实例讲解实现抓取网上房产信息的ASP程序


答案：<%@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(url,code,start,ends)
set oSend=createobject("Microsoft.XMLHTTP")
SourceCode = oSend.open ("GET",url,false) 
oSend.send()
ReadXml=BytesToBstr(oSend.responseBody,code )
start=Instr(ReadXml,start)
ReadXml=mid(ReadXml,start)
ends=Instr(ReadXml,ends)
ReadXml=left(ReadXml,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(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=> tempLink=replace(tempLink,"../","")

 response.Write(i&":"&tempLink&"<br>")
 NewsContent=ReadXml(tempLink,"gb2312","<td valign=""bottom"" width=""400"">","<hr width=""760"" noshade size=""1"" color=""#808080""> ")
 NewsContent=RemoveHtml(NewsContent)
 NewsContent=replace(NewsContent,VbCrLf,"")
 NewsContent=replace(NewsContent,vbNewLine,"")
 NewsContent=replace(NewsContent," ","")
 NewsContent=replace(NewsContent," ","")
 NewsContent=replace(NewsContent," ","") 
 NewsContent=replace(NewsContent,"\n","") 
 NewsContent=replace(NewsContent,chr(10),"")
 NewsContent=replace(NewsContent,chr(13),"")
 '===============get Content=======================
 response.Write(NewsContent)
 KeyId=SubStr(NewsContent,"列号：","信息类别：")
 NewsClass=SubStr(NewsContent,"类别：","所在城市：")
 City=SubStr(NewsContent,"城市：","房屋具易做图置：")
 Position=SubStr(NewsContent,"位置：","房屋类型：")
 HouseType=SubStr(NewsContent,"类型：","楼层：")
 Level=SubStr(NewsContent,"楼层：","使用面积：")
 Area=SubStr(NewsContent,"面积：","房价：")
 Price=SubStr(NewsContent,"房价：","其他说明：")
 Demostra=SubStr(NewsContent,"说明：","联系人：")
 ContactMan=SubStr(NewsContent,"联系人：","联系方式：")
 Contact=SubStr(NewsContent,"联系方式：","信息来源：") 
 response.Write("总序列号:"&KeyId&"<br>")
 response.Write("信息类别:"&NewsClass&"<br>")
 response.Write("所在城市:"&City&"<br>")
 response.Write("房屋具易做图置:"&Position&"<br>")
 response.Write("房屋类型:"&HouseType&"<br>")
 response.Write("楼层:"&Level&"<br>")
 response.Write("使用面积:"&Area&"<br>")
 response.Write("房价:"&Price&"<br>")
 response.Write("其他说明:"&Demostra&"<br>")
 response.Write("联系人:"&ContactMan&"<br>")
 response.Write("联系方式:"&Contact&"<br>")
 'title=RemoveHTML(aa(i))
 'response.Write("title:"&title)
 for n=0 to application.Contents.count
   if(application.Contents(n)=KeyId) then
    ifexit=true     
   end if   
 next  
 if not ifexit then
   application(time&i)=KeyId
 '添加到数据库
 '====================================================
 set rs=server.CreateObject("adodb.recordset") 
 rs.open "select top 1 * from news order by id desc",conn,3,3
 rs.addnew
 rs("NewsClass")=NewsClass
 rs("City")=City
 rs("Position")=Position
 rs("HouseType")=HouseType
 rs("Level")=Level
 rs("Area")=Area
 rs("Price")=Price
 rs("Demostra")=Demostra
 rs("ContactMan")=ContactMan
 rs("Contact")=Contact
 rs.update
 rs.close
 set rs=nothing
 end if
 '==================================================

next
function RemoveTag(body)
 Set regEx = New RegExp
 regEx.Pattern = "<[a].*?<\/[a]>"
 regEx.IgnoreCase = True
 regEx.Global = True
 Set Matches = regEx.Execute(body) 
 dim i,arr(15),ifexit
 i=0
 j=0
 For Each Match in Matches
  TempStr = Match.Value  
  TempStr=replace(TempStr,"<td>","")
  TempStr=replace(TempStr,"</td>","")
  TempStr=replace(TempStr,"<tr>","")
  TempStr=replace(TempStr,"</tr>","")  
  arr(i)=TempStr  
  i=i+1
  if(i>=15) then
   exit for
  end if
 Next
 Set regEx=nothing
 Set Matches =nothing
 RemoveTag=arr

end function
function RegexHtml(body)
 dim r_arr(47),r_temp
 Set regEx2 = New RegExp
 regEx2.Pattern ="<a.*?<\/a>"
 regEx2.IgnoreCase = True
 regEx2.Global = True
 Set Matches2 = regEx2.Execute(body) 
 iii=0 
 For Each Match in Matches2

  r_arr(iii)=Match.Value

  iii=iii+1  
 Next
 RegexHtml=r_arr
 set regEx2=nothing
 set Matches2=nothing
end function
'======================================================
conn.close
set conn=nothing
%>
</body>
</html>
 

　　function.asp
 <%
'**************************************************
'函数名：gotTopic
'作  用：截字符串，汉字一个算两个字符，英文算一个字符
'参  数：str   ----原字符串
'       strlen ----截取长度
'返回值：截取后的字符串
'**************************************************
function gotTopic(str,strlen)
 if str="" then
  gotTopic=""
  exit function
 end if
 dim l,t,c, i
 str=replace(replace(replace(replace(str," "," "),""",chr(34)),">",">"),"<","<")
 str=replace(str,"?","")
 l=len(str)
 t=0
 for i=1 to l
  c=Abs(Asc(Mid(str,i,1)))
  if c>255 then
   t=t+2
  else
   t=t+1
  end if
  if t>=strlen then
   gotTopic=left(str,i) & "…"
   exit for
  else
   gotTopic=str
  end if
 next
 gotTopic=replace(replace(replace(replace(gotTopic," "," "),chr(34),"""),">",">"),"<","<")
end function
'=========================================================
'函数：RemoveHTML(strHTML)
'功能：去除HTML标记
'参数：strHTML  --要去除HTML标记的字符串
'=========================================================
Function RemoveHTML(strHTML) 
Dim objRegExp, Match, Matches 
Set objRegExp = New Regexp 
objRegExp.IgnoreCase = True 
objRegExp.Global = True 
'取闭合的<> 
objRegExp.Pattern = "<.+?>" 
'进行匹配 
Set Matches = objRegExp.Execute(strHTML
上一个：讲解ASP方面的知识比较全的asp学习教程
下一个：厉害的用Asp获取Dll加密新闻内容
更多图片编程知识: