尝试从Azure检索数据时MobileServiceInvalidOperationException

这是我正在使用的方法。

try { List pList = await App.MobileService.GetTable().Where( patient => patient.id == 1).ToListAsync(); foreach (Patient p in pList) { System.Diagnostics.Debug.WriteLine("{0}, {1}", p.id, p.first_name); } } catch (Exception err) { System.Diagnostics.Debug.WriteLine("ERROR! : {0}", err.Message); } 

这是患者实体。

 class Patient { public int id { get; set; } public string first_name { get; set; } public string last_name { get; set; } public string middle_name { get; set; } public string nirc { get; set; } public int bed_id { get; set; } } 

这是我得到的错误。

 An exception of type 'System.Net.WebException' occurred in System.Windows.ni.dll and wasn't handled before a managed/native boundary An exception of type 'System.Net.WebException' occurred in System.Windows.ni.dll and wasn't handled before a managed/native boundary An exception of type 'System.Net.WebException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary An exception of type 'Newtonsoft.Json.JsonReaderException' occurred in Newtonsoft.Json.DLL and wasn't handled before a managed/native boundary An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in Microsoft.Azure.Zumo.WindowsPhone8.Managed.DLL and wasn't handled before a managed/native boundary An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary A first chance exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary 

当我在TryCatch中包装我的方法时，我收到此消息

 Error : The request could not be completed. () 

这是堆栈错误消息

  at Microsoft.WindowsAzure.MobileServices.MobileServiceClient.CreateMobileServiceException(String errorMessage, IServiceFilterRequest request, IServiceFilterResponse response) at Microsoft.WindowsAzure.MobileServices.MobileServiceClient.ThrowInvalidResponse(IServiceFilterRequest request, IServiceFilterResponse response, JToken body) at Microsoft.WindowsAzure.MobileServices.MobileServiceClient.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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at Microsoft.WindowsAzure.MobileServices.MobileServiceTable.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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at Microsoft.WindowsAzure.MobileServices.MobileServiceTable`1.d__3`1.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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at Microsoft.WindowsAzure.MobileServices.MobileServiceTableQuery`1.d__2.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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at PhoneApp1.MainPage.d__0.MoveNext() 

有几点需要注意。

1. Anybody with the Application Key将权限设置为Anybody with the Application Key
2. 我添加了对Windows Azure Mobile Services Managed Client引用
3. 我已经在App.XAML.CS中插入了这段代码。 using Microsoft.WindowsAzure.MobileServices;
4. 我已经在App.XAML.CS中放置了从这个网站获得的这段代码。
   public static MobileServiceClient MobileService = new MobileServiceClient( AppUrl, AppKey );

为什么我无法连接到我的数据库？ 我已经尝试在Windowsapp store应用程序上运行这些代码，但它确实有效。 以前我做过完全相同的事情，它也有效。

Answer 1

这个链接救了我。

显然，我所要做的就是将服务地址从https更改为http 。 所以不是这样，

 public static MobileServiceClient MobileService = new MobileServiceClient( "https://www.example.azure-mobile.net/", "fjkdslajkfdlsref31321fgdsat34ajklfdslajfkldsa" ); 

将其更改为

 public static MobileServiceClient MobileService = new MobileServiceClient( "http://www.example.azure-mobile.net/", "fjkdslajkfdlsref31321fgdsat34ajklfdslajfkldsa" ); 

问题解决了。

Answer 2

检查计算机或设备上的日期/时间。 在我的情况下，我已经打开了已经关闭一段时间的开发电话，日期/时间完全错误。 虽然将端点从HTTPS更改为HTTP确实解决了这个问题，但对我来说，正确的解决方案是保留HTTPS并修复设备上的日期/时间。

Answer 3

我在Android设备中解决了这个问题。 您将需要终止您的应用实例，将系统日期/时间更改为当前并重新打开该应用。

谢谢Nathanial Woolls !!!

Answer 4

我不能发表评论，因为我的声誉很低，我遇到了同样的问题，但这是不一致的。

如果我尝试使用我的应用程序上的注册页面访问Azure移动服务，有时它会超时相同的错误（“请求无法完成。（）”），然后如果我立即再次尝试它工作正常。

我正在使用一个真正的Windows Phone设备，它使用我的iPhone热点提供的Wi-Fi连接，实际上是4G，所以肯定没有连接问题。

我读过其他文章，说没有必要尝试检查互联网连接是否可用，只是尝试发送数据并处理任何问题。 我处理这个问题，但问题不应该发生。

你有没有遇到任何问题？

我尝试过使用https和http作为MobileService连接，似乎没什么区别。

Answer 5

如果其他人碰到这个，我只是简单地将一个带有错误子域的URL传递给MobileServiceClient时遇到了同样的问题。

例如，像这样：

 public static MobileServiceClient MobileService = new MobileServiceClient( "http://www.example.azure-mobile.net/", "fjkdslajkfdlsref31321fgdsat34ajklfdslajfkldsa" ); 

Answer 6

确保此function也已关闭。