php - HTMLパーサーは、特定のものを特定のタグに保持したいだけです

Question

HTMLデータを解析したい。タグ自体だけでなく、気にしないタグ内にあるすべてのデータを削除したいと思います。特定のスパンクラス内にあるデータのみを保持したい。ただし、スパンタグも削除してください。

おそらく、これのためにオンラインで事前に構築されたスクリプトがすでにありますか？そうでない場合は、それを実行するための最良の方法は何でしょうか、ありがとう。

score 1 · Accepted Answer

さて、なぜですか？酔っぱらいの部屋のように、すべてのドキュメントが頭の中で渦巻いているように見えたときのことを思い出します。

これについてはさまざまな方法がありますが、上記のコメントで1つだけ紹介しました。それを行うために私が見ることができる3つの方法は次のとおりです。

スパンのリストを取得し、適切なクラスを確認し、クラスがターゲットクラスである場合はテキストを取得します。
ターゲットスパンのみがtgtクラスを持つと想定します。このクラス名の要素のリストを取得し、リスト内のすべての要素のテキストを取得します。
DOM関数を使用して、tgtclassNameを持つすべてのスパンのリストを取得します。リスト内のすべての要素のテキストを取得します。

グーグル検索ページからの結果を使用した簡単なサンプル：

Javascript：

// getElementsByTagName, getElementsByClass - both return a NodeList
// it is accessed in the same way as an array - with the [] operators, but it's
// not an array object - this is a function that allows us to still iterate through it
// in much the same way.
function forEachNode(nodeList, func)
{
    var i, n = nodeList.length;
    for (i=0; i<n; i++)
    {
        func(nodeList[i], i, nodeList);
    }
}

function grabTextFromSpans()
{
    //
    //  1. - assume elements other than span will possess the target className.
    //       onlty get elements that are (a) a span and (b) have the right className
    var spanList = document.getElementsByTagName('span');
    var validList = [], stringList = [];

    forEachNode(spanList, function(curItem){ if (curItem.className == 'st') validList.push(curItem);} );

    validList.forEach( function(elem){ stringList.push(elem.innerText);} );
    var mStr = '';
    stringList.forEach(function(elem){mStr += elem + "\n";});
    alert(mStr);


    //
    //  2. - assume only the target elements will possess the target className
    //
    var mStr = '';
    var tgtList = document.getElementsByClassName('st');
    forEachNode(tgtList, function(curElem){mStr += curElem.innerText + "\n";} );
    alert(mStr);


    //
    // 3. - assume that tgt elements are spans and have a specific className
    //
    var mStr = '';
    var tgtList = document.querySelectorAll('span.st');
    forEachNode(tgtList, function(curElem){mStr += curElem.innerText + "\n";} );
    alert(mStr);
}

HTML：

<ol eid="S-WYUPKzGI7JmAWAr4CwBw" id="rso"><!--m--><li class="g"><div class="vsc" sig="u1z">  <div data-ved="0CCQQkgowAA">  <div data-ved="0CCUQkQowAA"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://bebraw.github.com/colorjs/" class="l" onmousedown="return rwt(this,'','','','1','AFQjCNFuHzNJryRAA9QBjqC1250RDZAMCQ','','0CCYQFjAA',null,event)">Colorjs by bebraw</a></h3><div class="s"><div class="f kv"><cite>bebraw.github.com/colorjs/</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:eSrglCqgBAkJ:bebraw.github.com/colorjs/+&amp;cd=1&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','1','AFQjCNEm0e9Xr7p0eOh7TWkQ81JoqWQNfQ','','0CCcQIDAA',null,event)">Cached</a></span></div><div class="esc slp" id="poS0" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">colorjs provides simple API that may be used to create colors (<em>RGBA</em>, <em>HSVA</em>, <em>HSLA</em>) and perform various color related operations (conversions and such).<br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="kDj">  <div data-ved="0CCkQkgowAQ">  <div data-ved="0CCoQkQowAQ"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="https://github.com/bebraw/colorjs" class="l" onmousedown="return rwt(this,'','','','2','AFQjCNFRF9AfGrmbF5E6IhyKId0ztwA7sQ','','0CCsQFjAB',null,event)">bebraw/colorjs · GitHub</a></h3><div class="s"><div class="f kv"><cite>https://github.com/bebraw/colorjs</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:WtA6gOF2ZqEJ:https://github.com/bebraw/colorjs+&amp;cd=2&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','2','AFQjCNHqdXwTalbWocgzhnaRA1EKTkyMzQ','','0CCwQIDAB',null,event)">Cached</a></span></div><div class="esc slp" id="poS1" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">colorjs provides simple API that may be used to create colors (<em>RGBA</em>, <em>HSVA</em>, <em>HSLA</em>) and perform various color related operations (conversions and such).<br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="PWh">  <div data-ved="0CC4QkgowAg">  <div data-ved="0CC8QkQowAg"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://www.pygame.org/docs/ref/color.html" class="l" onmousedown="return rwt(this,'','','','3','AFQjCNFFK5xPcE_2Yl9D8NhHmBbb_Y8UJg','','0CDAQFjAC',null,event)">color - Pygame Documentation</a></h3><div class="s"><div class="f kv"><cite>www.pygame.org/docs/ref/color.html</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:zXwLCILEH14J:www.pygame.org/docs/ref/color.html+&amp;cd=3&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','3','AFQjCNGwtfM-FoMMusa6z3-GjN68_lw5BQ','','0CDEQIDAC',null,event)">Cached</a>&nbsp;-&nbsp;<a href="/search?hl=en&amp;safe=off&amp;q=related:www.pygame.org/docs/ref/color.html+hlsa+hsva+rgba&amp;tbo=1&amp;sa=X&amp;ei=S-WYUPKzGI7JmAWAr4CwBw&amp;ved=0CDIQHzAC">Similar</a></span></div><div class="esc slp" id="poS2" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">Color.<em>hsva</em> - Gets or sets the <em>HSVA</em> representation of the Color. Gets or sets the <b>...</b> Color.<em>hsla</em> - Gets or sets the <em>HSLA</em> representation of the Color. Gets or sets <b>...</b> Color.normalize - Returns the normalized <em>RGBA</em> values of the Color. Returns the <b>...</b><br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="8Ft">  <div data-ved="0CDQQkgowAw">  <div data-ved="0CDUQkQowAw"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://softimage.wiki.softimage.com/sdkdocs/sicppsdk/html/classXSI_1_1MATH_1_1CColor4f.html" class="l" onmousedown="return rwt(this,'','','','4','AFQjCNFu-Fgfc5DxRWUiz6rFQcmtu8VxQw','','0CDYQFjAD',null,event)">CColor4f Class Reference</a></h3><div class="s"><div class="f kv"><cite>softimage.wiki.softimage.com/.../classXSI_1_1MATH_1_1CColor4f....</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:a3m9eQIkVpcJ:softimage.wiki.softimage.com/sdkdocs/sicppsdk/html/classXSI_1_1MATH_1_1CColor4f.html+&amp;cd=4&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','4','AFQjCNE2tLroL_B4pfp_-yHsgN77HgygkA','','0CDcQIDAD',null,event)">Cached</a></span></div><div class="esc slp" id="poS3" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">Detailed Description. A color class represented by single floating values. CColor4f supports the <em>RGBA</em>, <em>HSVA</em> and <em>HLSA</em> color models.<br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="E2M">  <div data-ved="0CDkQkgowBA">  <div data-ved="0CDoQkQowBA"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://api.call-cc.org/doc/imlib2" class="l" onmousedown="return rwt(this,'','','','5','AFQjCNHJCEk0145qLjFUDow7uz6--d9ecQ','','0CDsQFjAE',null,event)">imlib2 | chickadee</a></h3><div class="s"><div class="f kv"><cite>api.call-cc.org/doc/imlib2</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:f3rEHKk7xdQJ:api.call-cc.org/doc/imlib2+&amp;cd=5&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','5','AFQjCNFIOeaytJwKaUCFahhv0rZYsCrtNA','','0CDwQIDAE',null,event)">Cached</a></span></div><div class="esc slp" id="poS4" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">Create a color specifier for the given <em>RGBA</em> values. (color/<em>hsva h s v a</em>) =&gt; color procedure. Create a color specifier for the given <em>HSVA</em> values. (color/<em>hlsa h l s a</em>) <b>...</b><br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="QIQ">  <div data-ved="0CD4QkgowBQ">  <div data-ved="0CD8QkQowBQ"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://download.autodesk.com/global/docs/softimage2013/en_us/userguide/files/shaderpresets690.htm" class="l" onmousedown="return rwt(this,'','','','6','AFQjCNEcMDDSe_MGltcAPZgdz_Xba5qhrA','','0CEAQFjAF',null,event)">Softimage User's Guide: Scalar Matte</a></h3><div class="s"><div class="f kv"><cite>download.autodesk.com/global/docs/.../en.../shaderpresets690.htm</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:7EBn3t17As0J:download.autodesk.com/global/docs/softimage2013/en_us/userguide/files/shaderpresets690.htm+&amp;cd=6&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','6','AFQjCNH9A6Y1UtnSCaNB5fq9oEMv6l6dIQ','','0CEEQIDAF',null,event)">Cached</a></span></div><div class="esc slp" id="poS5" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">Determines which color model you will select a color from: <em>RGBA</em>, <em>HLSA</em>, or <em>HSVA</em>. Channel. Selects the color channel. You can only select from this parameter if <b>...</b><br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="ziI">  <div data-ved="0CEMQkgowBg">  <div data-ved="0CEQQkQowBg"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://packages.python.org/python-igraph/igraph.drawing.colors-module.html" class="l" onmousedown="return rwt(this,'','','','7','AFQjCNFXOQ9ZwDTXEYanvZb2l-be3NWrvg','','0CEUQFjAG',null,event)">igraph.drawing.colors.color_name_to_rgba</a></h3><div class="s"><div class="f kv"><cite>packages.python.org/python.../igraph.drawing.colors-module.html</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:YiCWholHT38J:packages.python.org/python-igraph/igraph.drawing.colors-module.html+&amp;cd=7&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','7','AFQjCNE-O44T9i6KfHzrDu2_TN6q5khIDg','','0CEYQIDAG',null,event)">Cached</a></span></div><div class="esc slp" id="poS6" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="f">10+ items – </span><span class="st">Converts a color given by its <em>RGBA</em> coordinates to <em>HSVA</em> <b>...</b><br></span><table class="tsnip"><tbody><tr><td>hsla_to_rgba</td><td>l</td><td>1.0</td><td>Converts a color given by its <em>HSLA</em> coordinates (hue <b>...</b></td></tr><tr><td>rgba_to_hsva</td><td>b</td><td>1.0</td><td>Converts a color given by its <em>RGBA</em> coordinates to <b>...</b></td></tr></tbody></table></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="ELy">  <div data-ved="0CEkQkgowBw">  <div data-ved="0CEoQkQowBw"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://xrvg.rubyforge.org/rdoc/classes/XRVG/Color.html" class="l" onmousedown="return rwt(this,'','','','8','AFQjCNFa4U6Y0BceJtaHJrjPYBL9uluwiQ','','0CEsQFjAH',null,event)">Class: XRVG::Color</a></h3><div class="s"><div class="f kv"><cite>xrvg.rubyforge.org/rdoc/classes/XRVG/Color.html</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:xzEzVZQqjlsJ:xrvg.rubyforge.org/rdoc/classes/XRVG/Color.html+&amp;cd=8&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','8','AFQjCNHAiQ1acFXS45OCe2dh8t04dv79Zw','','0CEwQIDAH',null,event)">Cached</a></span></div><div class="esc slp" id="poS7" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st"><b>...</b> blue complement format255 g g= green grey hsl <em>hsla hsla</em> hsv <em>hsva hsva</em> hue <b>...</b> rgb2h rgb2hsl rgb2hsv rgb2sl rgb2sv <em>rgba</em> saturation svg value white yellow <b>...</b><br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc" sig="AMw">  <div data-ved="0CE4QkgowCA">  <div data-ved="0CE8QkQowCA"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://pygame.readthedocs.org/en/latest/ref/color.html" class="l" onmousedown="return rwt(this,'','','','9','AFQjCNFAhMqlvpl3nu5ke-K5EGXFjdObuA','','0CFAQFjAI',null,event)">pygame.Color — Pygame v1.9.2 documentation</a></h3><div class="s"><div class="f kv"><cite>pygame.readthedocs.org/en/latest/ref/color.html</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:y8n_BdkVwnMJ:pygame.readthedocs.org/en/latest/ref/color.html+&amp;cd=9&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','9','AFQjCNFUzsehzHw76YNkL-4oahK-n-JvIA','','0CFEQIDAI',null,event)">Cached</a></span></div><div class="esc slp" id="poS8" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">Color.<em>hsva</em>, —, Gets or sets the <em>HSVA</em> representation of the Color. <b>...</b> The Color class represents <em>RGBA</em> color values using a value range of 0-255. <b>...</b> The <em>HSLA</em>  components are in the ranges H = [0, 360], S = [0, 100], V = [0, 100], A = [0, 100].<br></span></div></div><!--n--></li><!--m--><li class="g"><div class="vsc">  <div data-ved="0CFMQkgowCQ">  <div data-ved="0CFQQkQowCQ"> </div>   </div><div class="vspib" aria-label="Result details" role="button" tabindex="0"><div class="vspii"><div class="vspiic"></div></div></div>   <h3 class="r"><a href="http://pypixel.googlecode.com/svn-history/r5/trunk/pypixel.py" class="l" onmousedown="return rwt(this,'','','','10','AFQjCNFn-7_0BAq_upcNihBWBYg3GediLg','','0CFUQFjAJ',null,event)">#!/usr/bin/python # # TODO # Thread pypixel so that the end user <b>...</b></a></h3><div class="s"><div class="f kv"><cite>pypixel.googlecode.com/svn-history/r5/trunk/pypixel.py</cite><span class="vshid"><a href="http://webcache.googleusercontent.com/search?q=cache:-prP6iP75CAJ:pypixel.googlecode.com/svn-history/r5/trunk/pypixel.py+&amp;cd=10&amp;hl=en&amp;ct=clnk&amp;gl=au" onmousedown="return rwt(this,'','','','10','AFQjCNE0O_xZcdco81OFkgu3JTMawmr5LQ','','0CFYQIDAJ',null,event)">Cached</a></span></div><div class="esc slp" id="poS9" style="display:none">You +1'd this publicly.&nbsp;<a href="#" class="fl">Undo</a></div><span class="st">TODO # Write color wrapper for <em>HSVA</em>, <em>HSLA</em>, <em>RGBA</em> # import random as randy import pygame from pygame.locals import * # Screen size WIDTH = 640 HEIGHT <b>...</b><br></span></div></div><!--n--></li></ol>

php - HTMLパーサーは、特定のものを特定のタグに保持したいだけです

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