("......sgsj application initialize.....");
		
		startAutoCountTask();
		
		System.out.println("......sgsj application initialize over.....");
		
	}

	private void startAutoCountTask(){
		// 每晚零晨两点　运行 扫描上传目录中的所有文件 插入数据库
		new Scheduler().schedule(new HelpClass(),new DailyIterator(2, 0, 0));
		
	}
}