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xmlhttp 抓取网页内容2

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Release: 2016-06-07 15:32:21
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抓取网页。偶要实现实实更新天气预报。利用了XMLHTTP组件,抓取网页的指定部分。 需要分件html源代码 此例中的被抓取的html源代码如下 p align=left2004年8月24日星期二;白天:晴有时多云南风34级;夜间:晴南风34级;气温:最高29℃最低19℃ /p 而程序中是

抓取网页。偶要实现实实更新天气预报。利用了XMLHTTP组件,抓取网页的指定部分。
需要分件html源代码
此例中的被抓取的html源代码如下

2004年8月24日星期二;白天:晴有时多云南风3—4级;夜间:晴南风3—4级;气温:最高29℃最低19℃


而程序中是从
以2004年8月24日为关键字搜索,直到结速
而抓取的内容就变成了"2004年8月24日星期二;白天:晴有时多云南风3—4级;夜间:晴南风3—4级;气温:最高29℃最低19℃ "
干干净净的了。记录一下。

On Error Resume Next
Server.ScriptTimeOut=9999999
Function getHTTPPage(Path)
        t = GetBody(Path)
        getHTTPPage=BytesToBstr(t,"GB2312")
End function

Function GetBody(url)
        on error resume next
        Set Retrieval = CreateObject("Microsoft.XMLHTTP")
        With Retrieval
        .Open "Get", url, False, "", ""
        .Send
        GetBody = .ResponseBody
        End With
        Set Retrieval = Nothing
End Function

Function BytesToBstr(body,Cset)
        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 = Cset
        BytesToBstr = objstream.ReadText
        objstream.Close
        set objstream = nothing
End Function
Function Newstring(wstr,strng)
        Newstring=Instr(lcase(wstr),lcase(strng))
        if NewstringEnd Function
%>


   

Dim wstr,str,url,start,over,dtime
dtime=Year(Date)&"年"&Month(Date)&"月"&Day(Date)&"日"
url="http://www.qianhuaweb.com/"
        wstr=getHTTPPage(url)
        start=Newstring(wstr,dtime)
        over=Newstring(wstr,"

")
 body=mid(wstr,start,over-start)

response.write ""&body&""


%>


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