我收到错误:
“无法创建请求生命周期范围,因为HttpContext 不可用。“
如果我尝试设置我的网络API。
HttpContext在System.Web.Http.SelfHost中不可用,但有替代方法吗?
我的AuthenticationHandler示例:
public class AuthenticationHandler : DelegatingHandler
{
private const string m_AuthenticationScheme = "Basic";
protected override System.Threading.Tasks.Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
AuthenticationHeaderValue authenticationHeader = request.Headers.Authorization; //get the authorization header
if (authenticationHeader != null && authenticationHeader.Scheme == m_AuthenticationScheme)
{
Credentials credentials = authenticationHeader.ParseAuthenticationHeader();
if (credentials != null)
{
IMyClass procadCredentials = DependencyResolver.Current.GetService<IMyClass>(); //thows the InvalidOperationException if I use self-hosting
//tried: "Autofac.Integration.Mvc.AutofacDependencyResolver.Current.RequestLifetimeScope.Resolve<IMyClass>();" too.
我收到了带有消息的InvalidOperationException:
由于HttpContext,无法创建请求生存期范围 不可用。
IMyClass在global.asax中注册如下:
m_builder.Register<IMyClass>((c, p) =>
{
//...
//return ...
}
虽然IIS-Hosting,它运行正常,但使用自托管,IoC与AutoFac失败。
答案 0 :(得分:0)
您正在使用Autofac的MVC集成包与Web API,而您应该真正使用Autofac.WebApi
http://nuget.org/packages/Autofac.WebApi
您可以在此处阅读更多相关信息 - http://alexmg.com/post/2012/09/01/New-features-in-the-Autofac-MVC-4-and-Web-API-(Beta)-Integrations.aspx