ASP实用技巧:强制刷新和判断文件地址

2006-10-25 13:57 稿源:天极网  0条评论

   强制刷新网页

<%
  ’强制性刷新随机验证码
  ’让随机验证码每次按IE的后退按钮时,返回登录页面的随即码都自动刷新,
  Response.expires=-1
  Response.AddHeader"pragma","no-cache"
  Response.AddHeader"cache-control","no-store"
%>

  判断文件地址是否有效

<%
  ’原创作者:小艺 QQ:52093 时间:2005.6.30
  Response.Write("<head><style><!--span{ font-size: 9pt }--></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
   Next
   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
  Next

  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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