从网上来的代码,,稍微修改了一些地方,其实用的是cache类。。
保存代码为,比如pic.asp
使用:http://www.xxx.com/pic.asp?url=http://www.aaaa.com/log.gif
不光是163,其实就是很多防盗连的图片都可以这个实现。
<%
'盗链判断
'If Instr(Request.ServerVariables("http_referer"),"http://"&Request.ServerVariables("server_name")&"") = 0 Then
'Response.Write "非法链接"
'Response.End
'End If
Dim url, body, myCache
url = Request.QueryString("url")
Set myCache = new cache
myCache.name = "picindex"&url
If myCache.valid Then
body = myCache.value
Else
body = GetWebData(url)
myCache.add body,dateadd("d",1,now)
End If
If Err.Number = 0 Then
Response.CharSet = "UTF-8"
Response.ContentType = "application/octet-stream"
Response.BinaryWrite body
Response.Flush
Else
Wscript.Echo Err.Description
End if
'取得数据
Public Function GetWebData(ByVal strUrl)
Dim curlpath
curlpath = Mid(strUrl,1,Instr(8,strUrl,"/"))
Dim Retrieval
Set Retrieval = Server.CreateObject("Microsoft.XMLHTTP")
With Retrieval
.Open "Get", strUrl, False,"",""
.setRequestHeader "Referer", curlpath
.Send
GetWebData =.ResponseBody
End With
Set Retrieval = Nothing
End Function
'cache类
class Cache
private obj 'cache内容
private expireTime '过期时间
private expireTimeName '过期时间application名
private cacheName 'cache内容application名
private path 'url
private sub class_initialize()
path=request.servervariables("url")
path=left(path,instrRev(path,"/"))
end sub
private sub class_terminate()
end sub
public property get blEmpty
'是否为空
if isempty(obj) then
blEmpty=true
else
blEmpty=false
end if
end property
public property get valid
'是否可用(过期)
if isempty(obj) or not isDate(expireTime) then
valid=false
elseif CDate(expireTime)<now then
valid=false
else
valid=true
end if
使用asp代码突破图片的防盗连
内容版权声明:除非注明,否则皆为本站原创文章。