quartz 是个开源的作业调度框架.
安装：install-package quartz
官网文档地址:
资源比较多,这里不做介绍。
任务设置有两种方式：simpletrigger和crontrigger，如下：
var trigger = (isimpletrigger) triggerbuilder.create()
.withidentity("trigger1", "group1")
.startat(mystarttime) // some date
.forjob("job1", "group1") // identify job with name, group strings
var trigger = triggerbuilder.create()
.withidentity("trigger3", "group1")
.withcronschedule("0 0/2 8-17 * * ?")
.forjob("myjob", "group1")
.build();
第二种的在线表达式生成工具网址:
在这里写个控制台的demo来看看定时任务的效果，我们先简单的封装一下任务的启动和停止等，主要代码如下：
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public class quartzhelper
{
private static quartzhelper instance = new quartzhelper();
public static quartzhelper instance
{
get
{
if (instance == null)
{
instance = new quartzhelper();
}
return instance;
}
}
private const string job_group_name = "job_group_name";
private const string trigger_group_name = "trigger_group_name";
/// <summary>
/// 程序调度
/// </summary>
private static ischeduler _scheduler;
/// <summary>
/// 初始化任务调度对象
/// </summary>
private quartzhelper()
{
}
/// <summary>
/// 时间间隔执行任务
/// </summary>
/// <typeparam name="t">任务类，必须实现ijob接口</typeparam>
/// <param name="seconds">时间间隔(单位：毫秒)</param>
public async task startjobexecuteinterval<t>(int seconds, string jobname = null, string jobgroupname = null, string triggername = null, string triggergroupname = null) where t : ijob
{
await initjobs();
//ijobdetail job = jobbuilder.create<t>().withidentity("job1", "group1").build();
ijobdetail job = jobbuilder.create<t>().build();
itrigger trigger = triggerbuilder.create()
.startnow()
.withsimpleschedule(x => x.withintervalinseconds(seconds).repeatforever())
.build();
await _scheduler.schedulejob(job, trigger);
await _scheduler.start();
}
/// <summary>
/// 指定时间执行任务
/// </summary>
/// <typeparam name="t">任务类，必须实现ijob接口</typeparam>
/// <param name="cronexpression">cron表达式，即指定时间点的表达式</param>
public async task<triggerstate> startjobexecutebycron<t>(string cronexpression, string jobname, object para = null, datetime? starttime = null, datetime? endtime = null, string jobgroupname = job_group_name, string triggername = null, string triggergroupname = trigger_group_name) where t : ijob
{
await initjobs();
ijobdetail job = jobbuilder.create<t>()
.withidentity(jobname, jobgroupname)
.build();
job.jobdatamap.put("runner", para);
itrigger trigger;
if (starttime == null && endtime == null)
{
trigger = triggerbuilder.create()
.withidentity(triggername ?? jobname, triggergroupname)
.withcronschedule(cronexpression)
.build();
}
else if (starttime != null && endtime == null)
{
trigger = triggerbuilder.create()
.withidentity(triggername ?? jobname, triggergroupname)
.startat(cronhelper.datetime2datetimeoffset(starttime.value))
.withcronschedule(cronexpression)
.build();
}
else if (starttime == null && endtime != null)
{
trigger = triggerbuilder.create()
.withidentity(triggername ?? jobname, triggergroupname)
.endat(cronhelper.datetime2datetimeoffset(endtime.value))
.withcronschedule(cronexpression)
.build();
}
else
{
trigger = triggerbuilder.create()
.withidentity(triggername ?? jobname, triggergroupname)
.startat(cronhelper.datetime2datetimeoffset(starttime.value))
.endat(cronhelper.datetime2datetimeoffset(endtime.value))
.withcronschedule(cronexpression)
.build();
}
await _scheduler.schedulejob(job, trigger);
await _scheduler.start();
return await _scheduler.gettriggerstate(trigger.key);
}
public async task<triggerstate> modifyjobtime(string cronexpression, string jobname, string jobgroupname = job_group_name, string triggername = null, string triggergroupname = trigger_group_name)
{
ijobdetail job;
itrigger trigger;
job = await _scheduler.getjobdetail(new jobkey(jobname, jobgroupname));
trigger = await _scheduler.gettrigger(new triggerkey(triggername ?? jobname, triggergroupname));
if (job == null || trigger == null)
{
return triggerstate.none;
}
await _scheduler.unschedulejob(trigger.key);
trigger = triggerbuilder.create()
.withidentity(trigger.key.name, trigger.key.group)
.withcronschedule(cronexpression)
.build();
await _scheduler.schedulejob(job, trigger);
return await _scheduler.gettriggerstate(trigger.key);
}
public async task<triggerstate> removejob(string jobname, string jobgroupname = job_group_name, string triggername = null, string triggergroupname = trigger_group_name)
{
ijobdetail job;
itrigger trigger;
job = await _scheduler.getjobdetail(new jobkey(jobname, jobgroupname));
trigger = await _scheduler.gettrigger(new triggerkey(triggername ?? jobname, triggergroupname));
if (job == null || trigger == null)
{
return triggerstate.none;
}
await _scheduler.unschedulejob(trigger.key);
await _scheduler.deletejob(job.key);
return await _scheduler.gettriggerstate(trigger.key);
}
public async task<triggerstate> pausejob(string jobname, string jobgroupname = job_group_name, string triggername = null, string triggergroupname = trigger_group_name)
{
ijobdetail job;
itrigger trigger;
job = await _scheduler.getjobdetail(new jobkey(jobname, jobgroupname));
trigger = await _scheduler.gettrigger(new triggerkey(triggername ?? jobname, triggergroupname));
if (job == null || trigger == null)
{
return triggerstate.none;
}
await _scheduler.pausejob(job.key);
return await _scheduler.gettriggerstate(trigger.key);
}
public async task<triggerstate> resumejob(string jobname, string jobgroupname = job_group_name, string triggername = null, string triggergroupname = trigger_group_name)
{
ijobdetail job;
itrigger trigger;
job = await _scheduler.getjobdetail(new jobkey(jobname, jobgroupname));
trigger = await _scheduler.gettrigger(new triggerkey(triggername ?? jobname, triggergroupname));
if (job == null || trigger == null)
{
return triggerstate.none;
}
await _scheduler.resumejob(job.key);
return await _scheduler.gettriggerstate(trigger.key);
}
public async task<triggerstate> getjobstate(string jobname, string jobgroupname = job_group_name, string triggername = null, string triggergroupname = trigger_group_name)
{
ijobdetail job;
itrigger trigger;
job = await _scheduler.getjobdetail(new jobkey(jobname, jobgroupname));
trigger = await _scheduler.gettrigger(new triggerkey(triggername ?? jobname, triggergroupname));
if (job == null || trigger == null)
{
return triggerstate.none;
}
return await _scheduler.gettriggerstate(trigger.key);
}
public async task initjobs()
{
if (_scheduler != null)
{
return;
}
//配置文件的方式，配置quartz实例
ischedulerfactory schedulerfactory = new stdschedulerfactory();
_scheduler = await schedulerfactory.getscheduler();
}
public async task startjobs()
{
if (_scheduler != null)
{
await _scheduler.start(); return;
}
//配置文件的方式，配置quartz实例
ischedulerfactory schedulerfactory = new stdschedulerfactory();
_scheduler = await schedulerfactory.getscheduler();
await _scheduler.start();
}
public void standbyjobs()
{
try
{
if (_scheduler == null) return;
if (!_scheduler.instandbymode)
{
_scheduler.standby();
}
}
catch (exception ex)
{
throw new exception(ex.message);
}
}
public void restartjobs()
{
_scheduler.shutdown();
_scheduler.start();
}
public datetime[] getnextruntime(string cronexpression, datetime? starttime,datetime? endtime, int number = 1)
{
try
{
itrigger trigger = null;
if (starttime == null && endtime == null)
{
trigger = triggerbuilder.create()
.withcronschedule(cronexpression)
.build();
}
else if (starttime != null && endtime == null)
{
trigger = triggerbuilder.create()
.startat(cronhelper.datetime2datetimeoffset(starttime.value))
.withcronschedule(cronexpression)
.build();
}
else if (starttime == null && endtime != null)
{
trigger = triggerbuilder.create()
.endat(cronhelper.datetime2datetimeoffset(endtime.value))
.withcronschedule(cronexpression)
.build();
}
else
{
trigger = triggerbuilder.create()
.startat(cronhelper.datetime2datetimeoffset(starttime.value))
.endat(cronhelper.datetime2datetimeoffset(endtime.value))
.withcronschedule(cronexpression)
.build();
}
ilist<datetimeoffset> dates = triggerutils.computefiretimes(trigger as ioperabletrigger, null, number).tolist();
if (dates != null && dates.count > 0)
{
return dates.select(p => timezoneinfo.converttimefromutc(p.datetime, timezoneinfo.local)).toarray();
}
}
catch (exception ex)
{
}
return null;
}
}
执行一个每5s执行一次的例子如下：
var triggerstate = await quartzhelper.instance.startjobexecutebycron<hellojob>("0/5 * * * * ?", "测试1");
代码下载地址如下：https://pan.baidu.com/s/1w1uwofpgyfo_etdpheegsg
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