用ASP判断文件地址是不是有效

发布时间：2023-09-25 12:51:25 所属栏目：Asp教程来源：

导读：用ASP判断文件地址是不是有效：<%Response.Write("<head><style></style></head>")On Error Resume NextDim thisurl,thistextthisurl=Request("thisurl") '定义文件地址(非Html格式

用ASP判断文件地址是不是有效：

Response.Write("<head><style></style></head>")

On Error Resume Next

Dim thisurl,thistext

thisurl=Request("thisurl") '定义文件地址(非Html格式文档)!

if thisurl="" then

Response.Write("<span>请先输入文件地址!</span>")

Response.End

End if

Function objxmlhttp(xmlurl)

On Error Resume Next

Set objxml = CreateObject("Microsoft.XMLHTTP")

objxml.Open "get",xmlurl,false

objxml.setrequestheader "content-type","application/x-www-form-urlencoded"

objxml.send

objxmlhttp = objxml.responsebody

if Err then

Err.Clear

Response.Write("<span>建立连接失败,文件不存在或网络有问题!;错误原因:"&Err.Description&"！</span>")

Response.End

End if

End Function

Function bytes2BSTR(vIn)

strReturn = ""

For i = 1 To LenB(vIn)

ThisCharCode = AscB(MidB(vIn,i,1))

If ThisCharCode < &H80 Then

strReturn = strReturn & Chr(ThisCharCode)

Else

NextCharCode = AscB(MidB(vIn,i 1,1))

strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 CInt(NextCharCode))

i = i 1

End If

bytes2BSTR = strReturn

End Function

thisurl2=Split(thisurl,",")

For Each ii In thisurl2

thistext=bytes2BSTR(objxmlhttp(ii))

if InStr(thistext,"<html>")<>0 then

Response.Write("<span>"& ii &" <b>×</b></span><br>")

Else

Response.Write("<span>"& ii &" <b></b></span><br>")

End if

if Err then

Err.Clear

Response.Write("<span>碰到意外!;错误原因:"&Err.Description&"！</span>")

Response.End

End if

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