asp.net 定时执行程序

在一个项目中想实现以上功能,在项目中加入一个 Global.aspx文件即可实现。


public class Global : System.Web.HttpApplication
    {


        protected void Application_Start(object sender, EventArgs
e)
        {
            //定义定时器
            System.Timers.Timer
myTimer = new System.Timers.Timer(5000);
            myTimer.Elapsed += new
ElapsedEventHandler(myTimer_Elapsed);
            myTimer.Enabled =
true;
            myTimer.AutoReset = true;
        }


        void myTimer_Elapsed(object source, ElapsedEventArgs e)
       
{
            try
            {
               
Log.SaveNote(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + ":AutoTask is
Working!");
                YourTask();
            }
            catch
(Exception ee)
            {
               
Log.SaveException(ee);
            }
        }


        void YourTask()
        {
           
//在这里写你需要执行的任务
            Log.SaveNote(DateTime.Now.ToString("yyyy-MM-dd
HH:mm:ss") + ":采集开始!");
        }



        protected void Application_End(object sender, EventArgs
e)
        {
            Log.SaveNote(DateTime.Now.ToString("yyyy-MM-dd
HH:mm:ss") + ":Application End!");


            //下面的代码是关键,可解决IIS应用程序池自动回收的问题
           
Thread.Sleep(1000);
           
//这里设置你的web地址,可以随便指向你的任意一个aspx页面甚至不存在的页面,目的是要激发Application_Start           

            string url = "http://localhost:8031/default.aspx";
           
HttpWebRequest myHttpWebRequest =
(HttpWebRequest)WebRequest.Create(url);
            HttpWebResponse
myHttpWebResponse =
(HttpWebResponse)myHttpWebRequest.GetResponse();
            Stream
receiveStream = myHttpWebResponse.GetResponseStream();//得到回写的字节流
           

        }
    }


原文:

http://www.cnblogs.com/yangxiaohu1/archive/2010/02/06/net-autotask.html
posted @ 2012-01-06 21:27  咸鱼公子  Views(498)  Comments(0Edit  收藏  举报