Identity Server 4 日志（无效的对象名称“DeviceCodes”）异常答案

【问题标题】：Identity Server 4 loggs (Invalid object name 'DeviceCodes') exceptionIdentity Server 4 日志（无效的对象名称“DeviceCodes”）异常
【发布时间】：2020-07-18 12:39:42
【问题描述】：

我们正在使用 Identity Server 4 进行身份验证。在将我们的解决方案从 .Net Core 2.0 升级到 .Net Core 3.1 后，我们开始注意到当客户端重定向到我们的身份验证 URL 时会记录一个新异常，这并没有影响该过程，最终用户似乎一切正常。例外是：

An exception occurred while iterating over the results of a query for context type 'IdentityServer4.EntityFramework.DbContexts.PersistedGrantDbContext'.
Microsoft.Data.SqlClient.SqlException (0x80131904): Invalid object name 'DeviceCodes'.
   at Microsoft.Data.SqlClient.SqlCommand.<>c.<ExecuteDbDataReaderAsync>b__164_0(Task`1 result)
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.AsyncEnumerator.InitializeReaderAsync(DbContext _, Boolean result, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.ExecuteAsync[TState,TResult](TState state, Func`4 operation, Func`4 verifySucceeded, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.AsyncEnumerator.MoveNextAsync()
ClientConnectionId:2b07bb46-18fe-4553-a79f-89b0186556d4
Error Number:208,State:1,Class:16

导致此异常的查询：

Failed executing DbCommand (2ms) [Parameters=[@__p_0='?' (DbType = Int32)], CommandType='Text', CommandTimeout='30']
SELECT [d].[UserCode], [d].[ClientId], [d].[CreationTime], [d].[Data], [d].[DeviceCode], [d].[Expiration], [d].[SubjectId]
FROM [DeviceCodes] AS [d]
WHERE [d].[Expiration] < GETUTCDATE()
ORDER BY [d].[DeviceCode]

我们的上下文中没有此表“DeviceCodes”，请提供任何建议！

【问题讨论】：

标签： authentication asp.net-core exception client-server identityserver4

【解决方案1】：

您缺少 DeviceCodes 表，您将通过从包管理器控制台窗口添加迁移获得（现在您已升级），如下所示：

add-migration Core3Upgrade -Context PersistedGrantDbContext

（记得根据你的设置在VS中设置正确的Startup项目，在Package Manager Console中设置相应的Default项目，否则会失败。）

然后……

update-database -Context PersistedGrantDbContext

（或运行任何初始化代码，您可能会使用这些代码来为您的身份验证数据库播种/应用迁移）

如果成功，应该执行以下 SQL：

  Executed DbCommand (27ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
  CREATE TABLE [DeviceCodes] (
      [UserCode] nvarchar(200) NOT NULL,
      [DeviceCode] nvarchar(200) NOT NULL,
      [SubjectId] nvarchar(200) NULL,
      [ClientId] nvarchar(200) NOT NULL,
      [CreationTime] datetime2 NOT NULL,
      [Expiration] datetime2 NOT NULL,
      [Data] nvarchar(max) NOT NULL,
      CONSTRAINT [PK_DeviceCodes] PRIMARY KEY ([UserCode])
  );

【讨论】：