.net core中Quartz的使用方法
时间：2021-12-08 13:18:32|栏目：.NET代码|点击： 次
原来工作中有用到定时任务Quartz，不过是在MVC项目中，现在net core项目中也要用到，就开始改版。中间发现在网上的教程只有执行定时计划的过程，却很少有人写注册的过程，觉得有点略坑。所以写此文章一是自己做个记录，二是希望能帮助到其他人。后面还把此功能做出了多任务定时执行，网上关于net core的教程更是少了，花费了不少时间实现了出来。
Quartz版本：3.0.7
1.NuGet中下载安装Quartz
2.新建Quartz帮助类
(1)新建QuartzJob类，代码如下：
public class QuartzJob : IJob
{
public async Task Execute(IJobExecutionContext context)
{
var jobKey = context.JobDetail.Key;//获取job信息
var triggerKey = context.Trigger.Key;//获取trigger信息
LogHelper.Info($"{DateTime.Now} QuartzJob:==>>自动执行.{jobKey.Name}|{triggerKey.Name}");
await Task.CompletedTask;
}
}
ps： 上面代码中的jobKey和triggerKey可获取到自己定义的job和trigger的信息，这样做多任务时可区分要执行的是哪个任务. 另LogHelper.Info是自己封装好的日子记录类，可替换为自己的日志类
（2）新建QuartzFactory类，代码如下：
public class QuartzFactory : IJobFactory
{
private readonly IServiceProvider _serviceProvider;
public QuartzFactory(IServiceProvider serviceProvider)
{
_serviceProvider = serviceProvider;
}
public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler)
{
var jobDetail = bundle.JobDetail;
var job = (IJob)_serviceProvider.GetService(jobDetail.JobType);
return job;
}
public void ReturnJob(IJob job)
{
}
}
（3）新建QuartzService类，代码如下：
#region 单任务
public static void StartJob<TJob>() where TJob : IJob
{
var scheduler = new StdSchedulerFactory().GetScheduler().Result;
var job = JobBuilder.Create<TJob>()
.WithIdentity("job")
.Build();
var trigger1 = TriggerBuilder.Create()
.WithIdentity("job.trigger")
.StartNow()
.WithSimpleSchedule(x => x.WithInterval(TimeSpan.FromSeconds(5)).RepeatForever())
.ForJob(job)
.Build();
scheduler.AddJob(job, true);
scheduler.ScheduleJob(job, trigger1);
scheduler.Start();
}
#endregion
#region 多任务
public static void StartJobs<TJob>() where TJob : IJob
{
var scheduler = new StdSchedulerFactory().GetScheduler().Result;
var job = JobBuilder.Create<TJob>()
.WithIdentity("jobs")
.Build();
var trigger1 = TriggerBuilder.Create()
.WithIdentity("job.trigger1")
.StartNow()
.WithSimpleSchedule(x => x.WithInterval(TimeSpan.FromSeconds(5)).RepeatForever())
.ForJob(job)
.Build();
var trigger2 = TriggerBuilder.Create()
.WithIdentity("job.trigger2")
.StartNow()
.WithSimpleSchedule(x => x.WithInterval(TimeSpan.FromSeconds(11)).RepeatForever())
.ForJob(job)
.Build();
var dictionary = new Dictionary<IJobDetail, IReadOnlyCollection<ITrigger>>
{
{job, new HashSet<ITrigger> {trigger1, trigger2}}
};
scheduler.ScheduleJobs(dictionary, true);
scheduler.Start();
}
#endregion
#region 配置
public static void AddQuartz(this IServiceCollection services, params Type[] jobs)
{
services.AddSingleton<IJobFactory, QuartzFactory>();
services.Add(jobs.Select(jobType => new ServiceDescriptor(jobType, jobType, ServiceLifetime.Singleton)));
services.AddSingleton(provider =>
{
var schedulerFactory = new StdSchedulerFactory();
var scheduler = schedulerFactory.GetScheduler().Result;
scheduler.JobFactory = provider.GetService<IJobFactory>();
scheduler.Start();
return scheduler;
});
}
#endregion
3.在Startup.cs中注册代码
public void ConfigureServices(IServiceCollection services)
{
services.AddQuartz(typeof(QuartzJob));
//........
}
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
QuartzService.StartJobs<QuartzJob>();
//........
}
ps: 因AddQuartz方法定义的是Type[]类型，所以可传多个执行类，如：services.AddQuartz(typeof(QuartzJob1), typeof(QuartzJob2)); 不过这样做StartJob()方法就得另处理下，这里就略过
OK，大功告成，这个东西折腾了两天终于尘埃落定了，执行结果如下：
