MySqlConnection打开失败，访问被拒绝，即使模仿

Question

我的类库无法使用MySql .net连接器建立一个mysql连接。如果通过使用类库的命令行控制台应用运行它，它可以连接。但是当我使用PHP COM加载/运行.net程序集时，它失败了。类库具有模拟代码来模拟用户。为了测试，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需要哪些凭据？ 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

cacls "C:\Windows\Microsoft.NET\Framework\v2.0.50727\Config\machine.config"在命令提示符将显示谁/什么对这个文件的权限。您也想要验证文件上方所有目录的访问权限。