ASP下载网页内的图片实例

2022-07-15 80酷酷网 80kuku.com

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<%
Function ReplaceRemoteUrl(sHTML, sSaveFilePath, sFileExt)
'//
'//远程保存图片
'/////////////////////////////////////////////////////
'作用：替换字符串中的远程文件为本地文件并保存远程文件
'参数：
'     sHTML        : 要替换的字符串
'     sSavePath    : 保存文件的路径
'     sExt         : 执行替换的扩展名
    Dim s_Content
    s_Content = sHTML
'If IsObjInstalled("Microsoft.XMLHTTP") = False then
'ReplaceRemoteUrl = s_Content
' Exit Function
   ' End If
'远程图片保存目录,结尾请不要加“/”
SaveFilePath="/upload"
'远程图片保存类型
FileExt="jpg|gif|bmp|png"
   Dim re, RemoteFile, RemoteFileurl,SaveFileName,SaveFileType,arrSaveFileNameS,arrSaveFileName,sSaveFilePaths
    Set re = new RegExp
    re.IgnoreCase = True
    re.Global = True
    re.Pattern = "((http|https|ftp|rtsp|mms):(\/\/|\\\\){1}((\w)+[.]){1,}(net|com|cn|org|cc|tv|[0-9]{1,3})(\S*\/)((\S)+[.]{1}(" & sFileExt & ")))"
    's_Content="http://union.3721.com/v2/images/sicon.gif sfsdf"
    response.write s_Content
    Set RemoteFile = re.Execute(s_Content)
    For Each RemoteFileurl in RemoteFile
        SaveFileType = Replace(Replace(RemoteFileurl,"/", "a"), ":", "a")
        'arrSaveFileName = Right(SaveFileType,12)
arrSaveFileName = Mid(RemoteFileurl,InStrRev(RemoteFileurl, "/")+1)
sSaveFilePaths=sSaveFilePath & "/"
        SaveFileName = sSaveFilePaths & arrSaveFileName
        Call SaveRemoteFile(SaveFileName, RemoteFileurl)
        s_Content = Replace(s_Content,RemoteFileurl,SaveFileName)
    Next
    ReplaceRemoteUrl = s_Content
End Function

Sub SaveRemoteFile(LocalFileName,RemoteFileUrl)
    Dim Ads, Retrieval, GetRemoteData
    On Error Resume Next
    Set Retrieval = Server.CreateObject("Microsoft.XMLHTTP")
    With Retrieval
        .Open "Get", RemoteFileUrl, False, "", ""
        .Send
        GetRemoteData = .ResponseBody
    End With
    Set Retrieval = Nothing
    Set Ads = Server.CreateObject("Adodb.Stream")
    With Ads
        .Type = 1
        .Open
        .Write GetRemoteData
        .SaveToFile Server.MapPath(LocalFileName), 2
        .Cancel()
        .Close()
    End With
    Set Ads=nothing
End Sub

Server.ScriptTimeOut=6000 '页面超时时间
url="http://www.webjx.com/htmldata/2006-02-20/1140402873.html"'接收的网址
code=replace(getHTTPPage(url),vbcrlf,"")'替换掉代码中的回车符

start=Instr(code,"<html>")'开始的代码这里取网页中有唯一性质的代码开始
over=Instr(code,"</html>")'结束的代码这里取网页中有唯一性质的代码结束
types=mid(code,start,over-start) 'types 变量就是你需要的部分
'//这里应该继续对取得后的代码做休整以便符合自己需要
'//我才取的是从<html>到</html> 所以是读整个页面实际上根据自己需要查看人家的代码对照下
'//实际上还需要一些其他的函数比如整理HTML标志符的函数, 自动接收远程图片的函数
'//还有就是页面的自动跳转等 == 这个就看自己的扩展了
types=ReplaceRemoteUrl(types,SaveFilePath,FileExt)//下载远程图片
response.write types ' 测试输出
'下边的函数不用管, 包括打开,读取,网页
Function getHTTPPage(Path)
        t = GetBody(Path)
        getHTTPPage=BytesToBstr(t,"GB2312")
End function
Function GetBody(url)
        on error resume next
        Set Retrieval = CreateObject("Microsoft.XMLHTTP")
        With Retrieval
        .Open "Get", url, False, "", ""
        .Send
        GetBody = .ResponseBody
        End With
        Set Retrieval = Nothing
End Function
Function BytesToBstr(body,Cset)
        dim objstream
        set objstream = Server.CreateObject("adodb.stream")
        objstream.Type = 1
        objstream.Mode =3
        objstream.Open
        objstream.Write body
        objstream.Position = 0
        objstream.Type = 2
        objstream.Charset = Cset
        BytesToBstr = objstream.ReadText
        objstream.Close
        set objstream = nothing
End Function
%>