ASP邮箱email格式合法验证检测代码大全

email邮箱检测是最常用的一种检测，我们一般先用JS在客户端做判断，提交数据后服务器端也要做email合法性检测，编程之家跟大家分享：ASP邮箱email格式合法验证检测代码大全。

ASP检测email之用字符串查找的方法

'********************************************

'函数名：IsValidEmail

'作 用：检查Email地址合法性

'参 数：email ----要检查的Email地址

'返回值：True ----Email地址合法

' False ----Email地址不合法

'********************************************

Public Function IsValidEmail(Email)

Dim names, name, I, c

IsValidEmail = True

names = Split(Email, "@")

If UBound(names) <> 1 Then IsValidEmail = False: Exit Function

For Each name In names

If Len(name) <= 0 Then IsValidEmail = False:Exit Function

For I = 1 To Len(name)

c = LCase(Mid(name, I, 1))

If InStr("abcdefghijklmnopqrstuvwxyz_-.", c) <= 0 And Not IsNumeric(c) Then IsValidEmail = False:Exit Function

Next

If Left(name, 1) = "." Or Right(name, 1) = "." Then IsValidEmail = False:Exit Function

Next

If InStr(names(1), ".") <= 0 Then IsValidEmail = False:Exit Function

I = Len(names(1)) - InStrRev(names(1), ".")

If I <> 2 And I <> 3 Then IsValidEmail = False:Exit Function

If InStr(Email, "..") > 0 Then IsValidEmail = False

End Function

ASP检测email之正则表达式验证方法一

Public Function ChkMail(ByVal Email)

Dim Rep,Pmail : ChkMail = True : Set Rep = New RegExp

Rep.Pattern = "([.a-zA-Z0-9_-]){2,10}@([a-zA-Z0-9_-]){2,10}(.([a-zA-Z0-9]){2,}){1,4}$"

Pmail = Rep.Test(Email) : Set Rep = nothing

If Not Pmail Then ChkMail = False

End Function

ASP检测email之正则表达式验证方法二

Function isemail(strng)

isemail = false

Dim regEx, Match

Set regEx = New RegExp

regEx.Pattern = "^w+((-w+)|(.w+))*@[A-Za-z0-9]+((.|-)[A-Za-z0-9]+)*.[A-Za-z0-9]+$"

regEx.IgnoreCase = True

Set Match = regEx.Execute(strng)

if match.count then isemail= true

End Function

ASP检测email之正则表达式验证方法三

Public Function IsEmail(ByVal PString)

Dim plt,Pgt : plt = False : Pgt = False

For x = 2 To Len(PString) - 1

If Mid(PString,x,1) = "@" Then plt = True

If Mid(PString,x,1) = "." And plt = True Then Pgt = True

Next

If plt = True And Pgt = True Then

IsEmail = True

Else

IsEmail = False

End if

End Function