Question

我在我的网络应用程序中连接到SQL服务器，在VS中进行调试时效果很好。

然而，在发布到Azure后，我看到了

访问被拒绝

连接字符串：

<add name="ADVWKSP01" connectionString="metadata=res://*/Models.ADVWKSP01.csdl|res://*/Models.ADVWKSP01.ssdl|res://*/Models.ADVWKSP01.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=SERVERNAME;initial catalog=ADVWKSP01;persist security info=True;user id=sql_user;password=password;MultipleActiveResultSets=True;App=EntityFramework&quot;"

我还尝试使用

在azure portal中设置连接字符串

metadata=res://*/Models.ADVWKSP01.csdl|res://*/Models.ADVWKSP01.ssdl|res://*/Models.ADVWKSP01.msl;provider=System.Data.SqlClient;provider connection string='data source=sgazrstgsql04v;initial catalog=ADVWKSP01;persist security info=True;user id=sql_user;password=password;MultipleActiveResultSets=True;App=EntityFramework'

但结果相同。

这怎么可能？为什么我的本地计算机可以连接，而不是Azure上的应用程序？

我还尝试使用我的Microsoft凭据登录（显然有访问权限）但是在创建EF连接时我在VS中收到了这条烦人的消息：

有人可以告诉我如何解决这个问题吗？

完整的错误消息：

[Win32Exception (0x80004005): Access is denied]

[SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)]
   System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling) +999
   System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) +800
   System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) +38
   System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) +739
   System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) +85
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +449
   System.Data.ProviderBase.DbConnectionPool.WaitForPendingOpen() +344
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.SqlServer.<<ExecuteAsync>b__3>d__6.MoveNext() +226
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.SqlServer.<ExecuteAsyncImplementation>d__9`1.MoveNext() +355
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.Core.EntityClient.<OpenAsync>d__8.MoveNext() +593

[EntityException: The underlying provider failed on Open.]
   System.Data.Entity.Core.EntityClient.<OpenAsync>d__8.MoveNext() +670
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.Core.Objects.<EnsureConnectionAsync>d__9.MoveNext() +444
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.Core.Objects.<ExecuteInTransactionAsync>d__3d`1.MoveNext() +259
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.SqlServer.<ExecuteAsyncImplementation>d__9`1.MoveNext() +364
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.Utilities.CultureAwaiter`1.GetResult() +59
   System.Data.Entity.Core.Objects.<GetResultsAsync>d__e.MoveNext() +638
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.Utilities.CultureAwaiter`1.GetResult() +59
   System.Data.Entity.Internal.<FirstMoveNextAsync>d__0.MoveNext() +259
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Data.Entity.Infrastructure.<ForEachAsync>d__5`1.MoveNext() +357
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   ADVWKSP.Controllers.<Index>d__5.MoveNext() in C:\Users\Bassie\source\repos\TFS\ADVWKSP\ADVWKSP\Controllers\CRMTItemsController.cs:92
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +61
   System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +97
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeAsynchronousActionMethod>b__36(IAsyncResult asyncResult) +17
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +32
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +50
   System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +228
   System.Web.Mvc.Async.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +34
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +26
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +100
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +13
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +36
   System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +12
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +22
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +21
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.InvokeEndHandler(IAsyncResult ar) +152
   System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +126

Answer 1

为什么我的本地计算机可以连接，而不是Azure上的应用程序？

在本地计算机上连接时，可以连接到本地sql数据库。在发布到azure时，您需要连接到您可能未配置的 azure sql数据库。

Windows Azure SQL数据库（以前称为SQL Azure）仅在 TCP端口1433 上运行。

为了成功建立与SQL Azure的连接，必须满足以下要求：

1.创建SQL Azure服务器＆amp;数据库

2.设置SQL Azure Server的防火墙规则以接受来自将连接到该服务器的应用程序的IP地址的连接

3.确保该框（无论是虚拟，家庭还是其他）没有阻止出站TCP端口1433

4.明确强制连接字符串中的加密

5.明确选择不信任连接字符串中的服务器证书

有关详细信息，请参阅此case。

另外，您可以参考此article进行问题排查。

我也尝试使用我的Microsoft凭据登录（显然有访问权限）但是在创建EF连接时我在VS中收到这条恼人的消息

您可以使用Encrypt = false或在连接字符串中添加以下内容：

TrustServerCertificate=True

Azure发布后访问被拒绝

1 个答案: