首页 \ 问答 \ System.Data.SqlClient.SqlException：用户'...'登录失败(System.Data.SqlClient.SqlException: login failed for user '…')

System.Data.SqlClient.SqlException：用户'...'登录失败(System.Data.SqlClient.SqlException: login failed for user '…')

 我没有使用集成安全性。 我在网上看了这个问题并尝试解决错误。 到目前为止没有任何工作或解决它。 它在visual studio中不适用于iis和debug。 这是我得到的错误： 
 

 详细信息van uitzondering： System.Data.SqlClient.SqlException：用户'.....'登录失败。 
 

 支气管： 
 

Regel 7:    {
Regel 8:        SqlConnection myconnection = new SqlConnection(ConnectionClass.cnnConnectionVacature);
Regel 9:        myconnection.Open();
Regel 10: 
Regel 11:       //het laten zien van ingevoerde database gegevens 

 

 Bronbestand： c：\ inetpub \ wwwroot \ Vacaturesite \ start.aspx.cs Regel：9 
 

 Stacktracering： 
 

[SqlException (0x80131904): Login failed for user 'BPVICTwebuser'.]
   System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5340655
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +244
   System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1691
   System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +69
   System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +30
   System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) +317
   System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) +891
   System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) +307
   System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData) +518
   System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) +278
   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) +732
   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) +1057
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +78
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +196
   System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +146
   System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +16
   System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +94
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +110
   System.Data.SqlClient.SqlConnection.Open() +96
   Start.Page_Init(Object sender, EventArgs e) in c:\inetpub\wwwroot\Vacaturesite\start.aspx.cs:9
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnInit(EventArgs e) +92
   System.Web.UI.Page.OnInit(EventArgs e) +12
   System.Web.UI.Control.InitRecursive(Control namingContainer) +134
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +489

 

 这里是一些代码： 
 

public static string cnnConnectionVacature
{
    get { return @"Data Source=SX047H\SQLEXPRESS;Initial Catalog=BPVICT_vacature;User ID=...;Password=..."; }
}


I use no Integrated Security. I've looked this problem up online and tried solving the error. So far nothing worked or solved it. It doesn't work with both iis and debug in visual studio. This is the error I'm getting:
 

Details van uitzondering: System.Data.SqlClient.SqlException: Login failed for user '.....'.
 

Fout in bron: 
 

Regel 7:    {
Regel 8:        SqlConnection myconnection = new SqlConnection(ConnectionClass.cnnConnectionVacature);
Regel 9:        myconnection.Open();
Regel 10: 
Regel 11:       //het laten zien van ingevoerde database gegevens 

 

Bronbestand: c:\inetpub\wwwroot\Vacaturesite\start.aspx.cs Regel: 9 
 

Stacktracering: 
 

[SqlException (0x80131904): Login failed for user 'BPVICTwebuser'.]
   System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5340655
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +244
   System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1691
   System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +69
   System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +30
   System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) +317
   System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) +891
   System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) +307
   System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData) +518
   System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) +278
   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) +732
   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) +1057
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +78
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +196
   System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +146
   System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +16
   System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +94
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +110
   System.Data.SqlClient.SqlConnection.Open() +96
   Start.Page_Init(Object sender, EventArgs e) in c:\inetpub\wwwroot\Vacaturesite\start.aspx.cs:9
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnInit(EventArgs e) +92
   System.Web.UI.Page.OnInit(EventArgs e) +12
   System.Web.UI.Control.InitRecursive(Control namingContainer) +134
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +489

 

here is some of the code: 
 

public static string cnnConnectionVacature
{
    get { return @"Data Source=SX047H\SQLEXPRESS;Initial Catalog=BPVICT_vacature;User ID=...;Password=..."; }
}


原文：https://stackoverflow.com/questions/28210615
更新时间：2022-11-01 21:11

最满意答案

 性能基本相同，因为在两种情况下都会发生基本相同的事情。 例如，在UNIX / Linux平台上： 
 

     
 
  •  当前流程是“分叉”的。 
    •  
 
  •  新的子进程'exec'是'java'命令，传递指定的命令行参数。 
    •  
 
  •  子JVM启动...... 
    •  

 

 可能存在次要性能差异。 例如，父母处理孩子的标准输入/输出/错误流的方式可能不同。 但通常你会忘记这种事情。 
 

 [正如@Amadan指出的那样，使用类加载器在当前JVM中启动Java应用程序效率要高得多......因为它避免了JVM启动的开销，JIT编译公共代码等等。但主要的缺点是（除了简单）是“父”应用程序没有有效的方法来控制在同一个JVM中运行的“子”应用程序。 如果孩子陷入困境或者资源管理通常很草率，那么父母也会受到影响。 

The performance is essentially the same, because the essentially the same thing is happening in both cases. For example, on a UNIX / Linux platform:
 

     
 
  • The current process is 'forked'.
    •  
 
  • The new child process 'exec's the 'java' command, passing the specified command line arguments.
    •  
 
  • The child JVM starts ...
    •  

 

There might be secondary performance differences. For example in the way that the child's standard input / output / error streams get handled by the parent may be different. But usually you can forget about this kind of thing.
 

[As @Amadan notes, using a class loader to launch the Java application in the current JVM is considerably more efficient ... because it avoids the overheads of JVM startup, JIT compilation of common code, etc. But the main downside (apart from simplicity) is that there's no effective way for the "parent" application to control a "child" application that is running in the same JVM. If the child gets stuck in a loop or is generally sloppy with resource management, the parent suffers too.]

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