实例讲解实现抓取网上房产信息的ASP程序
2018-09-06 11:30
<%@LANGUAGE=VBSCRIPTCODEPAGE=936%>
<!-- #include file=conn.asp -->
<!-- #include file=inc/function.asp -->
<!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN
<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
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=)+6,instr(getcont(i), onClick)-10)
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：,房屋具体位置：)
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(房屋具体位置:&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)
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)
遍历匹配集合，并替换掉匹配的项目
For Each Match in Matches
strHtml=Replace(strHTML,Match.Value,)
Next
RemoveHTML=strHTML
Set objRegExp = Nothing
set Matches=nothing
End Function
%>
conn.asp
<%
on error resume next
con= driver={Microsoft Access Driver (*.mdb)};dbq= & Server.MapPath(stest.mdb)
conn.open con
sub connclose
conn.close
set conn=nothing
end sub
%>
附：抓取信息的详细页面事例
总序列号：
479280
信息类别：
出租
所在城市：
济南
房屋具体位置：
华龙路华信路交界口
房屋类型：
其他
楼层：
六层
使用面积：
24～240 平方米之间
房价：
0 [租赁:元/月,买卖:万元/套]
其他说明：
华信商务楼3至6层小空间对外出租（0.5元/平起），本楼属纯商务办公投资使用，可用于办公写字间，周边设施齐全、交通便利（37、80、K95在本楼前经过），全产权、市证，楼内设施包括水、电、暖、电梯设施齐全，有意者可电讯！
联系人：
鲁、王
联系方式：
88017966、86812217
信息来源：
2005-8-4 8:28:55来自：218.98.86.175
点击次数：
19
文章标题：实例讲解实现抓取网上房产信息的ASP程序
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