我发现FormsAuthentication.SetAuthCookie
抛出一个NullReferenceException - 对象引用不设置到上一个蓝色的网站异步操作内部的对象的实例。
我发现以下几点:
不过我已经有
<appSettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
设置和我的代码工作正常,当我部署到Azure本地我只遇到问题。我使用Azure的网站(https://www.windowsazure.com/en-us/home/scenarios/web-sites/),这是我的理解,这里使用的Web.config是否正常?我也试图通过Azure的控制面板添加appsetting
并加入.ConfigureAwait(false);
我期待已久的方法,但有没有运气。
下面的代码会抛出异常
public class TestController : Controller
{
public async Task<ActionResult> Index()
{
var httpResponse = await new HttpClient().GetAsync("http://www.google.com");
FormsAuthentication.SetAuthCookie("test", true);
return View();
}
}
任何人都知道我能得到这个工作?
更新:
堆栈跟踪:
[NullReferenceException: Object reference not set to an instance of an object.]
System.Threading.Tasks.<>c__DisplayClass1c.<GetRethrowWithNoStackLossDelegate>b__1b(Task task) +91
System.Threading.Tasks.TaskHelpersExtensions.ThrowIfFaulted(Task task) +15
System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +77
System.Web.Mvc.Async.<>c__DisplayClass3f.<BeginInvokeAsynchronousActionMethod>b__3e(IAsyncResult asyncResult) +16
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +29
System.Web.Mvc.Async.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() +59
System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +240
System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) +12
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +31
System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +23
System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +128
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +26
System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +14
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +55
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +41
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +55
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +28
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__4(IAsyncResult asyncResult) +28
System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +55
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +31
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +23
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +59
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +96
UPDATE
我发现它的工作原理,如果手动设置cookie
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, "test", DateTime.Now, DateTime.Now.AddMinutes(30), true, null, FormsAuthentication.FormsCookiePath);
string encTicket = FormsAuthentication.Encrypt(ticket);
Response.Cookies.Add(new HttpCookie(FormsAuthentication.FormsCookieName, encTicket));
我不会回答这个问题,虽然是想知道为什么FormsAuthentication.SetAuthCookie
抛出异常以及为何表现不同Azure上的网站
这个问题不是特定于Azure的 - 方法FormsAuthentication.SetAuthCookie将抛出一个空引用异常在异步操作时FormsAuthentication.SetAuthCookie被调用之前被称为等待声明。
最简单的解决方法是使用以下命令:
Response.Cookies.Add(FormsAuthentication.GetAuthCookie("user-1", true));
另一种方法是给自己指定票创作:
var ticket = new FormsAuthenticationTicket(
2,
"user-1",
DateTime.Now,
DateTime.Now.AddDays(2),
true,
String.Empty,
"/");
var encTicket = FormsAuthentication.Encrypt(ticket);
Response.Cookies.Add(new HttpCookie(".AUTH", encTicket));
你也可以改变这种方式,它给你
public ActionResult Index()
{
var t1 = Task.Run(() => HttpClient().GetAsync("http://www.google.com"));
t1.Wait();
FormsAuthentication.SetAuthCookie("test", true);
return View();
}
这样的工作,我和我的想法得到了从GlennMorton 1回答
谢谢。
在目前,.NET 4.5在Windows Azure网站支持。您将需要降级的项目.NET 4.0这也将意味着你将需要重写代码,不使用异步。
你可以尝试仓部署由应用程序所需的.NET 4.5组件