Web::Scraper 㧠XPath 㨠CSS セレクタを混ãœã¦ä½¿ã†ä¾‹ - Tociyuki::Diary
Web::Scraper ã¯ã„ãŸã‚Œã‚Šã¤ãã›ã‚Šã®ä»•æŽ›ã‘ãŒä»•è¾¼ã‚“ã§ã‚ã£ã¦ã€ä¾¿åˆ©ã§ã™ã。ç§ãŒã€å‰²ã¨è‰¯ã使ã£ã¦ã„る機能ã¯ä»¥ä¸‹ 2 ã¤ã§ã™ã€‚ process ã®ç¬¬ä¸€å¼•æ•°ã«ã€CSS セレクタã ã‘ã§ãªãã€XPath も指定ã§ãã¾ã™ã€‚ãŸã ã—ã€XPath を指定ã™ã‚‹ã¨ãã¯å…ˆé ã‚’å¿…ãšã‚¹ãƒ©ãƒƒã‚·ãƒ¥(/)ã§å§‹ã‚ãªã‘ã‚Œã°ã„ã‘ã¾ã›ã‚“。 process ã®ç¬¬äºŒå¼•æ•°ä»¥é™ã®ã€å€¤ã‚’ã©ã“ã‹ã‚‰å–å¾—ã™ã‚‹ã‹ã‚’指定ã™ã‚‹éƒ¨åˆ†ã«ã€ã‚³ãƒ¼ãƒ‰ãƒ»ãƒªãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ã‚’ç½®ãã“ã¨ã‚‚ã§ãã¾ã™ã€‚ã“れを使ã†ã¨ã€DOM ツリーä¸ã®å€¤ã‚’åŠ å·¥ã—ã¦æŠ½å‡ºã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ 具体例ã¨ã—ã¦ã€ãƒ‡ã‚¤ãƒªãƒ¼ãƒãƒ¼ã‚¿ãƒ«Zã®ã‚¢ãƒ¼ã‚«ã‚¤ãƒ–一覧ã®ä¸ã‹ã‚‰ã¹ã¤ã‚„ãã‚Œã„ã•ã‚“ã®ã‚¨ãƒ³ãƒˆãƒªã‚’抽出ã—ã¦ã¿ã‚‹ã“ã¨ã«ã—ã¾ã™ã€‚ã¾ãšã€ã‚¢ãƒ¼ã‚«ã‚¤ãƒ–・ページã®ã‚¨ãƒ³ãƒˆãƒªéƒ¨åˆ†ã‚’å–り出ã—ã¦ã‚„ã‚‹ã¨ã€ã“ã†ãªã£ã¦ã„ã¾ã™ã€‚ <TD width="580" valign="top" class="tx12px"> <P> <B><FONT c
サイトã®ã‚¯ãƒãƒ¼ãƒªãƒ³ã‚°ã«ã¯ScrappyãŒã™ã”ãã„ã„ã‹ã‚‚ã—ã‚Œãªã„ - Perl勉強メモ　アルパカDiary出張版
クãƒãƒ¼ãƒªãƒ³ã‚°æ¥½ã—ã„ã§ã™ã‚ˆãï¼ perlã§é«˜é€Ÿã«ã‚¯ãƒãƒ¼ãƒ«ã—ãŸã„ã®ã§ã‚ã‚Œã°Gunghoãªã©ä½¿ã†ã®ãŒã„ã„ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ãŒã€ 基本手軽ã«ã‚„ã‚ŠãŸã„ã“ã¨ãŒå¤šã„ã®ã§ WWW::Mechanize+Web::Scraper ã¨ã„ã†çµ„ã¿åˆã‚ã›ã§ã‚¯ãƒãƒ¼ãƒ«ã™ã‚‹ã®ãŒå®šç•ªã§ã—ãŸã€‚ ã—ã‹ã—ãŸã¾ãŸã¾ Scrappy を知り〠少ã—触ã£ã¦ã¿ãŸã¨ã“ã‚ã™ã”ãã„ã„ã®ã§ã¯ãªã„ã‹ï¼ï¼Ÿã¨æ€ã„ 記事ã«ã—ã¦ã¿ã¾ã—ãŸã€‚*1 基本系(crawlコマンドを利用ã™ã‚‹å ´åˆ) my $scrappy = Scrappy->new; $scrappy->crawl('１．クãƒãƒ¼ãƒ«ã™ã‚‹ãƒ«ãƒ¼ãƒˆURL', '２．URLã«ãƒžãƒƒãƒã™ã‚‹ãƒ‘ス' => { '３．コンテンツã«ãƒžãƒƒãƒã™ã‚‹xpath or CSSセレクタ' => sub { my ($self, $item) = @_; # ４．ã‚ューã«è¿½åŠ $self->queue->add($item->{href
JavaScriptã®DOM Core基礎 - 三ç‰å…µ
Coreã®ç°¡æ˜“リファレンス。Coreã¯è¦ç´ ã‚’å‚ç…§ã—ãŸã‚Šã€ç›¸å¯¾ä½ç½®ã‹ã‚‰å‘¨ã‚Šã®ãƒŽãƒ¼ãƒ‰ã‚’å‚ç…§ã—ãŸã‚Šã€è¦ç´ を生æˆã™ã‚‹ã¨ã„ã£ãŸéƒ¨åˆ†ã€‚主ã«åˆ©ç”¨ã™ã‚‹ã§ã‚ã‚ã†ãƒ—ãƒãƒ‘ティやメソッドã¯ã‚«ãƒãƒ¼ã—ã¦ã„ã‚‹ã¤ã‚‚ã‚Šã§ã™ã‘ã©ã€ã“れも入れã¨ã‘ã£ã¦ã®ã‚ã£ãŸã‚‰æ•™ãˆã¦ãã ã•ã„。 ã“ã®ã‚ãŸã‚Šã¯åœ°å‘³ã§ä½¿ã„ã¥ã‚‰ããã®ä¸Šç†è§£ã—ã«ãã„ã¨ã„ã†æ®‹å¿µãªéƒ¨åˆ†ã€‚ãµã¨å¿˜ã‚ŒãŸã¨ãã«ä½¿ã†å€‹äººçš„ãªã‚‚ã®ã§ã™ãŒã€æ…¢æ€§jQuery拒絶症候群ãªäººã‚ˆã‹ã£ãŸã‚‰ã©ã†ãžã€‚ãã‚Œã«ã—ã¦ã‚‚æš‘ã„。ガリガリå›ãŠã„ã—ã„ã。 DOMã¨ã¯ã€‚ Document Object Model (DOM) ã¯ã€HTML ãŠã‚ˆã³ XML ドã‚ュメントã®ãŸã‚ã® API ã§ã™ã€‚ã“ã‚Œã¯ãƒ‰ã‚ュメントã®æ§‹é€ çš„ãªè¡¨ç¾ã‚’æä¾›ã—ã€å†…容や表示形態ã®å¤‰æ›´ã‚’å¯èƒ½ã«ã—ã¾ã™ã€‚端的ã«è¨€ãˆã°ã€Web ページをスクリプトやプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžã¨ã¤ãªãよã†ãªæ©Ÿæ§‹ã§ã™ã€‚ https://developer.mozilla.org/ja/
How to map CSS selectors to XPath queries // plasmasturm.org
Over in the use Perl journals, Tatsuhiko Miyagawa wondered whether CSS selectors can be translated to XPath – which, of course, they can. Like him, however, I discovered that there isn’t any easily found table of equivalents that shows how selectors map to queries (though quite a lot of working Javascript to do such a conversion). Maybe that’s because to people versed in XPath, it’s really quite s
HTML::TreeBuilder ã®ãƒ¡ã‚½ãƒƒãƒ‰ã‚’覚ãˆã‚‹ã«ã¯äººç”Ÿã¯ã¿ã˜ã‹ã™ãŽã‚‹ä»¶ã«ã¤ã„㦠- tokuhirom's blog
HTML::TreeBuilder ã®ãƒ¡ã‚½ãƒƒãƒ‰ã‚’覚ãˆã‚‹ã«ã¯äººç”Ÿã¯ã¿ã˜ã‹ã™ãŽã‚‹ä»¶ã«ã¤ã„㦠HTML::TreeBuilder ã® ->lookup ã ã® ->find ã ã®ã‚’覚ãˆã‚‹ã®ã¯ã€å¦ç¿’ã®åŠ¹çŽ‡ãŒã‚ˆããªã„。ã¤ã¶ã—ãŒãã‹ãªã„ã®ã§ã€ã‚‚ã£ã¨ä¸€èˆ¬çš„㪠CSS Selector ã‚„ XPath ãªã©ã‚’覚ãˆã¦ã€ãれをã¤ã‹ã£ãŸæ–¹ãŒãŠå¾—ã§ã‚ã‚‹ã¨ã„ãˆã‚‹ã€‚ HTML::TreeBuilder 㧠XPath を利用ã™ã‚‹ã«ã¯ã€HTML::TreeBuilder::XPath をインストールã™ã‚Œã°ã‚ˆãã€ã“れ㯠pure perl ãªã®ã§å®¹æ˜“ã«åˆ©ç”¨ã§ãる。 my $tree = HTML::TreeBuilder::XPath->new; $tree->parse($content); my @items = $tree->findnodes(q{//*[@id='topicsfb']//li}); print $
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A very brief primer to thinking in XPath // plasmasturm.org
http://wedata.net/
http://www.joehewitt.com/blog/files/getElementsBySelector.js
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