这次由于项目的需求：什么定时发送邮件通知，定时筛选取消客户下单未支付的订单
重新捡起定时器，在网上翻来找去找到----Quartz.Net老字号了并不表示它就真的老了哦
github:https://github.com/quartznet/quartznet
当然介绍的园子里文章很多跟官方文档https://www.quartz-scheduler.net介绍的都挺清楚的！用起来很简便!
so!接下来我简单介绍一下Quartz.Net框架设计 下图借用园友的应该不会介意
园子中搜索发现已经有同学去实践了，这里引用一下各位大大的博文地址（应该不会介意，嘻嘻），大家也可以参考学习：
http://www.cnblogs.com/knowledgesea/p/5145239.html Quartz.net持久化与集群部署开发详解
http://www.cnblogs.com/mushroom/p/4231642.html#3760225 Net作业调度(四)—quartz.net持久化和集群
http://www.cnblogs.com/lanxiaoke/p/6629481.html 任务调度之持久化（基于Quartz.net）
http://www.cnblogs.com/lanxiaoke/p/6637714.html 任务调度之集群（基于Quartz.net）
http://www.cnblogs.com/huangxincheng/p/6916246.html 使用sqlserver搭建高可用双机热备的Quartz集群部署【附源码】
在此博主自己将Quartz.net的所需类目做了一次整合，大伙可以瞅瞅
1 using Quartz; 2 using Quartz.Impl; 3 using System; 4 using System.Collections.Generic; 5 using System.Linq; 6 using System.Text; 7 using System.Threading.Tasks; 8 using Wshelper.Caching; 9 using Wshelper.Logging;10 11 namespace Commons.Helpers12 {13 ????public class QuartzHelper14 ????{15 ????????/// <summary>16 ????????/// 时间间隔执行任务17 ????????/// </summary>18 ????????/// <typeparam name="T">任务类，必须实现IJob接口</typeparam>19 ????????/// <param name="seconds">时间间隔(单位：毫秒)</param>20 ????????public static void ExecuteInterval<T>(int seconds) where T : IJob21 ????????{22 ????????????ISchedulerFactory factory = new StdSchedulerFactory();23 ????????????IScheduler scheduler = factory.GetScheduler();24 25 ????????????//IJobDetail job = JobBuilder.Create<T>().WithIdentity("job1", "group1").Build();26 ????????????IJobDetail job = JobBuilder.Create<T>().Build();27 28 ????????????ITrigger trigger = TriggerBuilder.Create()29 ????????????????.StartNow()30 ????????????????.WithSimpleSchedule(x => x.WithIntervalInSeconds(seconds).RepeatForever())31 ????????????????.Build();32 33 ????????????scheduler.ScheduleJob(job, trigger);34 35 ????????????scheduler.Start();36 ????????}37 ????????/// <summary>38 ????????/// 指定时间执行任务39 ????????/// </summary>40 ????????/// <typeparam name="T">任务类，必须实现IJob接口</typeparam>41 ????????/// <param name="cronExpression">cron表达式，即指定时间点的表达式</param>42 ????????public static void ExecuteByCron<T>(string cronExpression) where T : IJob43 ????????{44 ????????????ISchedulerFactory factory = new StdSchedulerFactory();45 ????????????IScheduler scheduler = factory.GetScheduler();46 47 ????????????IJobDetail job = JobBuilder.Create<T>().Build();48 49 ????????????//DateTimeOffset startTime = DateBuilder.NextGivenSecondDate(DateTime.Now.AddSeconds(1), 2);50 ????????????//DateTimeOffset endTime = DateBuilder.NextGivenSecondDate(DateTime.Now.AddYears(2), 3);51 52 ????????????ICronTrigger trigger = (ICronTrigger)TriggerBuilder.Create()53 ????????????????//.StartAt(startTime).EndAt(endTime)54 ????????????????.WithCronSchedule(cronExpression)55 ????????????????.Build();56 57 ????????????scheduler.ScheduleJob(job, trigger);58 59 ????????????scheduler.Start();60 61 ????????????//Thread.Sleep(TimeSpan.FromDays(2));62 ????????????//scheduler.Shutdown();63 ????????}64 ????}65 66 ????#region 任务执行例67 ????public class MyJob : IJob68 ????{69 ????????ILogger logger = LoggerFactory.CreateLog();70 ????????public void Execute(IJobExecutionContext context)71 ????????{72 ????????????//向c:\Quartz.txt写入当前时间并换行73 ????????????//System.IO.File.AppendAllText(@"c:\Quartz.txt", DateTime.Now + Environment.NewLine);74 ????????????ICache cache = new MemoryCacheFactory().Create();75 ????????????cache.Clear();76 ????????????logger.Info("时间:" + DateTime.Now.ToString() + "---------系统自动更新缓存!");77 ????????}78 ????}79 ????#endregion80 }启动：
1 public static void QuartzHelp()2 ????????{3 ????????????//#region Quartz调度任务4 ????????????string cronExpression = "1 0 0 * * ? "; //这是指每天的0点执行任务5 ????????????QuartzHelper.ExecuteByCron<MyJob>(cronExpression); //这是调用Cron计划方法6 ????????????//#endregion7 ????????}Quartz.Net 作者已经更新了支持.net standrad2.0了，就意味着可以在.net core平台使用了，下载地址:https://www.nuget.org/packages/Quartz/3.0.0-beta1，更新说明地址：https://www.quartz-scheduler.net/2017/10/08/quartznet-3.0-beta1-released.html，相信不久之后就会发布release版本，届时.net core框架开发就不怕没有定时器的支持了，～(￣▽￣～)(～￣▽￣)～
定时器--Quartz.Net
原文地址：https://www.cnblogs.com/Agui520/p/8142956.html