ASP保存遠程圖片到本地 同時取得第一張圖片並創建縮略圖的代碼

采集中 或者 在線添加文章中 都可以用到此功能
俺自己在baidu上搜索的保存遠程圖片到本地的代碼 感覺比較難用點 而且沒有現成的比較全的代碼 俺也看不懂
俺從 SNA新聞采集系統 For 3.62 (程序制作:ansir)裡提取了點函數 用下 比較簡單好用
以下是函數
程序代碼 
復制代碼 代碼如下:
<%
'==================================================
'函數名：CheckDir2
'作 用：檢查文件夾是否存在
'參 數：FolderPath ------文件夾地址
'==================================================
Function CheckDir2(byval FolderPath)
dim fso
folderpath=Server.MapPath(".")&"\"&folderpath
Set fso = Server.CreateObject("Scripting.FileSystemObject")
If fso.FolderExists(FolderPath) then
'存在
CheckDir2 = True
Else
'不存在
CheckDir2 = False
End if
Set fso = nothing
End Function
'==================================================
'函數名：MakeNewsDir2
'作 用：創建新的文件夾
'參 數：foldername ------文件夾名稱
'==================================================
Function MakeNewsDir2(byval foldername)
dim fso
Set fso = Server.CreateObject("Scripting.FileSystemObject")
fso.CreateFolder(Server.MapPath(".") &"\" &foldername)
If fso.FolderExists(Server.MapPath(".") &"\" &foldername) Then
MakeNewsDir2 = True
Else
MakeNewsDir2 = False
End If
Set fso = nothing
End Function
'==================================================
'函數名：DefiniteUrl
'作 用：將相對地址轉換為絕對地址
'參 數：PrimitiveUrl ------要轉換的相對地址
'參 數：ConsultUrl ------當前網頁地址
'==================================================
Function DefiniteUrl(Byval PrimitiveUrl,Byval ConsultUrl)
Dim ConTemp,PriTemp,Pi,Ci,PriArray,ConArray
If PrimitiveUrl="" or ConsultUrl="" or PrimitiveUrl="$False$" Then
DefiniteUrl="$False$"
Exit Function
End If
If Left(ConsultUrl,7)<>"HTTP://" And Left(ConsultUrl,7)<>"http://" Then
ConsultUrl= "http://" & ConsultUrl
End If
ConsultUrl=Replace(ConsultUrl,"://",":\\")
If Right(ConsultUrl,1)<>"/" Then
If Instr(ConsultUrl,"/")>0 Then
If Instr(Right(ConsultUrl,Len(ConsultUrl)-InstrRev(ConsultUrl,"/")),".")>0 then
Else
ConsultUrl=ConsultUrl & "/"
End If
Else
ConsultUrl=ConsultUrl & "/"
End If
End If
ConArray=Split(ConsultUrl,"/")
If Left(PrimitiveUrl,7) = "http://" then
DefiniteUrl=Replace(PrimitiveUrl,"://",":\\")
ElseIf Left(PrimitiveUrl,1) = "/" Then
DefiniteUrl=ConArray(0) & PrimitiveUrl
ElseIf Left(PrimitiveUrl,2)="./" Then
DefiniteUrl=ConArray(0) & Right(PrimitiveUrl,Len(PrimitiveUrl)-1)
ElseIf Left(PrimitiveUrl,3)="../" then
Do While Left(PrimitiveUrl,3)="../"
PrimitiveUrl=Right(PrimitiveUrl,Len(PrimitiveUrl)-3)
Pi=Pi+1
Loop
For Ci=0 to (Ubound(ConArray)-1-Pi)
If DefiniteUrl<>"" Then
DefiniteUrl=DefiniteUrl & "/" & ConArray(Ci)
Else
DefiniteUrl=ConArray(Ci)
End If
Next
DefiniteUrl=DefiniteUrl & "/" & PrimitiveUrl
Else
If Instr(PrimitiveUrl,"/")>0 Then
PriArray=Split(PrimitiveUrl,"/")
If Instr(PriArray(0),".")>0 Then
If Right(PrimitiveUrl,1)="/" Then
DefiniteUrl="http:\\" & PrimitiveUrl
Else
If Instr(PriArray(Ubound(PriArray)-1),".")>0 Then
DefiniteUrl="http:\\" & PrimitiveUrl
Else
DefiniteUrl="http:\\" & PrimitiveUrl & "/"
End If
End If
Else
If Right(ConsultUrl,1)="/" Then
DefiniteUrl=ConsultUrl & PrimitiveUrl
Else
DefiniteUrl=Left(ConsultUrl,InstrRev(ConsultUrl,"/")) & PrimitiveUrl
End If
End If
Else
If Instr(PrimitiveUrl,".")>0 Then
If Right(ConsultUrl,1)="/" Then
If right(PrimitiveUrl,3)=".cn" or right(PrimitiveUrl,3)="com" or right(PrimitiveUrl,3)="net" or right(PrimitiveUrl,3)="org" Then
DefiniteUrl="http:\\" & PrimitiveUrl & "/"
Else
DefiniteUrl=ConsultUrl & PrimitiveUrl
End If
Else
If right(PrimitiveUrl,3)=".cn" or right(PrimitiveUrl,3)="com" or right(PrimitiveUrl,3)="net" or right(PrimitiveUrl,3)="org" Then
DefiniteUrl="http:\\" & PrimitiveUrl & "/"
Else
DefiniteUrl=Left(ConsultUrl,InstrRev(ConsultUrl,"/")) & "/" & PrimitiveUrl
End If
End If
Else
If Right(ConsultUrl,1)="/" Then
DefiniteUrl=ConsultUrl & PrimitiveUrl & "/"
Else
DefiniteUrl=Left(ConsultUrl,InstrRev(ConsultUrl,"/")) & "/" & PrimitiveUrl & "/"
End If
End If
End If
End If
If Left(DefiniteUrl,1)="/" then
DefiniteUrl=Right(DefiniteUrl,Len(DefiniteUrl)-1)
End if
If DefiniteUrl<>"" Then
DefiniteUrl=Replace(DefiniteUrl,"//","/")
DefiniteUrl=Replace(DefiniteUrl,":\\","://")
Else
DefiniteUrl="$False$"
End If
End Function
'==================================================
'函數名：ReplaceSaveRemoteFile
'作 用：替換、保存遠程文件
'參 數：ConStr ------ 要替換的字符串
'參 數：StarStr ----- 前導
'參 數：OverStr -----
'參 數：IncluL ------
'參 數：IncluR ------
'參 數：SaveTf ------ 是否保存文件，False不保存，True保存
'參 數：SaveFilePath- 保存文件夾
'參 數: TistUrl------ 當前網頁地址
'==================================================
Function ReplaceSaveRemoteFile(ConStr,StartStr,OverStr,IncluL,IncluR,SaveTf,SaveFilePath,TistUrl)
If ConStr="$False$" or ConStr="" Then
ReplaceSaveRemoteFile="$False$"
Exit Function
End If
Dim TempStr,TempStr2,ReF,Matches,Match,Tempi,TempArray,TempArray2,OverTypeArray
Set ReF = New Regexp
ReF.IgnoreCase = True
ReF.Global = True
ReF.Pattern = "("&StartStr&").+?("&OverStr&")"
Set Matches =ReF.Execute(ConStr)
For Each Match in Matches
If Instr(TempStr,Match.Value)=0 Then
If TempStr<>"" then
TempStr=TempStr & "$Array$" & Match.Value
Else
TempStr=Match.Value
End if
End If
Next
Set Matches=nothing
Set ReF=nothing
If TempStr="" or IsNull(TempStr)=True Then
ReplaceSaveRemoteFile=ConStr
Exit function
End if
If IncluL=False then
TempStr=Replace(TempStr,StartStr,"")
End if
If IncluR=False then
If Instr(OverStr,"|")>0 Then
OverTypeArray=Split(OverStr,"|")
For Tempi=0 To Ubound(OverTypeArray)
TempStr=Replace(TempStr,OverTypeArray(Tempi),"")
Next
Else
TempStr=Replace(TempStr,OverStr,"")
End If
End if
TempStr=Replace(TempStr,"""","")
TempStr=Replace(TempStr,"'","")
Dim RemoteFile,RemoteFileurl,SaveFileName,SaveFileType,ArrSaveFileName,RanNum
If Right(SaveFilePath,1)="/" then
SaveFilePath=Left(SaveFilePath,Len(SaveFilePath)-1)
End If
If SaveTf=True then
If CheckDir2(SaveFilePath)=False Then
If MakeNewsDir2(SaveFilePath)=False Then
SaveTf=False
End If
End If
End If
SaveFilePath=SaveFilePath & "/"
'圖片轉換/保存
TempArray=Split(TempStr,"$Array$")
For Tempi=0 To Ubound(TempArray)
RemoteFileurl=DefiniteUrl(TempArray(Tempi),TistUrl)
If RemoteFileurl<>"$False$" And SaveTf=True Then'保存圖片
ArrSaveFileName = Split(RemoteFileurl,".")
SaveFileType=ArrSaveFileName(Ubound(ArrSaveFileName))'文件類型
RanNum=Int(900*Rnd)+100
SaveFileName = SaveFilePath&year(now)&month(now)&day(now)&hour(now)&minute(now)&second(now)&ranNum&"."&SaveFileType
Call SaveRemoteFile(SaveFileName,RemoteFileurl)
ConStr=Replace(ConStr,TempArray(Tempi),SaveFileName)
ElseIf RemoteFileurl<>"$False$" and SaveTf=False Then'不保存圖片
SaveFileName=RemoteFileUrl
ConStr=Replace(ConStr,TempArray(Tempi),SaveFileName)
End If
If RemoteFileUrl<>"$False$" Then
If UploadFiles="" then
UploadFiles=SaveFileName
Else
UploadFiles=UploadFiles & "|" & SaveFileName
End if
End If
Next
ReplaceSaveRemoteFile=ConStr
End function
'==================================================
'過程名：SaveRemoteFile
'作 用：保存遠程的文件到本地
'參 數：LocalFileName ------ 本地文件名
'參 數：RemoteFileUrl ------ 遠程文件URL
'==================================================
sub SaveRemoteFile(LocalFileName,RemoteFileUrl)
dim Ads,Retrieval,GetRemoteData
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
'==================================================
'過程名：GetImg
'作 用：取得文章中第一張圖片
'參 數：str ------ 文章內容
'參 數：strpath ------ 保存圖片的路徑
'==================================================
Function GetImg(str,strpath)
set objregEx = new RegExp
objregEx.IgnoreCase = true
objregEx.Global = true
zzstr=""&strpath&"(.+?)\.(jpg|gif|png|bmp)"
objregEx.Pattern = zzstr
set matches = objregEx.execute(str)
for each match in matches
retstr = retstr &"|"& Match.Value
next
if retstr<>"" then
Imglist=split(retstr,"|")
Imgone=replace(Imglist(1),strpath,"")
GetImg=Imgone
else
GetImg=""
end if
end function
%>

以下是 例子
程序代碼
復制代碼 代碼如下:
<form id="form1" name="form1" method="post" action="?action=test">
<textarea name="body" cols="50" rows="5" id="body">
<img height="180" src="http://cimg2.163.com/cnews/2006/8/21/200608210738371d0a8.jpg" width="240" border="0" />
<img class="left"src="http://news.163.com/img/netease_logo.gif" width="114" />
<img height="60" src="http://cimg2.163.com/cnews/2006/8/18/2006081811465369976.jpg" width="120" border="0" />
<img height="60" alt="中國維和人數大國之首" src="http://cimg2.163.com/cnews/2006/8/18/200608181506554fd8f.jpg" width="120" border="0" />
</textarea>
<input type="submit" name="Submit" value="提交" />
</form>
<%
if request.QueryString("action")="test" then
'圖片開始的字符串
FilesStartStr="src="
'圖片結束的字符串
FilesOverStr="gif|jpg|bmp"
'保存圖片的文件夾
FilesPath="qq"
'取得保存圖片的網站URL 自動判斷是絕對 還是相對路徑 該例子中圖片是絕對地址 所以NEWURL等於沒用 如果是../images/123.gif這樣的 就需要指定NEWURL了
NewsUrl="http://news.163.com"
'取得文章內容
Content =Request.Form("body")
'開始保存圖片
Content=ReplaceSaveRemoteFile(Content,FilesStartStr,FilesOverStr,False,True,True,FilesPath,NewsUrl)
'對新聞中的第一張圖片創建縮略圖
if GetImg(Content,FilesPath)<>"" then
Imgsrc=GetImg(Content,FilesPath)
Imgsrc=replace(Imgsrc,FilesPath,"")
Set Jpeg = Server.CreateObject("Persits.Jpeg")
Path = Server.MapPath(""&FilesPath&"") & "\"&Imgsrc&""
Jpeg.Open Path
'如果圖片寬小於等於120 高小於等於90 則不創建縮略圖
if Jpeg.OriginalWidth<=120 and Jpeg.Height<=90 then
Jpeg.Width = Jpeg.OriginalWidth
Jpeg.Height = Jpeg.OriginalHeight
Smallimg=FilesPath&""&GetImg(Content,FilesPath)
else
'圖片寬度高度/2
Jpeg.Width = Jpeg.OriginalWidth / 2
Jpeg.Height = Jpeg.OriginalHeight / 2
Jpeg.Save Server.MapPath(""&FilesPath&"") & "\small_"&Imgsrc&""
Smallimg=""&FilesPath&"/small_"&Imgsrc&""
end if
end if
'顯示結果
response.Write("新聞中的第一張圖片是:")
response.Write("<img src="&FilesPath&"/"&GetImg(Content,FilesPath)&">")
response.Write("<br>新聞中的第一張圖片的縮略圖是:")
response.Write("<img src="&Smallimg&">")
response.Write("<br>新的新聞內容（圖片為本地）:<br>")
Response.Write(Content)
Response.End()
end if
%>