Question

请高手帮忙详细讲解下面的登陆功能代码每一句的意思

请高手帮忙详细讲解下面的登陆功能代码每一句的意思
还有一个问题 登陆时是使用用户名和密码 但是我还想要在后面的页中同时显示用户名用户编号 请问如何用session实现？

代码如下：
<%
' *** 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("textfield"))
If MM_valUsername <> "" Then
MM_fldUserAuthorization=""
MM_redirectLoginSuccess="chenggong.asp"
MM_redirectLoginFailed="shibai.asp"
MM_flag="ADODB.Recordset"
set MM_rsUser = Server.CreateObject(MM_flag)
MM_rsUser.ActiveConnection = MM_conn_STRING
MM_rsUser.Source = "SELECT 队员姓名, 密码, 队员编号"
If MM_fldUserAuthorization <> "" Then MM_rsUser.Source = MM_rsUser.Source & "," & MM_fldUserAuthorization
MM_rsUser.Source = MM_rsUser.Source & " FROM dbo.队员编号表 WHERE 队员姓名='" & Replace(MM_valUsername,"'","''") &"' AND 密码='" & Replace(Request.Form("textfield2"),"'","''") & "'"
MM_rsUser.CursorType = 0
MM_rsUser.CursorLocation = 2
MM_rsUser.LockType = 3
MM_rsUser.Open
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

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 false 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
%>

Answer 1

DW产生的代码很烂的，全是机器代码
If Request.QueryString<>"" Then MM_LoginAction = MM_LoginAction + "?" + Server.HTMLEncode(Request.QueryString)'这个是能把参数保存 ，用户验证成功后能返回到一个页面
If MM_valUsername <> "" Then
MM_fldUserAuthorization=""
MM_redirectLoginSuccess="chenggong.asp"
MM_redirectLoginFailed="shibai.asp"
MM_flag="ADODB.Recordset"
set MM_rsUser = Server.CreateObject(MM_flag)
MM_rsUser.ActiveConnection = MM_conn_STRING
MM_rsUser.Source = "SELECT 队员姓名, 密码, 队员编号"
这几句要是看不懂，我说什么你也不会懂的
MM_rsUser.CursorType = 0
MM_rsUser.CursorLocation = 2
MM_rsUser.LockType = 3
MM_rsUser.Open 以上是打开表的参数
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
这是如果能找到就把一个值放入SESSION("MM_Username")
If (MM_fldUserAuthorization <> "") Then
Session("MM_UserAuthorization") = CStr(MM_rsUser.Fields.Item(MM_fldUserAuthorization).Value)
Else
Session("MM_UserAuthorization") = ""
End If

这个是用户的一些值放入SESSION
if CStr(Request.QueryString("accessdenied")) <> "" And false 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
%>
后面是成功与不成功各到什么页面，DW代码太烂了，你自己写吧，我想写这种代码都用不了三分钟，我光看这个代码就就花了10分钟了，变量太多，根本看了就忘