用户 'JUJUMAO\ASPNET' 登录失败怎么办？（有源码）

我用浏览器浏览时出现这样的错误：
Server Error in '/' Application.
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用户 'JUJUMAO\ASPNET' 登录失败。
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: 用户 'JUJUMAO\ASPNET' 登录失败。

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[SqlException (0x80131904): 用户 'JUJUMAO\ASPNET' 登录失败。]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +437
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105
System.Data.SqlClient.SqlConnection.Open() +111
BookStore.BookStoreDBO.GetBookCategories() in c:\inetpub\wwwroot\bookstore\bookstoredbo.cs:244
BookStore.Menu.Page_Load(Object sender, EventArgs e) in c:\inetpub\wwwroot\bookstore\menu.ascx.cs:34
System.Web.UI.Control.OnLoad(EventArgs e) +98
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Control.LoadRecursive() +154
System.Web.UI.BasePartialCachingControl.LoadRecursive() +113
System.Web.UI.Control.LoadRecursive() +154
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4308

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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
怎么回事？哪位高手帮忙调试一下？

[此贴子已经被作者于2007-9-23 8:23:39编辑过]