我有一个.NET MVC项目,我正在项目中使用REST API的API控制器.项目中使用的身份验证基于OwinMiddleware.

OwinMiddleware中使用以下代码进行身份验证

 var authValue = context.Request.Headers["Authorization"];
 if (!string.IsNullOrEmpty(authValue) && (authValue.StartsWith("Basic ")))
  {
      authValue = authValue.Substring(6).Trim();
      authValue = Encoding.UTF8.GetString(Convert.FromBase64String(authValue));
      var credentials = authValue.Split(":".ToCharArray());
      var signInStatus = await _signinManager.PasswordSignInAsync(credentials[0], credentials[1], false, false);

          switch (signInStatus)
           {
             case Microsoft.AspNet.Identity.Owin.SignInStatus.Success:
                    var user = await _userManager.FindByNameAsync(credentials[0]);
                    var identity = await _signinManager.CreateUserIdentityAsync(user);
                    context.Request.User = new ClaimsPrincipal(identity);
                     await base.Next.Invoke(context);
                     break;

             default:
                   context.Response.StatusCode = 401;
// an aobject representing error
                   var res = GetResposeData() 
                   var format = GetResponseContentType(context.Request);
                   var data = ParseToString(res , format);
                   var dataByte = Encoding.UTF8.GetBytes(data);
                  context.Response.ContentType = GetContentType(format);
                  context.Response.Body.Write(dataByte, 0, dataByte.Length);
                   break;
             }

    }

在startup.cs中,我添加了以下代码

public void ConfigureAuth(IAppBuilder app)
    {
        app.CreatePerOwinContext(() => DependencyResolver.Current.GetService<CustomSignInManager>());
        app.CreatePerOwinContext(() => DependencyResolver.Current.GetService<CustomUserManager>());
        app.UseCookieAuthentication(new CookieAuthenticationOptions()
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            LoginPath = new PathString("/account/index"),
            Provider = new CookieAuthenticationProvider()
            {
                OnApplyRedirect = ctx =>
                {
                    ctx.Response.Redirect(ctx.RedirectUri);
                }
            }
        });
        app.UseAutofacMiddleware(AutofacConfig.Container);
    }

当我使用postman持续调用API时,发现了以下响应

无法得到任何回应.
连接到baseUrl / api / User？pageNumber = 1& pageSize = 500时出错.
为什么会发生这种情况：
服务器无法发送响应：
确保后端正常工作
自签名SSL证书被阻止：
通过在设置>中关闭“SSL证书验证”来解决此问题.一般
代理配置不正确
确保在设置>中正确配置了代理.代理
请求超时：
在设置中更改请求超时>一般

以下是Windows事件日志中的一些例外情况.

Event code: 3005 Event message: An unhandled exception has occurred.
Event time: 2/14/2019 7:04:10 PM Event time (UTC): 2/14/2019 8:04:10
AM Event ID: 22548ff89e3744adbfd5c3e2b3b66ef4 Event sequence: 5
Event occurrence: 1 Event detail code: 0 Application information:
Application domain: /LM/W3SVC/1/ROOT/XYZ-2-131946050074629312
Trust level: Full
Application Virtual Path: /XYZ
Application Path: C:\inetpub\wwwroot\xyz\
Machine name: ABC Process information:
Process ID: 15228
Process name: w3wp.exe
Account name: IIS APPPOOL\DefaultAppPool Exception information:
Exception type: HttpException
Exception message: Server cannot append header after HTTP headers have been sent. at System.Web.HttpHeaderCollection.SetHeader(String
name, String value, Boolean replace) at
Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.Set(String
key, String[] values) at
Microsoft.Owin.Infrastructure.OwinHelpers.AppendHeaderUnmodified(IDictionary2
headers, String key, String[] values) at
Microsoft.Owin.Infrastructure.ChunkingCookieManager.AppendResponseCookie(IOwinContext
context, String key, String value, CookieOptions options) at
Microsoft.Owin.Security.Cookies.CookieAuthenticationHandler.<ApplyResponseGrantAsync>d__f.MoveNext()
--- End of stack trace from previous location where exception was thrown --- at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.Owin.Security.Infrastructure.AuthenticationHandler.<ApplyResponseCoreAsync>d__b.MoveNext()
--- End of stack trace from previous location where exception was thrown --- at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.Owin.Security.Infrastructure.AuthenticationHandler.<ApplyResponseAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown --- at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.Owin.Security.Infrastructure.AuthenticationHandler.<TeardownAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown --- at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.Owin.Security.Infrastructure.AuthenticationMiddleware1.d__0.MoveNext()
— End of stack trace from previous location where exception was thrown — at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.AspNet.Identity.Owin.IdentityFactoryMiddleware2.<Invoke>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown --- at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.AspNet.Identity.Owin.IdentityFactoryMiddleware2.d__5.MoveNext()
— End of stack trace from previous location where exception was thrown — at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContextStage.d__5.MoveNext()
— End of stack trace from previous location where exception was thrown — at
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task
task) at
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task
task) at
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.d__2.MoveNext()
— End of stack trace from previous location where exception was thrown — at
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at
Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.EndFinalWork(IAsyncResult
ar) at
System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step,
Boolean& completedSynchronously)

API控制器具有以下代码以返回响应

   // create new response
// format can be json or xml
            var response = new HttpResponseMessage()
            {
                Content = new StringContent(data, Encoding.UTF8, format),
                StatusCode = httpStatus
            };

            //if last modified available
// some date value
            if (lastUpdated != null)
                response.Content.Headers.LastModified = lastUpdated; 

            return response;

最佳答案 您混淆了webapi和MVC身份验证.将您的代码startup.cs更改为以下内容：

public void ConfigureAuth(IAppBuilder app)
    {
        app.CreatePerOwinContext(() => DependencyResolver.Current.GetService<CustomSignInManager>());
        app.CreatePerOwinContext(() => DependencyResolver.Current.GetService<CustomUserManager>());
        app.MapWhen((context) => {
                return !IsApiRequest(context.Request);                
            }, (mvcApp) => {
                mvcApp.UseCookieAuthentication(new CookieAuthenticationOptions()
                {
                    AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                    LoginPath = new PathString("/account/index"),
                    Provider = new CookieAuthenticationProvider()
                });
            });
        app.UseAutofacMiddleware(AutofacConfig.Container);
    }