移动到 Web API RC，获取：找不到方法：'System.Web.Http.Services.DependencyResolver System.Web.Http.HttpConfigurat

Question

我将一个站点从WebAPI Beta移动到WebAPI RC，现在在加载站点时收到错误：Method not found: 'System.Web.Http.Services.DependencyResolver System.Web.Http.HttpConfiguration.get_ServiceResolver()'.

错误发生在我第一次尝试注册AutoFacWebApiDependencyResolver时（根据此处的说明）：

var resolver = new AutofacWebApiDependencyResolver(IoCManager.Container);
GlobalConfiguration.Configuration.DependencyResolver = resolver;

堆栈跟踪显示以下内容：

[MissingMethodException: Method not found: 'System.Web.Http.Services.DependencyResolver System.Web.Http.HttpConfiguration.get_ServiceResolver()'.]
   System.Web.Http.GlobalConfiguration.<.cctor>b__0() +0
   System.Lazy`1.CreateValue() [phone]
   System.Lazy`1.LazyInitValue() +355
   StatusBoard.Web.MvcApplication.RegisterDependencyInjection() in C:path-tp-appGlobal.asax.cs:125
   StatusBoard.Web.MvcApplication.Application_Start() in C:path-to-appGlobal.asax.cs:75

基于此，似乎在静态 GlobalConfiguration 类的初始化期间发生了错误。当我向下钻取到该类的源代码时，我看到以下内容：

private static Lazy<HttpConfiguration> _configuration = new Lazy<HttpConfiguration>((Func<HttpConfiguration>) (() =>
{
  local_0 = new HttpConfiguration((HttpRouteCollection) new HostedHttpRouteCollection(RouteTable.Routes));
  local_0.get_ServiceResolver().SetService(typeof (IBuildManager), (object) new WebHostBuildManager());
  return local_0;
}));
private static Lazy<HttpControllerDispatcher> _dispatcher = new Lazy<HttpControllerDispatcher>((Func<HttpControllerDispatcher>) (() => new HttpControllerDispatcher(GlobalConfiguration._configuration.Value)));
public static HttpConfiguration Configuration
{
  get
  {
    return GlobalConfiguration._configuration.Value;
  }
}

这里的第四行似乎是问题所在 - 它试图调用 HttpConfiguration 类中不再存在的 get_ServiceResolver（） 方法（可能应该DependncyResolver）。

这只是 WebAPI RC 的一个错误吗？有什么方法可以解决这个问题吗？还是我陷入了DLL/Nuget地狱（如果是这样，我该如何自拔）？

Answer 1

请确保包含正确的 nuget 包 （RC！），并在生成包的计算机上安装新的 mvc4rc。

Answer 2

依赖解析已在 RC 中完全重写。最好是卸载测试版 DLL，然后您的问题很可能会消失。

只需卸载Windows的"

卸载程序"中标记为"（捆绑）"的那个。