Quartz.Net使用
标签:Quartz.Net
在最近工作中,需要在不同时间及不同条件下定时发送通知及消息,最初使用 System.Timers.Timer
实现。虽然使用简单,随着需要定时处理的任务增多,考虑到 System.Timers.Timer
如下缺点:
- Timer没有持久化机制;
- Timer的调度没有弹性,仅能定时触发,不可自由配置触发时间点;
- Timer不能利用线程池,每一个Timer需要开启一个线程;
- 每个Timer中的任务为串行执行,同一时间只能有一个任务在执行。前一个任务执行失败影响后面任务的执行;
而Quartz.Net
的以下优点可解决以上问题
- 使用灵活,有多种使用方式(
eg
XML
配置任务,及代码实现),且可以混合使用;- 支持集群,作业分组,及作业远程管理;
- 可自定义精细的时间管理;
- 支持数据库,可持久化。
安装
- 通过
NuGet
安装Quartz.Net
说明
- 每一个任务需要继承接口
IJob
,并实现Execute(IJobExecutionContext context)
,该方法为每个Job
需要做的具体处理;
代码示例
- 代码创建job示例
private static void Main(string[] args)
{
try
{
WatchFile();
var fileName = Path.Combine(Environment.CurrentDirectory, "log4config.config");
XmlConfigurator.ConfigureAndWatch(new FileInfo(fileName));
StdSchedulerFactory factory = new StdSchedulerFactory();
IScheduler scheduler = factory.GetScheduler();
// 启动任务
scheduler.Start();
// 创建Job,可通过JobDataMap传递数据
IJobDetail job = JobBuilder.Create<HelloJob>()
.WithIdentity("job1", "group1")
.UsingJobData("jobSays", "Hello World!")
.UsingJobData("myFloatValue", 3.141f)
.Build();
//创建trigger
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity("trigger1", "group1")
.StartNow()
.WithSimpleSchedule(x => x.WithIntervalInSeconds(10).RepeatForever())
.Build();
//把job,trigger加入调度器
scheduler.ScheduleJob(job, trigger);
//关闭调度器
scheduler.Shutdown();
}
catch (Exception ex)
{
LogHelper.Error("Main" + ex);
}
Console.WriteLine("Press any key to close the application");
Console.ReadKey();
}
public class HelloJob : IJob
{
public void Execute(IJobExecutionContext context)
{
JobKey key = context.JobDetail.Key;
//获取执行的数据
JobDataMap dataMap = context.JobDetail.JobDataMap;
string jobSays = dataMap.GetString("jobSays");
float myFloatValue = dataMap.GetFloat("myFloatValue");
Console.Error.WriteLineAsync("Instance " + key + " of DumbJob says: " + jobSays + ", and val is: " + myFloatValue);
}
}
pub
XML
方式配置Job、Trigger
代码示例 1) 在quartz_jobs.xml
为配置Job
及Trigger
的文件 配置文件示例:
<?xml version="1.0" encoding="utf-8" ?>
<job-scheduling-data xmlns="http://quartznet.sourceforge.net/JobSchedulingData" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0">
<processing-directives>
<overwrite-existing-data>true</overwrite-existing-data>
</processing-directives>
<schedule>
<job>
<name>CommonIMRemindJob</name>
<group>IMRemindJob</group>
<description>IMRemindJob</description>
<job-type>NXIN.Qlw.JobServices.CommonIMRemindJobService,NXIN.Qlw.JobServices</job-type>
<durable>true</durable>
<recover>true</recover>
</job>
<trigger>
<simple>
<name>CommonIMRemindTrigger</name>
<group>IMRemindJob</group>
<description>CommonIMRemindTrigger</description>
<job-name>CommonIMRemindJob</job-name>
<job-group>IMRemindJob</job-group>
<misfire-instruction>SmartPolicy</misfire-instruction>
<repeat-count>-1</repeat-count>
<repeat-interval>300000</repeat-interval>
</simple>
</trigger>
</schedule>
</job-scheduling-data>
2)实现示例
private static void InitScheduler()
{
try
{
NameValueCollection props = new NameValueCollection
{
{ "quartz.serializer", "binary" }
};
XMLSchedulingDataProcessor processor = new XMLSchedulingDataProcessor(new SimpleTypeLoadHelper());
StdSchedulerFactory factory = new StdSchedulerFactory(props);
IScheduler scheduler = factory.GetScheduler();
processor.ProcessFileAndScheduleJobs("~/quartz_jobs.xml", scheduler);
scheduler.Start();
}
catch (SchedulerException se)
{
LogHelper.Error("/Main/RunProgramRunExample" + se);
}
}
参考博客:[蘑菇先生Net作业调度系列][1] [1]: http://www.cnblogs.com/mushroom/p/4850115.html