ASP保存远程图片到本地 同时取得第一张图片

时间:2008-10-07 12:20:56  来源:第二电脑网上收集  作者:

  第二电脑网导读::将相对地址转换为绝对地址'参 数:PrimitiveUrl ------要转换的相对地址'参 数:ConsultUrl ------当前网页地址'==================================================Function DefiniteUrl(Byval PrimitiveUrl,Byval ConsultUrl)Dim ConTemp,PriTemp,Pi,Ci,PriArray,ConArrayIf PrimitiveUrl="" or ConsultUrl="" or Primiti...
  正文: 这是本人在SNA新闻采集系统 For 动力3.62 里使用的几个函数
可以普遍的使用在采集 或者 在线添加文章中
以下是函数程序代码
<%
'==================================================
'函数名:DefiniteUrl
'作 用:将相对地址转换为绝对地址
'参 数:PrimitiveUrl ------要转换的相对地址
'参 数:ConsultUrl ------当前网页地址
'==================================================
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
'==================================================
'函数名:ReplaceSaveRemoteFile
'作 用:替换、保存远程文件
'参 数:ConStr ------ 要替换的字符串
'参 数:StarStr ----- 前导
'参 数:OverStr -----
'参 数:IncluL ------
'参 数:IncluR ------
'参 数:SaveTf ------ 是否保存文件,False不保存,True保存
'参 数:SaveFilePath- 保存文件夹
'参 数: TistUrl------ 当前网页地址
'==================================================
Function ReplaceSaveRemoteFile(ConStr,StartStr,OverStr,IncluL,IncluR,SaveTf,SaveFilePath,TistUrl)
If ConStr="$False$" or ConStr="" Then
ReplaceSaveRemoteFile="$False$"
Exit Function
End If
Dim Temphotoshop/ target=_blank class=infotextkey>pstr,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 & "/"

'图片转换/保存
TempArray=Split(TempStr,"$Array$")
For Tempi=0 To Ubound(TempArray)
RemoteFileurl=DefiniteUrl(TempArray(Tempi),TistUrl)
If RemoteFileurl<>"$False$" And SaveTf=True Then'保存图片
ArrSaveFileName = Split(RemoteFileurl,".")
SaveFileType=ArrSaveFileName(Ubound(ArrSaveFileName))'文件类型
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'不保存图片
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
'==================================================
'过程名:SaveRemoteFile
'作 用:保存远程的文件到本地
'参 数:LocalFileName ------ 本地文件名
'参 数:RemoteFileUrl ------ 远程文件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

'==================================================
'过程名:GetImg
'作 用:取得文章中第一张图片
'参 数:str ------ 文章内容
'参 数:strpath ------ 保存图片的路径
'==================================================
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

'==================================================
'函数名:CheckDir2
'作 用:检查文件夹是否存在
'参 数:FolderPath ------文件夹地址
'==================================================
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
'==================================================
'函数名:MakeNewsDir2
'作 用:创建新的文件夹
'参 数:foldername ------文件夹名称
'==================================================
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

%>

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