Sql server 是否需要在ASP Classic中关闭嵌套的MSSQL更新命令?

Sql server 是否需要在ASP Classic中关闭嵌套的MSSQL更新命令?,sql-server,asp-classic,vb6,dreamweaver,Sql Server,Asp Classic,Vb6,Dreamweaver,使用Dreamweaver CS5,我添加了以下工作正常的服务器行为 问题是,我需要关闭MM_rsUser1吗 自动生成的代码关闭MM_rsUser,但当我试图在关闭MM_rsUser之前或之后的行上关闭MM_rsUser1时,页面失败 我发现这似乎表明我可能不“需要”,但由于这是我的第一个项目,我正在尝试学习尽可能多的“好习惯”…而且由于Dreamweaver正在生成大部分VB代码,我不想“假设”它对我来说所做的一定是今天的最佳实践。该项目正在添加动态数据和编辑说的数据到一个预先存在的经典AS

使用Dreamweaver CS5,我添加了以下工作正常的服务器行为

问题是,我需要关闭MM_rsUser1吗

自动生成的代码关闭MM_rsUser,但当我试图在关闭MM_rsUser之前或之后的行上关闭MM_rsUser1时,页面失败

我发现这似乎表明我可能不“需要”,但由于这是我的第一个项目,我正在尝试学习尽可能多的“好习惯”…而且由于Dreamweaver正在生成大部分VB代码,我不想“假设”它对我来说所做的一定是今天的最佳实践。该项目正在添加动态数据和编辑说的数据到一个预先存在的经典ASP网站…我的下一个项目将升级到MVC/C

<%
' *** Validate request to log in to this site.
MM_LoginAction = Request.ServerVariables("URL")
If Request.QueryString <> "" Then MM_LoginAction = MM_LoginAction + "?" + Server.HTMLEncode(Request.QueryString)
MM_valUsername = CStr(Request.Form("userid"))
If MM_valUsername <> "" Then
  Dim MM_fldUserAuthorization
  Dim MM_redirectLoginSuccess
  Dim MM_redirectLoginFailed
  Dim MM_loginSQL
  Dim MM_rsUser
  Dim MM_rsUser_cmd
  Dim MM_loginUpdate ' used to execute timestamp to log last successful login for user
  Dim MM_rsUser1 '     also used to execute timestamp as above

  MM_fldUserAuthorization = "accessLevel"
  MM_redirectLoginSuccess = "/sql.asp"
  MM_redirectLoginFailed = "/login.asp"

  MM_loginSQL = "SELECT email, password"
  If MM_fldUserAuthorization <> "" Then MM_loginSQL = MM_loginSQL & "," & MM_fldUserAuthorization
  MM_loginSQL = MM_loginSQL & " FROM table WHERE userid = ? AND pword = ?"
  Set MM_rsUser_cmd = Server.CreateObject ("ADODB.Command")
  MM_rsUser_cmd.ActiveConnection = MM_SQL_STRING
  MM_rsUser_cmd.CommandText = MM_loginSQL
  MM_rsUser_cmd.Parameters.Append MM_rsUser_cmd.CreateParameter("param1", 202, 1, 50, MM_valUsername) ' adVarWChar
  MM_rsUser_cmd.Parameters.Append MM_rsUser_cmd.CreateParameter("param2", 202, 1, 50, Request.Form("password")) ' adVarWChar
  MM_rsUser_cmd.Prepared = true
  Set MM_rsUser = MM_rsUser_cmd.Execute

  If Not MM_rsUser.EOF Or Not MM_rsUser.BOF Then 
    ' username and password match - this is a valid user
    Session("MM_Username") = MM_valUsername
    MM_loginUpdate = "UPDATE table SET lastLoggedIn = { fn NOW() } WHERE userid = '" & MM_valUsername & "'"
    MM_rsUser_cmd.CommandText = MM_loginUpdate
    Set MM_rsUser1 = MM_rsUser_cmd.Execute ' unsure if I have to write an MM_rsUser1.Close somewhere or not, but page fails where I've tried
    If (MM_fldUserAuthorization <> "") Then
      Session("MM_UserAuthorization") = CStr(MM_rsUser.Fields.Item(MM_fldUserAuthorization).Value)
    Else
      Session("MM_UserAuthorization") = ""
    End If
    if CStr(Request.QueryString("accessdenied")) <> "" And true Then
      MM_redirectLoginSuccess = Request.QueryString("accessdenied")
    End If
    MM_rsUser.Close
    Response.Redirect(MM_redirectLoginSuccess)
  End If
  MM_rsUser.Close
  Response.Redirect(MM_redirectLoginFailed)
End If
%>

乍一看,代码有点复杂。我看到两条语句关闭了MM_rsUser。Redirect的作用类似于return语句,因此只会执行其中一个语句,即使IF块倾向于使它看起来不一样。我认为关键在于,如果不输入if块,就无法关闭MM_rsUser1,因为它从未打开过。因此,我建议:

    If Not MM_rsUser.EOF Or Not MM_rsUser.BOF Then 
        ' username and password match - this is a valid user
        Session("MM_Username") = MM_valUsername
        MM_loginUpdate = "UPDATE table SET lastLoggedIn = '" & NOW() & "' WHERE userid = '" & MM_valUsername & "'"
        MM_rsUser_cmd.CommandText = MM_loginUpdate
        Set MM_rsUser1 = MM_rsUser_cmd.Execute ' unsure if I have to write an MM_rsUser1.Close somewhere or not, but page fails where I've tried
        If (MM_fldUserAuthorization <> "") Then
            Session("MM_UserAuthorization") = CStr(MM_rsUser.Fields.Item(MM_fldUserAuthorization).Value)
        Else
            Session("MM_UserAuthorization") = ""
        End If
        if CStr(Request.QueryString("accessdenied")) <> "" And true Then
            MM_redirectLoginSuccess = Request.QueryString("accessdenied")
        End If
        MM_rsUser1.Close 'close it here
        MM_rsUser.Close
        Response.Redirect(MM_redirectLoginSuccess)
    End If 'Not MM_rsUser.EOF Or Not MM_rsUser.BOF 
    'not open, so don't close it
    MM_rsUser.Close
    Response.Redirect(MM_redirectLoginFailed)
End If 'MM_valUsername <> "" 


乍一看,代码有点复杂。我看到两条语句关闭了MM_rsUser。Redirect的作用类似于return语句,因此只会执行其中一个语句,即使IF块倾向于使它看起来不一样。我认为关键在于,如果不输入if块,就无法关闭MM_rsUser1,因为它从未打开过。因此,我建议:

    If Not MM_rsUser.EOF Or Not MM_rsUser.BOF Then 
        ' username and password match - this is a valid user
        Session("MM_Username") = MM_valUsername
        MM_loginUpdate = "UPDATE table SET lastLoggedIn = '" & NOW() & "' WHERE userid = '" & MM_valUsername & "'"
        MM_rsUser_cmd.CommandText = MM_loginUpdate
        Set MM_rsUser1 = MM_rsUser_cmd.Execute ' unsure if I have to write an MM_rsUser1.Close somewhere or not, but page fails where I've tried
        If (MM_fldUserAuthorization <> "") Then
            Session("MM_UserAuthorization") = CStr(MM_rsUser.Fields.Item(MM_fldUserAuthorization).Value)
        Else
            Session("MM_UserAuthorization") = ""
        End If
        if CStr(Request.QueryString("accessdenied")) <> "" And true Then
            MM_redirectLoginSuccess = Request.QueryString("accessdenied")
        End If
        MM_rsUser1.Close 'close it here
        MM_rsUser.Close
        Response.Redirect(MM_redirectLoginSuccess)
    End If 'Not MM_rsUser.EOF Or Not MM_rsUser.BOF 
    'not open, so don't close it
    MM_rsUser.Close
    Response.Redirect(MM_redirectLoginFailed)
End If 'MM_valUsername <> "" 


谢谢你的回复,大卫。不幸的是,我试着在你建议的地方关闭它。很抱歉,我的第一个问题不清楚……忘了,MM_rsUser也被关闭了。还有其他想法吗?+1用于尝试学习好习惯,以及计划迁移到MVC/C。在不了解页面细节的情况下,我无法提出更多建议。确保您测试了所有3种情况:1没有输入用户ID;2.输入了用户ID MM_ValuerName和密码,但在查找中未找到;3良好的用户ID和密码。我又看到了一件闻起来很好笑的事;我会更新我的答案。我试着做一些类似于你建议的事情,基本上是复制/粘贴第一批MMrsuser代码,但是页面根本不会加载。我对“重用”MM_reUser_cmd.Execute的思考过程是,在我将上面提到的两行放在更新中时,我“认为”由于连接已经打开,并且已经处理了第一条SQL语句,我可以通过将语句从MM_LoginSQL更改为MM_loginUpdate来重用它。如果在MM_fldUserAuthorization之前放置了正确的用户/密码,则页面将失败。在任何情况下,您都必须为MM_loginUpdate设置上次登录日期和用户的参数。将这样做,谢谢!我不知道我必须为上次更新设置参数…我确实错过了一个用户的参数。我猜我想既然我没有把?在声明中,我不需要这样做。谢谢谢谢你的回复,大卫。不幸的是,我试着在你建议的地方关闭它。很抱歉,我的第一个问题不清楚……忘了,MM_rsUser也被关闭了。还有其他想法吗?+1用于尝试学习好习惯,以及计划迁移到MVC/C。在不了解页面细节的情况下,我无法提出更多建议。确保您测试了所有3种情况:1没有输入用户ID;2.输入了用户ID MM_ValuerName和密码,但在查找中未找到;3良好的用户ID和密码。我又看到了一件闻起来很好笑的事;我会更新我的答案。我试着做一些类似于你建议的事情,基本上是复制/粘贴第一批MMrsuser代码,但是页面根本不会加载。我对“重用”MM_reUser_cmd.Execute的思考过程是,在我将上面提到的两行放在更新中时,我“认为”由于连接已经打开,并且已经处理了第一条SQL语句,我可以通过将语句从MM_LoginSQL更改为MM_loginUpdate来重用它。如果在MM_fldUserAuthorization之前放置了正确的用户/密码,则页面将失败。在任何情况下,您都必须为MM_loginUpdate设置上次登录日期和用户的参数。将这样做,谢谢!我不知道我必须为上次更新设置参数…我确实错过了一个用户的参数。我猜我想既然我没有把?在声明中,我不需要这样做。谢谢
Dim MM_rsUser_cmd1 
Set MM_rsUser_cmd1 = Server.CreateObject ("ADODB.Command")
MM_rsUser_cmd1.ActiveConnection = MM_SQL_STRING
MM_rsUser_cmd1.CommandText = MM_loginUpdate
MM_rsUser_cmd1.Parameters.Append MM_rsUser_cmd1.CreateParameter("param1", 135, 1, -1, NOW()) ' adDBTimeStamp 
MM_rsUser_cmd1.Parameters.Append MM_rsUser_cmd1.CreateParameter("param2", 202, 1, 50, MM_valUsername) ' adVarWChar
MM_rsUser_cmd1.Prepared = true
Set MM_rsUser1 = MM_rsUser_cmd1.Execute