解决ASP执行DB查询中的特殊字符问题

　　例如他的名字是1"test，密码是A|&900，这时当你执行以下的查询语句时，肯定会报错：
　　SQL = "SELECT * FROM SecurityLevel WHERE UID="" & UserID & """
　　SQL = SQL & " AND PWD="" & Password & """

　　因为你的SQL将会是这样：
　　SELECT * FROM SecurityLevel WHERE UID="1"test"　AND PWD="A|&900"

　　在SQL中，"|"为分割字段用的，显然会出错了。现在提供下面的几个函数，专门用来处理这些头疼的东西：
Function ReplaceStr (TextIn, ByVal SearchStr As String, _

　　ByVal Replacement As String, _

　　ByVal CompMode As Integer)

　　Dim WorkText As String, Pointer As Integer

If IsNull(TextIn) Then

　　ReplaceStr = Null

Else

　　WorkText = TextIn

　　Pointer = InStr(1, WorkText, SearchStr, CompMode)

Do While Pointer > 0

　　WorkText = Left(WorkText, Pointer - 1) & Replacement & _

　　Mid(WorkText, Pointer + Len(SearchStr))

　　Pointer = InStr(Pointer + Len(Replacement), WorkText, _

　　SearchStr, CompMode)

Loop

　　ReplaceStr = WorkText

End If

End Function

Function SQLFixup(TextIn)

　　SQLFixup = ReplaceStr(TextIn, """, """", 0)

End Function

Function JetSQLFixup(TextIn)

　　Dim Temp

　　Temp = ReplaceStr(TextIn, """, """", 0)

　　JetSQLFixup = ReplaceStr(Temp, "|", "" & chr(124) & "", 0)

End Function

Function FindFirstFixup(TextIn)

　　Dim Temp

　　Temp = ReplaceStr(TextIn, """, "" & chr(39) & "", 0)

　　FindFirstFixup = ReplaceStr(Temp, "|", "" & chr(124) & "", 0)

End Function

　　有了上面几个函数后，当你在执行一个sql前，请先使用：
　　SQL = "SELECT * FROM SecurityLevel WHERE UID="" & SQLFixup(UserID) & """
　　SQL = SQL & " AND PWD="" & SQLFixup(Password) & """