FluentScheduler实现定时任务

FluentScheduler是一个简单的任务调度框架，使用起来非常方便。作者的源码和例子的地址：

https://github.com/fluentscheduler/FluentScheduler

1.首先引用FluentScheduler.dll，dll数据源可通过NuGet程序包获取。打开管理解决方案的NuGet程序包，输入FluentScheduler即可。

步骤：状态栏选择 工具 - NuGet程序包管理器 – 管理解决方案的NuGet程序包，然后输入FluentScheduler即可。

 2.新建Registry继承类

using System;
using FluentScheduler;
using System.Threading;

namespace DemoProject2020
{
    public class TimingRoutine:Registry
    {
        public  TimingRoutine()
        {
            Welcome();
        }
        private void Welcome()
        {
            // 每2秒一次循环
            Schedule<TaskJob>().ToRunNow().AndEvery(2).Seconds();

            // 5秒后，只一次
            Schedule<TaskJob>().ToRunOnceIn(5).Seconds();

            //每天晚上21：15分执行
            Schedule(() => Console.WriteLine("Timed Task - Will run every day at 9:15pm: " + DateTime.Now)).ToRunEvery(1).Days().At(21, 15);

            // 每个月的执行
            Schedule(() =>
            {
                Console.WriteLine("Complex Action Task Starts: " + DateTime.Now);
                Thread.Sleep(1000);
                Console.WriteLine("Complex Action Task Ends: " + DateTime.Now);
            }).ToRunNow().AndEvery(1).Months().OnTheFirst(DayOfWeek.Monday).At(3, 0);

            //先执行第一个Job、再执行第二个Job;完成后等5秒继续循环
            Schedule<TaskJob>().AndThen<TaskJob>().ToRunNow().AndEvery(5).Seconds();
            //直接运行
            Schedule(() => Console.Write("3, "))
                .WithName("[welcome]")
                .AndThen(() => Console.Write("2, "))
                .AndThen(() => Console.Write("1, "))
                .AndThen(() => Console.WriteLine("Live!"));
        }
    }
    
}

3.新建调用任务类继承IJob

using System;
using System.IO;
using FluentScheduler;

namespace DemoProject2020
{
    public class TaskJob:IJob
    {
        void IJob.Execute()
        {
            var str = "循环每2秒执行一次；现在时间是：" + DateTime.Now.ToString();
            System.IO.StreamWriter writer = null;
            try
            {
                //写入日志 
                string path= Server.MapPath("~/logs"); ;
                //不存在则创建错误日志文件夹
                if (!Directory.Exists(path))
                {
                    Directory.CreateDirectory(path);
                }
                path += string.Format(@"{0}.txt", DateTime.Now.ToString("yyyy-MM-dd"));
                writer = !System.IO.File.Exists(path) ? System.IO.File.CreateText(path) : System.IO.File.AppendText(path); //判断文件是否存在，如果不存在则创建，存在则添加
                writer.WriteLine(str);
                writer.WriteLine("********************************************************************************************");
            }
            finally
            {
                if (writer != null)
                {
                    writer.Close();
                }
            }
        }
    }

}

 4.新建Global.asax，全局应用程序处理类

 Global.asax添加注册定时程序

 protected void Application_Start(object sender, EventArgs e)
        {
            //注册定时任务
             JobManager.Initialize(new TimingRoutine());             
        }

 补充：

Let's suppose it's 10:00 of a Monday morning and you want to start a job that runs every Monday at 14:00. Should the first run of your job be today or only on the next week Monday?

If you want the former (not waiting for a whole week):

如果想每周一10点运行，那个你选择现在就开始你的任务还是下周一再进行执行，如果现在开始，而不是等一周后执行

// Every "zero" weeks
Schedule<MyJob>().ToRunEvery(0).Weeks().On(DayOfWeek.Monday).At(14, 0);
Or if you want the latter (making sure that at least one week has passed):

如果选择下周一执行，确保至少一周已经过去。
// Every "one" weeks
Schedule<MyJob>().ToRunEvery(1).Weeks().On(DayOfWeek.Monday).At(14, 0);