ASP保存远程文件到本地（增强版）

将下面代码保存成asp文件即可！
<% @ LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<%
Option Explicit
'图象上传和上传信息获取类
Class BoxInfoImg
'使用方法:
'dim imgUp
'set imgUp=new BoxInfoImg

'属性:
'imgUp.width   '宽
'imgUp.height   '高
'imgUp.imgSize   '大小
'imgUp.imgType   '类型
'imgUp.imgName   '文件名
'imgUp.imgName   '图像文件名:"&
'imgUp.filename   '文件名"&
'imgUp.extName   '扩展名"
'imgUp.DiskPath   '保存位置"
'imgUp.XuPath   '虚拟路径"
'imgUp.NewUrl   '保存后url"
'imgUp.SaveMode   '保存后url"

'方法:
'imgUp.saveImg(fullpath)       '保存图像文件

dim ADOS
dim width,height,imgSize,imgType,imgName,fileName
dim preName,extName
dim SavePath,SaveName,SaveMode
dim DiskPath,XuPath,NewUrl
dim textStr
dim i

Private Sub Class_Initialize
   Set ADOS=Server.CreateObject("Adodb.Stream")
   ADOS.Type=1
   ADOS.Mode=3
   ADOS.Open
   getImageSize
End Sub

Private Sub Class_Terminate
   ADOS.close
   set ADOS=nothing
End Sub

Public Function getImageSize()
   dim ret(3),bFlag,fdata,fsize
   fdata=GetWebData(GetStrUrl) '取得XmlHttp数据
   fsize=clng(lenb(fdata))              '取得数据尺寸
   if fsize=0 then
    exit function
    R_write "无有效数据保存",0
   end if
   ADOS.Write fdata      
   ADOS.Position=0
   SaveName=iSaveName
   SavePath=iSavePath
   SaveMode=iSaveMode
   '写文本对象读取图像长宽和类型
   ADOS.Position=0 '重置数据开始位置
   bFlag=ADOS.read(3)
   if isNull(bFlag) then
    width=0
    height=0
    imgSize=0
    imgType="unknow"
    ret(0)=imgType:ret(1)=width:ret(2)=height:ret(3)=""
    getimagesize=ret
    exit function
   end if
   '取文件类型和长宽
   select case hex(binVal(bFlag))
   case "4E5089":
    ADOS.read(15)
    ret(0)="png"
    ret(1)=BinVal2(ADOS.read(2))
    ADOS.read(2)
    ret(2)=BinVal2(ADOS.read(2))
   case "464947":
    ADOS.read(3)
    ret(0)="gif"
    ret(1)=BinVal(ADOS.read(2))
    ret(2)=BinVal(ADOS.read(2))
   case "FFD8FF":
    dim p1
    do
    do: p1=binVal(ADOS.Read(1)): loop while p1=255 and not ADOS.EOS
    if p1>191 and p1<196 then exit do else ADOS.read(binval2(ADOS.Read(2))-2)
    do:p1=binVal(ADOS.Read(1)):loop while p1<255 and not ADOS.EOS
   loop while true
    ADOS.Read(3)
    ret(0)="jpg"
    ret(2)=binval2(ADOS.Read(2))
    ret(1)=binval2(ADOS.Read(2))
   case else:
    if left(Bin2Str(bFlag),2)="BM" then
     ADOS.Read(15)
     ret(0)="bmp"
     ret(1)=binval(ADOS.Read(4))
     ret(2)=binval(ADOS.Read(4))
    else
     ret(0)=""
    end if
   end select
   dim tempStr
   dim nameStr
   dim defaultName
   dim ln
   tempStr=split(GetStrUrl,"/")
   nameStr=tempStr(ubound(tempStr))
   if nameStr="" then
    r_write "错误的URL,请输入可访问的URL",0
    exit function
   end if
   fileName=split(nameStr,"?")(0)
   ln=inStrRev(fileName,".")
   if ln>0 then
    preName=left(fileName,inStrRev(fileName,".")-1)
   else
    preName=fileName
   end if
   'R_write fileName,1
   'R_write inStrRev(fileName,"."),1
   'R_write fileName,0
   extName=right(fileName,len(fileName)-inStrRev(fileName,"."))
   Select case ret(0)
   case "png","jpg","bmp","gif","swf"
    width=ret(1)
    height=ret(2)
    imgSize=fsize
    imgType=ret(0)
    imgName=preName&"."&ret(0)
   case else
    width=0
    height=0
    imgSize=fsize
    imgName="unknow"
    imgType=".unknow"
   end select
   if SaveMode="1" then
    defaultName=imgName
    if SaveName="" then
     SaveName=defaultName
    else
     if lcase(right(SaveName,4))<>"."&imgType then
      SaveName=SaveName&"."&imgType
     end if
    end if
   else
    defaultName=filename
   end if
   if SaveName="" then SaveName=defaultName
   SavePath=replace(SavePath,"//","/")
   if right(SavePath,1)<>"/" then SavePath=SavePath&"/"
   if SavePath="" then SavePath="./"
   DiskPath=server.mappath(SavePath&SaveName)
   XuPath=replace(replace(DiskPath,server.mappath("/"),""),"\","/")
   NewUrl="http://"&Request.ServerVariables("SERVER_NAME")&XuPath
   getimagesize=ret
End Function

Public function SaveImg(FullPath)
   SaveImg=false
   if SaveMode="1" then
    if trim(fullpath)="" or _
    width=0 or _
    height=0 or _
    imgSize=0 or _
    imgType=".unknow" then exit function end if
   end if
   ADOS.Position=0
   if SaveMode="2" then
    ADOS.Type=2
    ADOS.Charset ="gb2312"
    ADOS.SaveToFile FullPath,2
    textStr=ADOS.readtext()
   else
    ADOS.SaveToFile FullPath,2
   end if
   SaveImg=true
End function

Private Function Bin2Str(Bin)
   Dim I,Str,clow
   For I=1 to LenB(Bin)
    clow=MidB(Bin,I,1)
    if ASCB(clow)<128 then
     Str = Str & Chr(ASCB(clow))
    else
     I=I+1
     if I <= LenB(Bin) then Str = Str & Chr(ASCW(MidB(Bin,I,1)&clow))
    end if
   Next
   Bin2Str = Str
End Function

Private Function Num2Str(num,base,lens)
   dim ret:ret = ""
   while(num>=base)
    ret=(num mod base) & ret
    num=(num - num mod base)/base
   wend
   Num2Str = right(string(lens,"0") & num & ret,lens)
End Function

Private Function Str2Num(str,base)
   dim ret:ret = 0
   for i=1 to len(str)
    ret = ret *base + cint(mid(str,i,1))
   next
   Str2Num=ret
End Function

Private Function BinVal(bin)
   dim ret:ret = 0
   for i = lenb(bin) to 1 step -1
    ret = ret *256 + ascb(midb(bin,i,1))
   next
   BinVal=ret
End Function

Private Function BinVal2(bin)
   dim ret:ret = 0
   for i = 1 to lenb(bin)
    ret = ret *256 + ascb(midb(bin,i,1))
   next
   BinVal2=ret
End Function

Private Function GetWebData(byval StrUrl)
   if StrUrl="" then
    r_write "无效",1
    exit function
   end if
   dim tempStr
   tempStr=split(GetStrUrl,"/")
   if tempStr(ubound(tempStr))="" or inStr(StrUrl,"/")=0 then
    R_Write "未指定有效的URL",0
    exit function
   end if
   dim Retrieval
   Set Retrieval = Server.CreateObject("Microsoft.XMLHTTP")
   With Retrieval
    .Open "Get", StrUrl, False, "", ""
    .Send
    GetWebData =.ResponseBody
   End With
   Set Retrieval = Nothing
End Function                    
End Class
%>
<%
SUB saveUpload(GetUrl,SavePath,SaveName,mode)
       dim chkInfo

       if GetUrl="" then
              call tform()
              R_Write "<br>传输文件栏没有填写!",0
       end if

       set imgUp=new BoxInfoImg
      
       if mode="1" and imgUp.imgName="unknow" then
              call tform()
              set imgUp=nothing
              R_Write "<br>传输文件栏没有填写有效的图像URL!",0
       end if

       chkInfo=""
       dim i,testStr,showStr
       '限定格式
       select case imgUp.imgType
       case "png","jpg","bmp","gif"
              if imgUp.width=0 or imgUp.height=0 or imgUp.imgSize=0 then
                     chkInfo="<li>"+"传输图像数据不存在,请确定你的URL是否正确"
              end if
       case else
              chkInfo="<li>无效的传输格式,允许图像数据格式为 ""png"",""jpg"",""bmp"",""gif""</li>"
       end select

       'R_Write SavePath,1
       'R_Write mode,1
       'R_Write imgUp.imgName,1
       'R_Write imgUp.filename,1
       'R_Write "SaveName="&SaveName,1
      
       if mode="1" and chkInfo<>"" then '检查上传图像数据合格后,则保存之
                     call tform()
                     R_Write chkInfo,0
       else
              Server.ScriptTimeOut=5000
              imgUp.saveImg imgUp.DiskPath       
       end if
'-------------
                     R_write "<b>===处理结果部分资料===</b><br>",1
                     R_write "　　宽:"&imgUp.width&" pix",1
                     R_write "　　高:"&imgUp.height&" pix",1
                     R_write "　大小:"&formatnumber(imgUp.imgSize/1024,2,-1)&" KB",1
                     R_write "　格式:"&imgUp.imgType,1
                     R_write "图像文件名:"&imgUp.imgName,1
                     R_write "文件名:"&imgUp.filename,1
                     R_write "扩展名:"&imgUp.extName,1
                     R_write "保存位置:"&imgUp.DiskPath,1
                     R_write "虚拟路径:"&imgUp.XuPath,1
                     R_write "保存后url:"&imgUp.NewUrl,1
              call tform()
              set imgUp=nothing
                     R_write "------------------------<br>保存完毕",0
End SUB

SUB tform()
%>
<FORM METHOD=POST name=form2 style="margin:0px;">
　获取 URL：<INPUT TYPE="text" size=50 NAME="GetStrUrl" value="http://www.zhaobus.net/images/zhaobus.jpg"><br>
　保存路径：<INPUT TYPE="text" size=50 NAME="SavePath" value=""><br>
保存文件名：<INPUT TYPE="text" size=50 NAME="SaveName" value=""><br>
　保存类型：
<INPUT TYPE="radio" NAME="SaveMode" value=1 <%if iSaveMode="1" or iSaveMode="" then response.write "checked" end if%>> Web图像
<INPUT TYPE="radio" NAME="SaveMode" value=2 <%if iSaveMode="2" then response.write "checked" end if%>> 文本文件
<INPUT TYPE="radio" NAME="SaveMode" value=0 <%if iSaveMode="0" then response.write "checked" end if%>> 二进制数据
&nbsp;&nbsp;&nbsp;<INPUT TYPE="submit" value="确定提交">

<hr size=1>
<%
if GetStrUrl<>"" then
       if iSaveMode="2" then
              R_write "<button name=""Previews"" title=""页面快照"" onclick=""runCode(0);"">Run this code</button>",1
              R_write "<textarea cols=100 name=content rows=10 style="" width:90%;fixed;word-break:break-all;"">"&server.htmlencode(imgUp.textStr)&"</textarea>",1
       else
               R_write "<img src="""&imgUp.XuPath&"?"&timer()&""" width="&imgUp.width&" height="&imgUp.height&" alt="&imgUp.imgName&">",1
       end if
end if
%>
</FORM>
<!--<hr size=1>
<br>如果保存为图像，不要加扩展名，自动识别加上，如果加的扩展名不合也回自动加上
<br>保存文件路径为空则保存在当前路径
<br>保存文件名为空则使用自动识别取得的文件名
<br>保存为其他任意方式，对asp html 等为取得发送结果的Html-->
<%End SUB

Sub R_write(str,num)
       dim istr:istr=str
       dim inum:inum=num
       response.write str&"<br>"
       if inum=0 then response.end
end sub

'=================调用过程 Execute========================
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>www.zhaobus.net</TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Keywords" CONTENT="www.zhaobus.net">
<META NAME="Description" CONTENT="www.zhaobus.net">
<SCRIPT LANGUAGE="JavaScript">
<!--
/*function runCode()
{
var code=event.srcElement.parentElement.children[0].value;
var newwin=window.open('','','');
newwin.opener = null
newwin.document.write(code);
newwin.document.close();
}
function setsmiley(what)
{
document.PostForm.comment.value += " "+what;
document.PostForm.comment.focus();
} */
function runCode(num) //运行代码HTML
{
// var code=event.srcElement.parentElement.children[0].value;
if(num==1){var code=window.form2.code.innerText;}
if(num==0){var code=window.form2.content.innerText;}
var newwin=window.open('','','');
newwin.opener = null
newwin.document.write(code);
newwin.document.close();
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<%
dim imgUp    '传输对象
dim GetStrUrl   '要获取的图像或网页URL
dim iSaveName   '要保存的名字
dim iSavePath   '要保存的虚拟路径
dim iSaveMode   '保存的模式 1 为图像 0 为任意文件
iSavePath=trim(request.form("SavePath"))
iSaveName=trim(request.form("SaveName"))
GetStrUrl=trim(request.form("GetStrUrl"))
iSaveMode=trim(request.form("SaveMode"))
if GetStrUrl<>"" then
CALL saveUpload(GetStrUrl,iSavePath,iSaveName,iSaveMode)
call tform()
else
call tform()
end if
%>
</BODY>
</HTML>