用郵政在hangfire發送郵件

Question

我正在使用hangfire和使用autofac的DI。我想與postal.mvc5工具發送電子郵件，我得到這個錯誤：

System.InvalidOperationException 

The request lifetime scope cannot be created because the HttpContext is not available. 

System.InvalidOperationException: The request lifetime scope cannot be created because the HttpContext is not available. 
    at Autofac.Integration.Mvc.RequestLifetimeScopeProvider.GetLifetimeScope(Action`1 configurationAction)  
    at Autofac.Integration.Mvc.AutofacDependencyResolver.get_RequestLifetimeScope() 
    at Autofac.Integration.Mvc.AutofacDependencyResolver.GetService(Type serviceType) 
    at System.Web.Mvc.BuildManagerViewEngine.DefaultViewPageActivator.Create(ControllerContext controllerContext, Type type) 
    at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) 
    at Postal.EmailViewRenderer.RenderView(IView view, ViewDataDictionary viewData, ControllerContext controllerContext, ImageEmbedder imageEmbedder) 
    at Postal.EmailViewRenderer.Render(Email email, String viewName) 
    at Postal.EmailService.Send(Email email) 
    at Postal.Email.Send() 
    at Store.Web.Controllers.HomeController.Test() in C:\Users\a\Documents\Visual Studio 2015\Projects\In\S.Web\Controllers\HomeController.cs:line 33 

我尋找2天，並沒有發現這個問題。請幫幫我！由於

Answer 1

http://docs.hangfire.io/en/latest/tutorials/send-email.html#installing-postal

從上面的鏈接解釋。您不能使用Viewbag或模板在httpcontext外部發送電子郵件。您必須使用型號代替Viewbag和嵌入式圖像不是也可以（參考http://aboutcode.net/postal/outside-aspnet.html）

對於嵌入式圖像，您可以通過模型，在這裏看到更多的解釋https://github.com/andrewdavey/postal/issues/44