QuartzNet3.0实现作业调度

Quartz是一个完全由JAVA编写的开源作业调度框架。

Quartz.NET是Quartz的.NET移植,它用C#写成,可用于.Net以及.Net Core的应用中。

目前最新的quartz.net版本3.0.6 只支持.netframework4.5.2及.netstandard2.0及以上版本

QuartzNet3.0实现作业调度

官方实例:https://www.quartz-scheduler.net/documentation/quartz-3.x/quick-start.html

using Quartz;
using Quartz.Impl;
using Quartz.Logging;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Text;
using System.Threading.Tasks; namespace Demo
{
class Program
{
private static void Main(string[] args)
{
LogProvider.SetCurrentLogProvider(new ConsoleLogProvider()); RunProgramRunExample().GetAwaiter().GetResult(); Console.WriteLine("Press any key to close the application");
Console.ReadKey();
} private static async Task RunProgramRunExample()
{
try
{
// Grab the Scheduler instance from the Factory
NameValueCollection props = new NameValueCollection
{
{ "quartz.serializer.type", "binary" }
};
StdSchedulerFactory factory = new StdSchedulerFactory(props);
IScheduler scheduler = await factory.GetScheduler(); // and start it off
await scheduler.Start(); // define the job and tie it to our HelloJob class
IJobDetail job = JobBuilder.Create<HelloJob>()
.WithIdentity("job1", "group1")
.Build(); // Trigger the job to run now, and then repeat every 10 seconds
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity("trigger1", "group1")
.StartNow()
.WithSimpleSchedule(x => x
.WithIntervalInSeconds()
.RepeatForever())
.Build(); // Tell quartz to schedule the job using our trigger
await scheduler.ScheduleJob(job, trigger); // some sleep to show what's happening
await Task.Delay(TimeSpan.FromSeconds()); // and last shut down the scheduler when you are ready to close your program
await scheduler.Shutdown();
}
catch (SchedulerException se)
{
Console.WriteLine(se);
}
} // simple log provider to get something to the console
private class ConsoleLogProvider : ILogProvider
{
public Logger GetLogger(string name)
{
Logger loger = LoggerMethod;
return loger; return (level, func, exception, parameters) =>
{
if (level >= LogLevel.Info && func != null)
{
Console.WriteLine("[" + DateTime.Now.ToLongTimeString() + "] [" + level + "] " + func(), parameters);
}
return true;
};
} private bool LoggerMethod(LogLevel logLevel, Func<string> messageFunc, Exception exception = null, params object[] formatParameters)
{
if (logLevel >= LogLevel.Info && messageFunc != null)
{
Console.WriteLine("[" + DateTime.Now.ToLongTimeString() + "] [" + logLevel + "] " + messageFunc(), formatParameters);
}
return true;
} public IDisposable OpenNestedContext(string message)
{
throw new NotImplementedException();
} public IDisposable OpenMappedContext(string key, string value)
{
throw new NotImplementedException();
}
}
} public class HelloJob : IJob
{
public async Task Execute(IJobExecutionContext context)
{
await Console.Out.WriteLineAsync("Greetings from HelloJob!");
}
} }

看了这个官方的示例,你会发现QuarztNet3.0版本较之2.0版本,引入了async/await

下面记录一下学习过程:

一、使用VS2013新建Winform项目,.Net版本为4.5.2,通过Nuget命令行获取Quarzt.Net:Install-Package Quartz. 如果你在安装过程中报错,那么,要注意你的.Net版本

二、万事俱备,开始编码

多任务,一个每分钟的第30秒播放音频,一个每分钟的第0秒写文本文件

private async void PlaySound()
{
//1.通过工厂获取一个调度器的实例
StdSchedulerFactory factory = new StdSchedulerFactory();
_scheduler = await factory.GetScheduler();
await _scheduler.Start(); //创建任务对象
IJobDetail job = JobBuilder.Create<SoundJob>()
.WithIdentity("job1", "group1")
.Build(); //创建触发器
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity("trigger1", "group1")
.StartNow()
.WithCronSchedule("30 0/1 * * * ?")//每分钟的第30秒执行
.Build(); //将任务加入到任务池
await _scheduler.ScheduleJob(job, trigger); job = JobBuilder.Create<PrintJob>()
.WithIdentity("job2", "group1")
.Build(); trigger = TriggerBuilder.Create()
.WithIdentity("trigger2", "group1")
.StartNow()
.WithCronSchedule("0 0/1 * * * ?")//每分钟的第0秒执行
.Build(); await _scheduler.ScheduleJob(job, trigger);
}
public class PrintJob : IJob
{
string fileName = "printlog.txt";
public Task Execute(IJobExecutionContext context)
{
StreamWriter writer = new StreamWriter(fileName, true);
Task task = writer.WriteLineAsync(string.Format("{0}", DateTime.Now.ToLongTimeString()));
writer.Close();
writer.Dispose();
return task;
}
}
public class SoundJob : IJob
{
public static Action<string> _printLogCallBack; public string Sound { get; set; } public Task Execute(IJobExecutionContext context)
{
JobDataMap jobDataMap = context.JobDetail.JobDataMap;
string sound = jobDataMap.GetString("sound");
int number = jobDataMap.GetInt("number"); if (_printLogCallBack != null)
{ _printLogCallBack(string.Format("{0}[{1}] 执行任务 Sound {2}", Environment.NewLine, DateTime.Now.ToLongTimeString(), Sound)); } return Task.Factory.StartNew(() =>
{
SoundPlayer player = new SoundPlayer();
player.SoundLocation = @"F:\FFOutput\421204264234974-.wav";
player.Load();
player.Play();
});
}
}

以上是主要部分,另外还涉及到日志部分,日志我是直接输出到UI上,我们可以看到以下编码的区别,ConsoleLogProvider中输出的日志可以直接打印,而SoundJob中的却不可以,说明SoundJob中的方法是异步执行的,需要解决跨线程访问UI控件的问题,我们可以使用UI线程的上下文对象SynchronizationContext _syncContext,将输出日志的方法,委托给UI线程执行。

private void Form1_Load(object sender, EventArgs e)
{
ConsoleLogProvider logProvider = new ConsoleLogProvider();
logProvider.SetLogCallBack((log) =>
{
this.rchMessage.AppendText(log);
}); SoundJob._printLogCallBack = (log) =>
{
_syncContext.Send((obj) =>
{
this.rchMessage.AppendText(log.ToString());
}, null);
}; LogProvider.SetCurrentLogProvider(logProvider);
}

关于Cron表达式:

/*
由7段构成:秒 分 时 日 月 星期 年(可选) "-" :表示范围 MON-WED表示星期一到星期三
"," :表示列举 MON,WEB表示星期一和星期三
"*" :表是“每”,每月,每天,每周,每年等
"/" :表示增量:0/15(处于分钟段里面) 每15分钟,在0分以后开始,3/20 每20分钟,从3分钟以后开始
"?" :只能出现在日,星期段里面,表示不指定具体的值
"L" :只能出现在日,星期段里面,是Last的缩写,一个月的最后一天,一个星期的最后一天(星期六)
"W" :表示工作日,距离给定值最近的工作日
"#" :表示一个月的第几个星期几,例如:"6#3"表示每个月的第三个星期五(1=SUN...6=FRI,7=SAT) 如果Minutes的数值是 '0/15' ,表示从0开始每15分钟执行 如果Minutes的数值是 '3/20' ,表示从3开始每20分钟执行,也就是‘3/23/43’
*/

运行效果图:

QuartzNet3.0实现作业调度

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