图片防盗链问题。
QQ空间的图片做了防盗链。。在自己站点里链接QQ头像:<img src="http://qlogo1.store.会显示QQ防盗链的提示。。
<img src="http://www. 但是这个可以显示。。一些QQ空间相关的网站也能盗链图片。。
pic.asp 里面的是怎么实现解开防盗链的?
asp怎样解开防盗链呢?
<% response.ContentType ="image/jpeg" dim xmlhttp,url url = "http://qlogo1.store." '获取速度慢 'url = "http://www.'速度快。 set xmlhttp = server.CreateObject("Microsoft.XMLHTTP") xmlhttp.open "get",url,false xmlhttp.send response.BinaryWrite xmlhttp.responseBody %>我用这段测试。。
<% 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 Retri Set Retri = Server.CreateObject("Microsoft.XMLHTTP") With Retri .Open "Get", strUrl, False,"","" .setRequestHeader "Referer", curlpath .Send GetWebData =.ResponseBody End With Set Retri = 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 end property public property let name(str) '设置cache名 cacheName=str & path obj=application(cacheName) expireTimeName=str & "expires" & path expireTime=application(expireTimeName) end property public property let expires(tm) '重设置过期时间 expireTime=tm application.lock application(expireTimeName)=expireTime application.unlock end property public sub add(var,expire) '赋值 if isempty(var) or not isDate(expire) then exit sub end if obj=var expireTime=expire application.lock application(cacheName)=obj application(expireTimeName)=expireTime application.unlock end sub public property get value '取值 if isempty(obj) or not isDate(expireTime) then value=null elseif CDate(expireTime)<now then value=null else value=obj end if end property public sub makeEmpty() '释放application application.lock application(cacheName)=empty application(expireTimeName)=empty application.unlock obj=empty expireTime=empty end sub public function equal(var2) '比较 if typename(obj)<>typename(var2) then equal=false elseif typename(obj)="Object" then if obj is var2 then equal=true else equal=false end if elseif typename(obj)="Variant()" then if join(obj,"^")=join(var2,"^") then equal=true else equal=false end if else if obj=var2 then equal=true else equal=false end if end if end function end class %>