MySqlConnection 打开失败，即使模拟也拒绝访问

Question

我的类库无法使用 MySql .net 连接器建立 mysql 连接。如果我通过使用类库的命令行控制台应用程序运行它，它可以连接。但当我使用 PHP COM 加载/运行 .net 程序集时，它失败了。类库具有模拟用户的模拟代码。为了进行测试，我模拟了我自己的用户帐户。

查看堆栈跟踪。访问 C:\Windows\Microsoft.NET\Framework\v2.0.50727\Config\machine.config 需要什么凭据？ 在 .NET 程序集中模拟的正确代码是什么（它也是 COM 感知的）？

2011/08/17 10:11:52.653 AM - The type initializer for 'System.Transactions.Diagnostics.DiagnosticTrace' threw an exception.
2011/08/17 10:11:52.653 AM -    at System.Transactions.Transaction.get_Current()
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at MineForums.Miner.Process(Int32 forumId, String mineDirectory)
2011/08/17 10:11:52.653 AM - Configuration system failed to initialize
2011/08/17 10:11:52.653 AM -    at System.Transactions.Transaction.get_Current()
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at MineForums.Miner.Process(Int32 forumId, String mineDirectory)
2011/08/17 10:11:52.965 AM - System.TypeInitializationException: The type initializer for 'System.Transactions.Diagnostics.DiagnosticTrace' threw an exception. ---> System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: An error occurred loading a configuration file: Access is denied.
 (C:\Windows\Microsoft.NET\Framework\v2.0.50727\Config\machine.config) ---> System.Security.SecurityException: Access is denied.

   at System.Security.Principal.WindowsImpersonationContext.Undo()
   at System.Security.Principal.WindowsImpersonationContext.Dispose(Boolean disposing)
   at System.Security.Principal.WindowsImpersonationContext.Dispose()
   at System.Configuration.BaseConfigurationRecord.InitConfigFromFile()
The Zone of the assembly that failed was:
MyComputer
   --- End of inner exception stack trace ---
   at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors)
   at System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors()
   at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
   --- End of inner exception stack trace ---
   at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
   at System.Configuration.ClientConfigurationSystem.PrepareClientConfigSystem(String sectionName)
   at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String sectionName)
   at System.Configuration.ConfigurationManager.GetSection(String sectionName)
   at System.Configuration.PrivilegedConfigurationManager.GetSection(String sectionName)
   at System.Diagnostics.DiagnosticsConfiguration.GetConfigSection()
   at System.Diagnostics.DiagnosticsConfiguration.Initialize()
   at System.Diagnostics.DiagnosticsConfiguration.get_Sources()
   at System.Diagnostics.TraceSource.Initialize()
   at System.Diagnostics.TraceSource.get_Switch()
   at System.Transactions.Diagnostics.DiagnosticTrace..cctor()
   --- End of inner exception stack trace ---
   at System.Transactions.Transaction.get_Current()
   at MySql.Data.MySqlClient.MySqlConnection.Open()
   at MineForums.Miner.Process(Int32 forumId, String mineDirectory)

Answer 1

在命令提示符处 cacls "C:\Windows\Microsoft.NET\Framework\v2.0.50727\Config\machine.config" 将显示谁/什么对该文件具有权限。您还想验证文件上方所有目录的访问权限。