Asp.net core 依赖项注入.Net调度程序

我目前正在尝试使用quartz.net使用存储库更新数据库中的一些数据。 请记住，我使用的是ASP.NETCore3.1

我目前面临的问题是，当我在IJob的构造函数中注入我的IUserProjectRepository时，作业将无法执行，并且在Quartz DB实现中也会出现错误：

这就是我的

startup.cs

的样子：

 public void ConfigureServices(IServiceCollection services)
    {
      services.AddTransient<UserProjectStatusJob>();
      services.AddTransient(provider => GetScheduler().Result);
    }
....
    private async Task<IScheduler> GetScheduler()
    {
      NameValueCollection properties = new NameValueCollection
      {
        { "quartz.scheduler.instanceName", "Cliche" },
        { "quartz.scheduler.instanceId", "Cliche" },
        { "quartz.jobStore.type", "Quartz.Impl.AdoJobStore.JobStoreTX, Quartz" },
        { "quartz.jobStore.useProperties", "true" },
        { "quartz.jobStore.dataSource", "default" },
        { "quartz.jobStore.tablePrefix", "QRTZ_" },
        {
          "quartz.dataSource.default.connectionString",
          "connectionstring"
        },
        { "quartz.dataSource.default.provider", "SqlServer" },
        { "quartz.threadPool.threadCount", "1" },
        { "quartz.serializer.type", "json" },
      };
      
      
      var schedulerFactory = new StdSchedulerFactory(properties);
      var scheduler = await schedulerFactory.GetScheduler();
      await scheduler.Start();
      return scheduler;
    }

  public class UserProjectStatusJob : IJob
  {

    private IUserProjectRepository _userProjectRepository;
    public UserProjectStatusJob(IUserProjectRepository userProjectRepository)
    {
      this._userProjectRepository = userProjectRepository;
    }

    public Task Execute(IJobExecutionContext context)
    {
      try
      {
        JobDataMap dataMap = context.JobDetail.JobDataMap;
        string userProjectId = dataMap.GetString("userProjectId");
        string userProjectProjectId = dataMap.GetString("userProjectProjectId");
        _userProjectRepository.CloseUserProject(userProjectProjectId, userProjectId);
      }
      catch (Exception ex)
      {
        Console.WriteLine(ex);
      }


      return Task.FromResult(0);
    }
  }

我在相同的

UserProjectRepository

中创建作业：

 public class UserProjectRepository : IUserProjectRepository
  {
    private readonly ApplicationDbContext _dbContext;
    private readonly IFileService _fileService;
    private readonly INotificationRepository _notificationRepository;
    private readonly IScheduler _scheduler;

    public UserProjectRepository(ApplicationDbContext dbContext,
      IFileService fileService,
      INotificationRepository notificationRepository,
      IScheduler scheduler)
    {
      this._scheduler = scheduler;
      this._notificationRepository = notificationRepository;
      this._fileService = fileService;
      this._dbContext = dbContext;
    }


    public async Task CreateCronJobForUserProject(UserProject userProject)
    {
// Add Later in to startAt
      TimeSpan timeToTrigger = userProject.Project.Assignment.DeadLine - DateTime.Now;
      ITrigger trigger = TriggerBuilder.Create()
        .WithIdentity($"Check Availability-{DateTime.Now}")
        .StartAt(DateTime.Now.AddSeconds(15))
        .WithPriority(1)
        .Build();

      IDictionary<string, object> map = new Dictionary<string, object>()
      {
        {"userProjectId", $"{userProject.Id}" },
        {"userProjectProjectId", $"{userProject.ProjectId}" },
      };
      
      IJobDetail job = JobBuilder.Create<UserProjectStatusJob>()
        .WithIdentity($"Check Availability-{DateTime.Now}")
        .SetJobData(new JobDataMap(map))
        .Build();
      

        await this._scheduler.ScheduleJob(job, trigger);

    }
}

---

你有什么例外吗？如果是，请发布异常详细信息。不，不幸的是没有错误，作业没有执行，正如您在屏幕截图中看到的，触发器状态随后设置为错误。我编辑了我的帖子，我确实发现了一个错误。我找到了一个解决方案，我使用了Hangfire而不是Quartz…一个选择是使用官方的集成包来让注入工作，你有什么例外吗？如果是，请发布异常详细信息。不，不幸的是没有错误，作业没有执行，正如您在屏幕截图中看到的，触发器状态随后设置为错误。我编辑了我的帖子，我确实发现了一个错误。我找到了一个解决方案，我使用了Hangfire而不是Quartz…一个选择是使用官方的集成包来让注入工作正常，并且

[14:46:50 ERR] An error occurred instantiating job to be executed. job= 'DEFAULT.Check Availability-10/28/2020 14:46:35'
Quartz.SchedulerException: Problem instantiating class 'IKL.Data.Services.UserProjectStatusJob: Cannot instantiate type which has no empty constructor (Parameter 'UserProjectStatusJob')'
 ---> System.ArgumentException: Cannot instantiate type which has no empty constructor (Parameter 'UserProjectStatusJob')