使用postal在hangfire中发送电子邮件

Question

我使用的是hangfire，DI使用的是autofac。我想使用postal.mvc5工具发送电子邮件，但收到以下错误：

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

我搜索了2天，没有找到关于这个问题的任何东西。请帮帮我!谢谢

Answer 1

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

从上面的链接中解释。您不能使用Viewbag或template在httpcontext之外发送电子邮件。您必须使用模型而不是Viewbag，嵌入的图像也不能使用(请参阅http://aboutcode.net/postal/outside-aspnet.html)

对于嵌入的图像，您可以通过模型传递，请参阅此处以获得更多解释https://github.com/andrewdavey/postal/issues/44