用邮政在hangfire发送邮件

Question

我正在使用hangfire和使用autofac的DI。我想与postal.mvc5工具发送电子邮件，我得到这个错误：

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 

我寻找2天，并没有发现这个问题。请帮帮我！由于

Answer 1

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

从上面的链接解释。您不能使用Viewbag或模板在httpcontext外部发送电子邮件。您必须使用型号代替Viewbag和嵌入式图像不是也可以（参考http://aboutcode.net/postal/outside-aspnet.html）

对于嵌入式图像，您可以通过模型，在这里看到更多的解释https://github.com/andrewdavey/postal/issues/44