问题：
使用 Quartz.Net 做定时任务时，实现IJob对象的服务，Autofac不会自动注入，使用构造函数会直接出现异常，无法执行Execute方法。
解决方式
方法一： 使用 Autofac的Quartz.Net的扩展包
Gitbub地址： https://github.com/alphacloud/Autofac.Extras.Quartz
使用方法：
1、需要下载Autofac的扩展包，可以通过Nuget包管理工具下载
Autofac.Extras.Quartz
2、在Autofac配置文件中注册Quartz模块
//注册定时任务模块builder.RegisterModule(new QuartzAutofacFactoryModule());builder.RegisterModule(new QuartzAutofacJobsModule(typeof(JobTest).Assembly));
3、然后在Job任务对象中，就可以通过构造函数注入服务对象。
方法二：
因我本机的项目使用的Autofac是3.5版本，如果安装Autofac.Extras.Quartz，需要升级Autofac版本，要么用很旧的版本，方法一并不友好。
首先，在mvc根目录下新建Autofac扩展类：
1 ??internal static ?class AutofacExt 2 ????{ 3 ????????private static IContainer _container; 4 ????????public static void InitAutofac() 5 ????????{ 6 ????????????var builder = new ContainerBuilder(); 7 ?8 ????????????//注册数据库基础操作和工作单元 9 ????????????builder.RegisterGeneric(typeof(BaseRepository<>)).As(typeof(IRepository<>));10 ????????????builder.RegisterType(typeof (UnitWork)).As(typeof (IUnitWork));11 12 ????????????//注册WebConfig中的配置13 ????????????builder.RegisterModule(new ConfigurationSettingsReader("autofac"));14 15 ????????????//注册app层16 ????????????builder.RegisterAssemblyTypes(Assembly.GetAssembly(typeof (UserManagerApp)));17 18 ????????????//注册领域服务19 ????????????builder.RegisterAssemblyTypes(Assembly.GetAssembly(typeof(AuthoriseService)));20 21 ????????????????// Register your MVC controllers.22 ????????????builder.RegisterControllers(typeof(MvcApplication).Assembly);23 24 ????????????// OPTIONAL: Register model binders that require DI.25 ????????????builder.RegisterModelBinders(Assembly.GetExecutingAssembly());26 ????????????builder.RegisterModelBinderProvider();27 28 ????????????// OPTIONAL: Register web abstractions like HttpContextBase.29 ????????????builder.RegisterModule<AutofacWebTypesModule>();30 31 ????????????// OPTIONAL: Enable property injection in view pages.32 ????????????builder.RegisterSource(new ViewRegistrationSource());33 34 ????????????// OPTIONAL: Enable property injection into action filters.35 ????????????builder.RegisterFilterProvider();36 37 ????????????// Schedule38 ????????????builder.Register(x => new StdSchedulerFactory().GetScheduler()).As<IScheduler>();39 40 ????????????// Schedule jobs41 ????????????builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly()).Where(x => typeof(IJob).IsAssignableFrom(x));42 ????????????43 ????????????// Set the dependency resolver to be Autofac.44 ????????????_container = builder.Build();45 ????????????DependencyResolver.SetResolver(new AutofacDependencyResolver(_container));46 47 ????????????IScheduler sched = AutofacExt.GetFromFac<IScheduler>();48 ????????????sched.JobFactory = new AutofacJobFactory(_container);49 50 51 ????????????IJobDetail job = JobBuilder.Create<TimeJob>()52 ????????????????????.WithIdentity("job1", "group1")53 ????????????????????.Build();54 55 ????????????ITrigger trigger = TriggerBuilder.Create()56 ????????????????.WithIdentity("1JobTrigger")57 ????????????????.WithSimpleSchedule(x => x58 ????????????????????.RepeatForever()59 ????????????????????.WithIntervalInSeconds(5)60 ????????????????)61 ????????????????.StartNow()62 ????????????????.Build();63 64 ????????????sched.ScheduleJob(job, trigger);65 ????????????sched.Start();66 ????????}67 68 ????????/// <summary>69 ????????/// 从容器中获取对象70 ????????/// </summary>71 ????????/// <typeparam name="T"></typeparam>72 ????????public static T GetFromFac<T>()73 ????????{74 ????????????return _container.Resolve<T>();75 ????????}76 ????} 1 ???public class AutofacJobFactory : IJobFactory 2 ????{ 3 ????????private readonly IContainer _container; 4 ????????public AutofacJobFactory(IContainer container) 5 ????????{ 6 ????????????_container = container; 7 ????????} 8 ????????public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler) 9 ????????{10 ????????????return (IJob)_container.Resolve(bundle.JobDetail.JobType);11 ????????}12 13 ????????public void ReturnJob(IJob job)14 ????????{15 ???????????16 ????????}17 ????}[DisallowConcurrentExecution] ???public class TimeJob : IJob ???{ ???????private LogManagerApp logManager; ???????public TimeJob() ???????{ ???????????logManager = AutofacExt.GetFromFac<LogManagerApp>(); ???????} ???????public void Execute(IJobExecutionContext context) ???????{ ???????????// ???????} ????}在Application_Start()里添加这段代码即可： AutofacExt.InitAutofac();
AutofacExt.InitAutofac();
参考资料：
Quartz.Net 与 Autofac 自动注入 的整合问题
如何创建一个Quartz.NET的工作，需要注射autofac
如何创建一个Quartz.NET的工作，需要注射autofac
原文地址：http://www.cnblogs.com/riddly/p/7976679.html