下面就是调度引擎，定时执行配置对象的任务
public class Scheduler
{
private SchedulerConfiguration configuration = null;
public Scheduler(SchedulerConfiguration config)
{
configuration = config;
}
public void Start()
{
while(true)
{
//执行每一个任务
foreach(ISchedulerJob job in configuration.Jobs)
{
ThreadStart myThreadDelegate = new ThreadStart(job.Execute);
Thread myThread = new Thread(myThreadDelegate);
myThread.Start();
Thread.Sleep(configuration.SleepInterval);
}
}
}
}
{
private SchedulerConfiguration configuration = null;
public Scheduler(SchedulerConfiguration config)
{
configuration = config;
}
public void Start()
{
while(true)
{
//执行每一个任务
foreach(ISchedulerJob job in configuration.Jobs)
{
ThreadStart myThreadDelegate = new ThreadStart(job.Execute);
Thread myThread = new Thread(myThreadDelegate);
myThread.Start();
Thread.Sleep(configuration.SleepInterval);
}
}
}
}
所有的准备工作已经完成，下面就是激活引擎的工作了。为了让我们的任务计划执行，我们在Global.asax.cs文件里的Applicatio_Start和Application_End里进行建立和销毁工作，首先建立一个调度进程运行的线程，我们这里的运行间隔时间为3秒钟。
public System.Threading.Thread schedulerThread = null;
protected void Application_Start(Object sender, EventArgs e)
{
SchedulerConfiguration config = new SchedulerConfiguration(1000*3);
config.Jobs.Add(new SampleJob());
Scheduler scheduler = new Scheduler(config);
System.Threading.ThreadStart myThreadStart = new System.Threading.ThreadStart(scheduler.Start);
System.Threading.Thread schedulerThread = new System.Threading.Thread(myThreadStart);
schedulerThread.Start();
}
protected void Application_Start(Object sender, EventArgs e)
{
SchedulerConfiguration config = new SchedulerConfiguration(1000*3);
config.Jobs.Add(new SampleJob());
Scheduler scheduler = new Scheduler(config);
System.Threading.ThreadStart myThreadStart = new System.Threading.ThreadStart(scheduler.Start);
System.Threading.Thread schedulerThread = new System.Threading.Thread(myThreadStart);
schedulerThread.Start();
}
最后还需要在程序退出时进行销毁：
protected void Application_End(Object sender, EventArgs e)
{
if (null != schedulerThread)
{
schedulerThread.Abort();
}
}
{
if (null != schedulerThread)
{
schedulerThread.Abort();
}
}
好了，在VS.NET里建立一个C#的Web应用程序工程，建立TaskScheduler.cs类，并修改相应的Global.asax.cs文件。为了能看到效果，我们再建立一个表单WebForm1.aspx，定时刷新来检查我们所记录的数据：
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false"
Inherits="CSTest.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>在Web应用程序中执行计划任务的例子</title>
<meta http-equiv="refresh" content="10">
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<iframe style="width:100%;height:100%" src="/SchedulerJob/SchedulerJob.txt"></iframe>
</form>
</body>
</HTML>
Inherits="CSTest.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>在Web应用程序中执行计划任务的例子</title>
<meta http-equiv="refresh" content="10">
<meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<iframe style="width:100%;height:100%" src="/SchedulerJob/SchedulerJob.txt"></iframe>
</form>
</body>
</HTML>
对工程进行编译并运行，就可以看到结果了，结果如下：
计划任务测试开始：
2003-13-10 11:08:15
2003-13-10 11:08:18
2003-13-10 11:08:21
2003-13-10 11:08:24
2003-13-10 11:08:27
2003-13-10 11:08:30
需要说明的是，以上只是在Web应用程序中执行计划任务的简单例子，对于多个任务来说，需要在不同的线程内进行工作，对计划的安排也是很简单的，实际还需要站点堵塞，当机的情况
