1

したがって、私の問題は、多くのフォーラム投稿を個別のtxtファイルに抽出して、現在ハードドライブにあることです。各ファイルには抽出したい情報が含まれており、そのうちのいくつかは既に抽出方法を把握しています。抽出する必要がある情報は次の形式です。

同じ「html ブロッ​​ク」内

1: このスレッドの (x) 件のメッセージ
2: メッセージは (いくつかの html コード) A HREF="link" (いくつかの html コード =

タスク 1 では、単に x を抽出する
必要があります。タスク 2 では、メッセージの返信先のリンクを抽出する必要があります。

さまざまな tm および XML パッケージを調べましたが、実際に何を使用するかを見つけることができませんでした。アドバイスをいただければ幸いです。

これは、txtファイルの1つがどのように見えるかです

`<HTML>
<HEAD>
<TITLE>Dear LEGO : 5668 </TITLE>
<META NAME="ROBOTS" CONTENT="ALL, INDEX, FOLLOW">
<META NAME="KEYWORDS" CONTENT="lego, legos, legoland, toy, construction, community, education, technic, mindstorms, toolo, duplo, primo, dacta">
<META NAME="DESCRIPTION" CONTENT="Dear LEGO : 5668 - LUGNET: The international fan-created LEGOÆ Users Group Network. A place for LEGOÆ fans of all ages to find information, meet one another, and share ideas. As an independent site by fans, for fans, it is neither sponsored nor endorsed by the LEGO Company.">
<SCRIPT LANGUAGE="JavaScript" SRC="http://www.lugnet.com/js/common.js"></SCRIPT>
</HEAD>

<BODY
 LEFTMARGIN=0 TOPMARGIN=0 MARGINWIDTH=0 MARGINHEIGHT=0
 BGCOLOR="#FFFFFF" TEXT="#000000" xLINK="#0000FF" xVLINK="#501080" xALINK="#B0C8EC">  <TABLE BORDER=0 CELLPADDING=9 CELLSPACING=0 WIDTH="100%" BGCOLOR="#B0C8EC">
  <TR ALIGN=CENTER VALIGN=BOTTOM>

    <TD ALIGN=LEFT><NOBR><A TARGET="_top" HREF="http://www.lugnet.com/"><IMG BORDER=0 WIDTH=28 HEIGHT=44 HSPACE=10 VSPACE=0 SRC="/news/icon-home.gif" ALT="To LUGNET Homepage"></A><A TARGET="_top" HREF="http://news.lugnet.com/"><IMG BORDER=0 WIDTH=27 HEIGHT=44 HSPACE=10 VSPACE=0 SRC="/news/icon-news.gif" ALT="To LUGNET News Homepage"></A><A TARGET="_top" HREF="http://guide.lugnet.com/"><IMG BORDER=0 WIDTH=37 HEIGHT=44 HSPACE=10 VSPACE=0 SRC="/news/icon-guide.gif" ALT="To LUGNET Guide Homepage"></A></NOBR><BR></TD>       <FORM NAME="search" ACTION="http://www.lugnet.com/search.cgi" METHOD=POST
       onSubmit="return(MetaSearch(document.search))">  <TD>
        <INPUT TYPE=HIDDEN NAME="category" VALUE="/dear-lego/">
        <NOBR><SELECT NAME="scope">
          <OPTION VALUE="SetGuide">Set Reference
          <OPTION VALUE="QuickSet">Set Reference (Popup)
          <OPTION VALUE="PartsRef">Parts Reference  <OPTION VALUE="News">News
          <OPTION VALUE="NewsRel" SELECTED>News (Dear LEGO)         </SELECT>&nbsp;<A HREF="http://www.lugnet.com/help/search/"><IMG BORDER=0 WIDTH=16 HEIGHT=16 HSPACE=0 VSPACE=0 SRC="http://www.lugnet.com/help/help.gif" ALT="Help on Searching"></A></NOBR><BR>  <NOBR><INPUT TYPE=TEXT NAME="query" VALUE="" SIZE=16 MAXLENGTH=200><SMALL>&nbsp;<INPUT TYPE=SUBMIT NAME="SUBMIT" VALUE="Search"></SMALL></NOBR><BR>
      </TD>
      </FORM> 

    <TD ALIGN=RIGHT><NOBR><A HREF="/news/post/?lugnet.dear-lego"><IMG BORDER=0 WIDTH=22 HEIGHT=44 HSPACE=10 VSPACE=0 SRC="/news/icon-post.gif" ALT="Post new message to lugnet.dear-lego"></A><A HREF="news://lugnet.com/lugnet.dear-lego"><IMG BORDER=0 WIDTH=30 HEIGHT=44 HSPACE=10 VSPACE=0 SRC="/news/icon-nntp.gif" ALT="Open lugnet.dear-lego in your NNTP Newsreader"></A><A HREF="http://news.lugnet.com/news/traffic/"><IMG BORDER=0 WIDTH=32 HEIGHT=44 HSPACE=10 VSPACE=0 SRC="/news/icon-traffic.gif" ALT="To LUGNET News Traffic Page"></A><IMG BORDER=0 WIDTH=3 HEIGHT=44 HSPACE=6 VSPACE=0 SRC="/news/icon-sep.gif"><A HREF="http://www.lugnet.com/people/members/sign-in/"><IMG BORDER=0 WIDTH=37 HEIGHT=44 HSPACE=0 VSPACE=0 SRC="/news/icon-signin-key.gif" ALT="Sign In (Members)"></A></NOBR><BR></TD>

  </TR> 
</TABLE>
<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH="100%" BGCOLOR="#8899BB"><TR><TD><SPACER TYPE=BLOCK WIDTH=1 HEIGHT=1></TD></TR></TABLE>  <TABLE BORDER=0 CELLPADDING=7 CELLSPACING=0 WIDTH="100%" BGCOLOR="#E8F0FF"> <TR ALIGN=CENTER VALIGN=CENTER>
        <TD COLSPAN=2 ALIGN=CENTER VALIGN=CENTER>
<script type="text/javascript"><!--
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src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
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        </TD>
      </TR> <TR ALIGN=LEFT VALIGN=CENTER>  <TD>  <BIG><FONT FACE="Geneva,Arial,Helvetica">
        &nbsp;<A HREF="/dear-lego/">Dear&nbsp;LEGO</A>&nbsp;<FONT COLOR="#8899BB">/</FONT>  5668  <BR></FONT></BIG>  </TD>  <TD ALIGN=RIGHT><SMALL><FONT FACE="Geneva,Arial,Helvetica">
        <A HREF="/dear-lego/?n=5667">5667</A>&nbsp;&nbsp;|&nbsp;&nbsp;<A HREF="/dear-lego/?n=5669">5669</A>
      <BR></SMALL></FONT></TD>  </TR>

</TABLE>
<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH="100%" BGCOLOR="#8899BB"><TR><TD><SPACER TYPE=BLOCK WIDTH=1 HEIGHT=1></TD></TR></TABLE>  <!-- google_ad_section_start --> <CENTER>  <TABLE BORDER=0 CELLPADDING=16 CELLSPACING=0 WIDTH="100%"><TR><TD ALIGN=LEFT>    <TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0><TR ALIGN=LEFT VALIGN=TOP><TD>  <TABLE BORDER=0 CELLPADDING=8 CELLSPACING=0>

      <TR BGCOLOR="#E0E0E0"><TD ALIGN=LEFT> <TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH="100%"><TR ALIGN=CENTER VALIGN=TOP>  <TD ALIGN=LEFT VALIGN=TOP>

    <TABLE BORDER=0 CELLPADDING=2 CELLSPACING=0>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">Subject:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1"><BIG><BIG><B>Online PAB and Design-by-me needs more parts for Lego Train</B></BIG></BIG><BR></FONT></TD>

          </TR>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">Author:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1"><B>Benjamin Medinets</B><BR></FONT></TD>

          </TR>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">Newsgroups:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1"><A HREF="/dear-lego/">lugnet.dear-lego</A>, <A HREF="/trains/">lugnet.trains</A><BR></FONT></TD>

          </TR>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">Followup-To:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1"><A HREF="/trains/">lugnet.trains</A><BR></FONT></TD>

          </TR>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">Date:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1">Thu, 6 Oct 2011 03:44:44 GMT<BR></FONT></TD>

          </TR>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">From:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1"><FONT COLOR="#7070A0">Benjamin Medinets &lt;bmedinets@excite.com+stopspammers+&gt;</FONT><BR></FONT></TD>

          </TR>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">Highlighted:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1"><FONT COLOR="#D57F7F"><B>!</B></FONT> 

<A HREF="/news/ahh.cgi?lugnet.dear-lego,5668">(details)</A><BR></FONT></TD>

          </TR>  <TR VALIGN=MIDDLE>

            <TD ALIGN=RIGHT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#7070A0" SIZE="-1">Viewed:&nbsp;<BR></FONT></TD>

            <TD ALIGN=LEFT><FONT FACE="Geneva,Arial,Helvetica" COLOR="#333366" SIZE="-1">3013 times<BR></FONT></TD>

          </TR>  </TABLE>

    </TD>  <TD WIDTH=20>&nbsp;&nbsp;</TD>

      <TD ALIGN=CENTER VALIGN=TOP>

      <FONT FACE="Geneva,Arial,Helvetica" SIZE="-2"><A HREF="/news/raw.cgi?lugnet.dear-lego,5668">View Raw<BR>Message</A><BR><BR></FONT>  <A HREF="/news/post/?lugnet.dear-lego,5668"><IMG BORDER=0 WIDTH=30 HEIGHT=44 HSPACE=10 VSPACE=10 SRC="/news/icon-reply.gif" TITLE="Post a public reply to this message"></A><BR>  </TD>  </TR></TABLE> </TD></TR>

      <TR BGCOLOR="#F0F0F0"><TD ALIGN=LEFT NOWRAP><TT>I was using Lego Digital Designer and am disappointed the downhill availabilty<BR>
of certain important parts to build &quot;buyable&quot; models.<BR>
<BR>
I would like to see a return of &quot;warehouse&quot; sliding doors to make<BR>
box cars.<BR>
<BR>
Train-style doors would also be nice as well as train windows (both in<BR>
2x3 and 4x3)... please.<BR>
<BR>
I looked at the instructions to build a mail car from the 7722, and<BR>
found that I really only need 2 red sliding rail doors, the pair of<BR>
&quot;decorated train doors&quot; and a set of two 2x3 thin yellow train<BR>
windows.<BR>
<BR>
Yes, there was a bit of minor substitution but it is mostly distiguishable<BR>
as the model.<BR>
<BR>
Here is what it looks like:<BR>
<BR>
<A HREF="http://www.lugnet.com/jump.cgi?http://www.brickshelf.com/gallery/medib/lego-fun/7722mailvan.jpg">http://www.brickshelf.com/gallery/medib/lego-fun/7722mailvan.jpg</A><BR>
<BR>
Yeah I know... where are the f-in doors???<BR>
<BR>
<BR>
Ben<BR>
</TT>
</TD></TR>

      <TR BGCOLOR="#E0E0E0"><TD ALIGN=LEFT></TD></TR>

    </TABLE> <BR> <BR>  <FONT FACE="Verdana,Geneva,Helvetica" SIZE="-1" COLOR="#990000">



      <B>1 Message in This Thread:</B><BR> <NOBR><IMG WIDTH=9 HEIGHT=11 VSPACE=2 SRC="/news/here.gif" TITLE="You are here"></NOBR><BR><NOBR></NOBR>
 <DL>

      <DT>Entire Thread on One Page:

      <SMALL><FONT COLOR="#000000">

        <DD><B>Nested:&nbsp;</B>

        <A HREF="/dear-lego/?n=5668&t=i&v=a">All</A> | <A HREF="/dear-lego/?n=5668&t=i&v=b">Brief</A> | <A HREF="/dear-lego/?n=5668&t=i&v=c">Compact</A> | <A HREF="/dear-lego/?n=5668&t=i&v=d">Dots</A>

        <BR><B>Linear:&nbsp;</B>

        <A HREF="/dear-lego/?n=5668&t=f&v=a">All</A> | <A HREF="/dear-lego/?n=5668&t=f&v=b">Brief</A> | <A HREF="/dear-lego/?n=5668&t=f&v=c">Compact</A>

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4

2 に答える 2

0

次のリンクが表示される場合があります。

HTMLページのテキスト要素のみを抽出する簡単な方法はRにありますか?

あなたの質問に最も合うと思います

于 2012-09-09T14:23:42.250 に答える
0

それがあなたの文字列である場合、 strsplit を使用して、文字列 'A HREF="' で囲まれたマテリアルを取得できます

txt <- '</TABLE> <BR> <BR>  <FONT FACE="Verdana,Geneva,Helvetica" SIZE="-1" COLOR="#990000"><B>

    Message has 2 Replies: </B></FONT><BR>   <TABLE BORDER=0 CELLPADDING=0 CELLSPACING=0 WIDTH="100%"> <TR VALIGN=TOP BGCOLOR="#E0E0E0"><TD ALIGN=LEFT><A HREF="/dear-lego/?n=14"><IMG BORDER=5 HEIGHT=3 WIDTH=3 SRC="/news/x.gif"></A></TD><TD><FONT SIZE="-2">&nbsp;&nbsp;</FONT></TD><TD ALIGN=LEFT><FONT FACE="Verdana,Geneva,Helvetica" SIZE="-2"><A HREF="/dear-lego/?n=14">Re: Plate Paks</A><BR></FONT></TD><TD ALIGN=RIGHT><FONT FACE="Verdana,Geneva,Helvetica" SIZE="-2">&nbsp;Tom Stangl<BR></FONT></TD></TR><TR BGCOLOR="#F8F8F8"><TD COLSPAN=4 ALIGN=LEFT VALIGN=TOP><FONT FACE="Verdana,Geneva,Helvetica" SIZE="-2" '

これは 2 番目のフラグメントです。

> strsplit(txt, split='A HREF="')[[1]][2]
[1] "/dear-lego/?n=14\"><IMG BORDER=5 HEIGHT=3 WIDTH=3 SRC=\"/news/x.gif\"></A></TD><TD><FONT SIZE=\"-2\">&nbsp;&nbsp;</FONT></TD><TD ALIGN=LEFT><FONT FACE=\"Verdana,Geneva,Helvetica\" SIZE=\"-2\"><"

おそらく実際の XML および HTML 処理ステップがありますが、通常はすべてのヘッダーを含む例が必要であり、それらはすべて削除されています。

于 2012-09-08T22:37:01.997 に答える