ASP判断E-Mail的合法性,以及过滤邮箱字符

2018-09-06 13:12

阅读:502

  函数名:chk_Email()

  返回值:布尔值(True为通过,False为未通过)

  参数:email(需要判断的email,类型:字符串) Type_1(是否需要判断@之后的domain,类型:布尔值)

  Type_2(是否只能是特定域的E-Mail注册,类型:布尔值) Type_3(一个E-Mail是否只能注册一次,类型:布尔值)

  

  Const C_Lockdomain=bit.edu.cn,loster.org 特定的域

  Function chk_Email(email,Type_1,Type_2,Type_3)
Dim i,k
Dim At
Dim Email_1,Temp

  If email= Then
chk_Email=False
Exit Function
End If

  Email_1=Cstr(trim(email))

  If Len(Email_1)<5 Then
chk_Email=False
Exit Function
End If

  At=False

  For i=1 To Len(Email_1)
Temp=Mid(Email_1,i,1)
If Temp=@ Then
at=True
Exit For
End If
Next

  If At=False Then
Chk_Email=False
Exit Function
End If

k=0

  For i=1 To Len(Email_1)
Temp=Mid(Email_1,i,1)
If Temp=. then
k=k+1
End If
Next

  If k=0 Or k>2 Then
Chk_Email=False
Exit Function
End If

  
If Type_1=True Then

  For i=1 To Len(Email_1)
Temp=Mid(Email_1,i,1)
If Temp=@ Then
k=i
Exit For
End If
Next

For i=k To Len(Email_1)
Temp=Mid(Email_1,i,1)
If Temp=. Then
k=i
Exit For
End If
Next

  Temp=

  For i=k To Len(Email_1)
Temp=Temp+Mid(Email_1,i,1)
Next

  Temp=Cstr(Trim(Temp))
At=False

  For i=0 To R_Reader(C_Maildomain,,)
If Temp=Reader(i) Then
At=True
Exit For
End If
Next

Erase Reader

  If At=False Then
Chk_Email=False
Exit Function
End If

End If

  If Type_2=True Then
For i=1 To Len(Email_1)
Temp=Mid(Email_1,i,1)
If Temp=@ Then
k=i
Exit For
End If
Next

  Temp=

  For i=k+1 To Len(Email_1)
Temp=Temp+Mid(Email_1,i,1)
Next

  Temp=Cstr(Trim(Temp))

At=False
For i=0 To R_Reader(C_Lockdomain,,)
If Temp=Reader(i) Then
At=True
Exit For
End If
Next

Erase Reader

  If At=False Then
Chk_Email=False
Exit Function
End If
End If

If Type_3=True Then
Dim j
Call Greate_UserDb()
Call Create_Rs(Select * from User_Basic_Info where User_Email=Email_1,1,1,User)
If Rs.Bof=False Then
Chk_email=False
Call Close_Rs()
Call Close_UserDb()
Exit Function
End If
Call Close_Rs()
Call Close_UserDb()
End If
chk_email=True
End Function

  Dim User_Db,User_Driver
Dim User_Conn

  User_Db=Data/userdata.mdb

  建立User_conn的过程
Sub Greate_UserDb()
User_Driver=driver={Microsoft Access Driver (*.mdb)}
User_Driver=User_Driver;dbq=server.mappath(User_Db)
Response.Write (User_Driver)
User_Conn.Open(User_Driver)
End Sub

  关闭User_conn的过程
Sub Close_UserDb()
User_Conn.Close
Set User_Conn=Nothing
End Sub

  Dim Reader
Dim Rs

  读取常数,并将每个常数保存在reader数组中,参数:R_Str(常数串),F_Str(分隔符),返回值:Reader数组的下标
Function R_Reader(R_Str,F_Str)
Dim i

If R_Str= Or F_Str= Then
Exit Function
End If

Reader=Split(R_Str,F_Str)

For i=0 To Ubound(Reader,1)
Reader(i)=Cstr(Trim(Reader(i)))
Next
R_Reader=Ubound(Reader,1)
End Function

  


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