Question

我正在尝试创建一个简单的Hangfire测试，但它无法正常工作。这是所有重要的代码，以及我如何使用Hangire.Autofac配置它。不知道我在这里缺少什么。我在/ hangfire dashbaord中遇到的例外也在下面。

public class AmazonSqsService : IAmazonSqsService
{
    private readonly IBackgroundJobClient _backgroundJobClient;
    private readonly ILogService _logService;

    public AmazonSqsService(IBackgroundJobClient backgroundJobClient, ILogService logService) 
    {

        _backgroundJobClient. = backgroundJobClient;
        _logService= logService;
    }

    public async Task<string> Test()
    {

        return _backgroundJobClient.Enqueue(() => Looper());

    }

    public void Looper() {
        while (true) { _logService.Info("In Looper Loop"); Thread.Sleep(5000); } 
    } 
}

 public partial class Startup
{
    public static IContainer ConfigureContainer()
    {
        var builder = new ContainerBuilder();
        RegisterApplicationComponents(builder);
        AppGlobal.Container = builder.Build();
    }

    public static void RegisterApplicationComponents(ContainerBuilder builder)
    {
        builder.RegisterType<LogService>().As<ILogService>().InstancePerLifetimeScope();
        builder.RegisterType<AmazonSqsService>().As<IAmazonSqsService>().InstancePerLifetimeScope();
        builder.RegisterType<BackgroundJobClient>().As<IBackgroundJobClient>().InstancePerLifetimeScope();
        builder.Register(c => JobStorage.Current).As<JobStorage>().InstancePerLifetimeScope();
        builder.Register(c => new StateMachineFactory(JobStorage.Current)).As<IStateMachineFactory>().InstancePerLifetimeScope();

    }

    public static void ConfigureHangfire(IAppBuilder app) 
    {
        app.UseHangfire(config =>
        {
            config.UseAutofacActivator(AppGlobal.Container);
            config.UseSqlServerStorage("DefaultDatabase");
            config.UseServer();
        });
    }
}

但是在仪表板中，我不断收到此任务的错误：

失败作业激活期间发生异常。   Autofac.Core.Registration.ComponentNotRegisteredException

请求的服务'App.Services.AmazonSqsService'尚未注册。要避免此异常，请注册组件以提供服务，使用IsRegistered（）检查服务注册，或使用ResolveOptional（）方法解析可选依赖项。

Answer 1

最终想出来了。

正确用法：

public class Service : IService {
      public void MethodToQueue() { ... }
}

public class AnyOtherClass {
     public void StartTasks() {
          BackgroundJob.Enqueue<IService>(x => x.MethodToQueue()); //Good
     } 
}

使用不正确（我做错了什么）

public class Service : IService {
     public void StartTasks() {
          BackgroundJob.Enqueue(() => this.MethodToQueue()); //Bad
     } 

      public void MethodToQueue() { ... }
}

public class AnyOtherClass {
     public AnyOtherClass(IService service) {
          service.StartTasks();
     }
}

Hangfire.Autofac与MVC应用程序 - 注入失败

1 个答案: