实例讲解ASP小偷是抓取网上房产信息的
网上的小偷程序越来越多，有没有兴趣研究一下抓取原理呢，有兴趣的话，跟我来话，COME BABY，我们实例分析：
<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<!-- #include file="conn.asp" -->
<!-- #include file="inc/function.asp" -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta http-equiv="refresh" content="300;URL=steal_house.asp">
</head>
<body>
<%
on error resume next
Server.ScriptTimeout = 999999
========================================================
字符编码函数
====================================================
Function BytesToBstr(body,code)
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 =code
BytesToBstr = objstream.ReadText
objstream.Close
set objstream = nothing
End Function
取行字符串在另一字符串中的出现位置
Function Newstring(wstr,strng)
Newstring=Instr(lcase(wstr),lcase(strng))
if Newstring<=0 then Newstring=Len(wstr)
End Function
替换字符串函数
function ReplaceStr(ori,str1,str2)
ReplaceStr=replace(ori,str1,str2)
end function
====================================================
function Readxml(标准化越来越近了)(url,code,start,ends)
set oSend=createobject("Microsoft.xml(标准化越来越近了)HTTP")
SourceCode = oSend.open ("GET",url,false)
oSend.send()
Readxml(标准化越来越近了)=BytesToBstr(oSend.responseBody,code )
start=Instr(Readxml(标准化越来越近了),start)
Readxml(标准化越来越近了)=mid(Readxml(标准化越来越近了),start)
ends=Instr(Readxml(标准化越来越近了),ends)
Readxml(标准化越来越近了)=left(Readxml(标准化越来越近了),ends-1)
end function
function SubStr(body,start,ends)
start=Instr(body,start)
SubStr=mid(body,start+len(start)+1)
ends=Instr(SubStr,ends)
SubStr=left(SubStr,ends-1)
end function
dim getcont,NewsContent
dim url,title
url="http://www.***.com"新闻网址knowsky.com
getcont=Readxml(标准化越来越近了)(url,"gb2312","<table class=k2 border=""0""","</table>")
getcont=RegexHtml(getcont)
dim KeyId,NewsClass,City,Position,HouseType,Level,Area,Price,Demostra
dim ContactMan,Contact
for i=2 to ubound(getcont)
response.Write(getcont(i)&"__<br>")
tempLink=mid(getcont(i),instr(getcont(i),"href=""")+6,instr(getcont(i),""" onClick")-10)
tempLink=replace(tempLink,"../","")
response.Write(i&":"&tempLink&"<br>")
NewsContent=Readxml(标准化越来越近了)(tempLink,"gb2312","<td valign=""bottom"" width=""400"">","<hr width=""760"" noshade size=""1"" color=""#808080""> ")
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