直接保存URL图像或网页到服务器本地的类

代码如下:

<% @ LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<%
Option Explicit

Class BoxInfoImg
    '传输类的使用方法
    '图象上传和上传信息获取CLASS

'用法:
    '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>传输完毕",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.blueidea.com/img/common/logo.gif"><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
   <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> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="V37">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<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>