写了段批量抓取某个列表页的东东

160 阅读 0 评论 106 点赞

我是靠谱客的博主跳跃香氛，最近开发中收集的这篇文章主要介绍写了段批量抓取某个列表页的东东，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

有些人当抓取程序是个宝，到目前还TND有人在卖钱，强烈BS一下这些家伙真是的！可能偶下边这段东西比较烂哈
下边这个没有写入库功能，已经到这一步了，入库功能是很简单的事了，需要的请自己去完成吧，其它功能各位自行完善吧！把代码拷贝过去直接运行即可看到效果

Dim Url,List_PageCode,Array_ArticleID,i,ArticleID
Dim Content_PageCode,Content_TempCode
Dim Content_CategoryID,Content_CategoryName,BorderID,ClassID,BorderName,ClassName
Dim ArticleTitle,ArticleAuthor,ArticleFrom,ArticleContent

Url = "http://www.webasp.net/article/class/1.htm"
List_PageCode = getHTTPPage(Url)
List_PageCode = RegExpText(List_PageCode,"打印</th></tr>","</table><table border=0 cellpadding=5",0)
List_PageCode = RegExpText(List_PageCode,"<td align=left><a href='../","'><img border=0 src='../images/authortype0.gif'",1)    '取得当前列表页的文章链接，以,分隔
Array_ArticleID = Split(List_PageCode,",")    '创建数组，存储文章ID

For i=0 To Ubound(Array_ArticleID)-1
    ArticleID = Array_ArticleID(i)    '文章ID
    Content_PageCode = getHTTPPage("http://www.webasp.net/article/"&ArticleID)    '取得文章页的内容

    '=========取文章分类及相关ID参数开始=======================
    Content_TempCode = RegExpText(Content_PageCode,"<a href=""/article/"">技术教程</a> >> ",">> 内容</td>",0)
    Content_CategoryID = RegExpText(Content_PageCode,"<a href='../class","/'>",1)
    BorderID = Split(Content_CategoryID,",")(0)    '大类ID
    ClassID = Split(Content_CategoryID,",")(1)    '子类ID
        '==========检查大类是否存在开始===============
        '如果不存在则入库

        '==========检查大类是否存在结束===============
    'Response.Write(BorderID & "," & ClassID & "<br />")
    Content_CategoryName = RegExpText(Content_PageCode,"/'>","</a>",1)
    BorderName = Split(Content_CategoryName,",")(0)    '大类名称
    ClassName = Split(Content_CategoryName,",")(1)    '子类名称
        '==========检查子类是否存在开始===============
        '如果不存在则入库

        '==========检查子类是否存在结束===============
    '=========取文章分类及相关ID参数结束=======================

    '=========取文章标题及内容开始=============================
    ArticleTitle = RegExpText(Content_PageCode,"<tr><td align=center bgcolor=#DEE2F5><strong>","</strong></td></tr>",0)
    ArticleAuthor = RegExpText(Content_PageCode,"<tr><td><span class=blue>作者：</span>","</td></tr>",0)
    ArticleFrom = RegExpText(Content_PageCode,"<tr><td><span class=blue>来源：</span>","</td></tr>",0)
    ArticleContent = RegExpText(Content_PageCode,"<tr><td class=content style=""WORD-WRAP: break-word"" id=zoom>","</td></tr>"&VBCrlf&"        </table>"&VBCrlf&"    </td></tr></table>",0)
    '=========取文章标题及内容结束=============================
    Response.Write(ArticleTitle& "<br /><br />")
    Response.Flush()
Next

附几个函数：

Function getHTTPPage(url)
    IF(IsObjInstalled("Microsoft.XMLHTTP") = False)THEN
        Response.Write "<br><br>服务器不支持Microsoft.XMLHTTP组件"
        Err.Clear
        Response.End
    END IF
    On Error Resume Next
    Dim http
    SET http=Server.CreateObject("Msxml2.XMLHTTP")
    Http.open "GET",url,False
    Http.send()
    IF(Http.readystate<>4)THEN
        Exit Function
    END IF
    getHTTPPage=BytesToBSTR(Http.responseBody,"GB2312")
    SET http=NOTHING
    IF(Err.number<>0)THEN
        Response.Write "<br><br>获取文件内容出错"
        'Response.End
        Err.Clear
    END IF
End Function


Function BytesToBstr(CodeBody,CodeSet)
    Dim objStream
    SET objStream = Server.CreateObject("adodb.stream")
    objStream.Type = 1
    objStream.Mode =3
    objStream.Open
    objStream.Write CodeBody
    objStream.Position = 0
    objStream.Type = 2
    objStream.Charset = CodeSet
    BytesToBstr = objStream.ReadText
    objStream.Close
    SET objStream = NOTHING
End Function

'================================================
'作  用：检查组件是否已经安装
'返回值：True  ----已经安装
'        False ----没有安装
'================================================
Function IsObjInstalled(objName)
    On Error Resume Next
    IsObjInstalled = False
    Err = 0
    Dim testObj
    SET testObj = Server.CreateObject(objName)
    IF(0 = Err)THEN IsObjInstalled = True
    SET testObj = NOTHING
    Err = 0
End Function

Function RegExpText(strng,strStart,strEnd,n)
    Dim regEx,Match,Matches,RetStr
    SET regEx = New RegExp
    regEx.Pattern = strStart&"([\s\S]*?)"&strEnd
    regEx.IgnoreCase = True
    regEx.Global = True
    SET Matches = regEx.Execute(strng)
    For Each Match in Matches
        IF(n=1)THEN
            RetStr = RetStr & regEx.Replace(Match.Value,"$1") & ","
        ELSE
            RetStr = RetStr & regEx.Replace(Match.Value,"$1")
        END IF
    Next
    RegExpText = RetStr
    SET regEx=NOTHING
End Function