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原來工作中有用到定時任務(wù)Quartz，不過是在MVC項目中，現(xiàn)在net core項目中也要用到，就開始改版。中間發(fā)現(xiàn)在網(wǎng)上的教程只有執(zhí)行定時計劃的過程，卻很少有人寫注冊的過程，覺得有點略坑。所以寫此文章一是自己做個記錄，二是希望能幫助到其他人。后面還把此功能做出了多任務(wù)定時執(zhí)行，網(wǎng)上關(guān)于net core的教程更是少了，花費了不少時間實現(xiàn)了出來。

Quartz版本：3.0.7

1.NuGet中下載安裝Quartz

2.新建Quartz幫助類

(1)新建QuartzJob類，代碼如下：

public class QuartzJob : IJob
  {
    public async Task Execute(IJobExecutionContext context)
    {
      var jobKey = context.JobDetail.Key;//獲取job信息
      var triggerKey = context.Trigger.Key;//獲取trigger信息

      LogHelper.Info($"{DateTime.Now} QuartzJob:==>>自動執(zhí)行.{jobKey.Name}|{triggerKey.Name}");
      await Task.CompletedTask;
    }
  }

ps：上面代碼中的jobKey和triggerKey可獲取到自己定義的job和trigger的信息，這樣做多任務(wù)時可區(qū)分要執(zhí)行的是哪個任務(wù). 另LogHelper.Info是自己封裝好的日子記錄類，可替換為自己的日志類

（2）新建QuartzFactory類，代碼如下：

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類，代碼如下：

#region 單任務(wù)
    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 多任務(wù)
    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中注冊代碼

public void ConfigureServices(IServiceCollection services)
{
      services.AddQuartz(typeof(QuartzJob));

      //........
}


public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
  QuartzService.StartJobs<QuartzJob>();
  //........
}

ps: 因AddQuartz方法定義的是Type[]類型，所以可傳多個執(zhí)行類，如：services.AddQuartz(typeof(QuartzJob1), typeof(QuartzJob2)); 不過這樣做StartJob()方法就得另處理下，這里就略過

OK，大功告成，這個東西折騰了兩天終于塵埃落定了，執(zhí)行結(jié)果如下：

.net core中Quartz的使用方法