HTMLParser妯″潡鏄疨ython涓竴涓湁鐢ㄧ殑宸ュ叿锛岀敤浜庤В鏋怘TML鏂囨。銆傚畠鎻愪緵浜嗕竴绉嶇畝鍗曡屽己澶х殑鏂瑰紡鏉ユ彁鍙栧拰澶勭悊HTML鏍囪鍜屽唴瀹广
鎴戜滑闇瑕佸鍏TMLParser妯″潡銆傚湪Python涓紝鍙互浣跨敤浠ヤ笅璇彞鏉ュ疄鐜帮細`from html.parser import HTMLParser`銆
鎴戜滑闇瑕佸垱寤轰竴涓被鏉ョ户鎵縃TMLParser銆傚湪杩欎釜绫讳腑锛屾垜浠彲浠ラ噸鍐欎竴浜涙柟娉曟潵澶勭悊HTML鏍囪鍜屽唴瀹广備緥濡傦紝`handle_starttag()`鏂规硶鍙互鍦ㄩ亣鍒板紑濮嬫爣璁版椂琚皟鐢紝`handle_data()`鏂规硶鍙互鍦ㄩ亣鍒板唴瀹规椂琚皟鐢紝`handle_endtag()`鏂规硶鍙互鍦ㄩ亣鍒扮粨鏉熸爣璁版椂琚皟鐢ㄣ
浣跨敤HTMLParser妯″潡鏃讹紝鎴戜滑鍙互浣跨敤杩欎簺鏂规硶鏉ユ彁鍙栧拰澶勭悊HTML涓殑鏁版嵁銆備緥濡傦紝鎴戜滑鍙互鍦╜handle_starttag()`鏂规硶涓鏌ユ爣璁扮被鍨嬶紝骞舵牴鎹渶瑕佹墽琛屼竴浜涙搷浣溿傚悓鏍凤紝鎴戜滑鍙互鍦╜handle_data()`鏂规硶涓幏鍙栧唴瀹癸紝骞跺湪闇瑕佹椂杩涜澶勭悊銆
姝ゅ锛孒TMLParser妯″潡杩樻彁渚涗簡涓浜涘叾浠栨湁鐢ㄧ殑鏂规硶鍜屽睘鎬с備緥濡傦紝`feed()`鏂规硶鍙互灏咹TML鏂囨。浼犻掔粰瑙ｆ瀽鍣ㄨ繘琛岃В鏋愶紝`handle_charref()`鏂规硶鍙互澶勭悊瀛楃寮曠敤锛宍handle_entityref()`鏂规硶鍙互澶勭悊瀹炰綋寮曠敤锛宍handle_comment()`鏂规硶鍙互澶勭悊娉ㄩ噴绛夈
瀹夎妯″潡锛
npm install htmlparserhtmlparser鎻愪緵鏋勯犲嚱鏁帮細
function Parser(handler) {
this._handler = handler;
}
from html.parser import HTMLParser
from html.entities import name2codepoint
class MyHTMLParser(HTMLParser):
def handle_starttag(self, tag, attrs):
print('<%s>' % tag)
def handle_endtag(self, tag):
print('</%s>' % tag)
def handle_startendtag(self, tag, attrs):
print('<%s/>' % tag)
def handle_data(self, data):
print(data)
def handle_comment(self, data):
print('<!--', data, '-->')
def handle_entityref(self, name):
print('&%s;' % name)
def handle_charref(self, name):
print('&#%s;' % name)
parser = MyHTMLParser()
parser.feed('''<html>
<head></head>
<body>
<!-- test html parser -->
<p>Some <a href=\"#\">html</a> HTML tutorial...<br>END</p>
</body></html>''')
HTML鏈川涓婃槸XML鐨勫瓙闆嗭紝浣嗘槸HTML鐨勮娉曟病鏈塜ML閭ｄ箞涓ユ牸锛屽ぇ瀹朵篃鍙互灏濊瘯鍒╃敤HTMLParser瑙ｆ瀽HTML銆
鐭ヨ瘑鐐规墿灞曪細
甯哥敤鏂规硶浠嬬粛
l feed(data)锛氫富瑕佺敤浜庢帴鍙楀甫html鏍囩鐨剆tr锛屽綋璋冪敤杩欎釜鏂规硶鏃跺苟鎻愪緵鐩稿簲鐨刣ata鏃讹紝鏁翠釜瀹炰緥锛坕nstance锛夊紑濮嬫墽琛岋紝缁撴潫鎵цclose()銆
l handle_starttag(tag, attrs): 杩欎釜鏂规硶鎺ユ敹Parse_starttag杩斿洖鐨則ag鍜宎ttrs锛屽苟杩涜澶勭悊锛屽鐞嗘柟寮忛氬父鐢变娇鐢ㄨ呰繘琛岃鐩栵紝鏈韩涓虹┖銆
渚嬪锛岃繛鎺ョ殑start tag鏄<a>锛岄偅涔堝搴旂殑鍙傛暟tag锛'a'锛堝皬鍐)銆俛ttrs鏄痵tart tag <>涓殑灞炴э紝浠ュ厓缁勫舰寮忥紙name, value锛夎繑鍥烇紙鎵鏈夎繖浜涘唴瀹归兘鏄皬鍐欙級銆
渚嬪锛屽浜<A HREF="http://www.odweb.cn鈥>锛岄偅涔堝唴閮ㄨ皟鐢ㄥ舰寮忎负锛歨andle_starttag锛'a',[(鈥榟ref','http://www.odweb.cn)]锛.
l handle_endtag(tag)锛氳窡涓婅堪涓鏍凤紝鍙槸澶勭悊鐨勬槸缁撴潫鏍囩锛屼篃灏辨槸浠</寮澶寸殑鏍囩銆
l handle_data(data)锛氬鐞嗙殑鏄綉椤电殑鏁版嵁锛屼篃灏辨槸寮濮嬫爣绛惧拰缁撴潫鏍囩涔嬮棿鐨勫唴瀹广備緥濡傦細<script>...</script>鐨勭渷鐣ュ彿鍐呭
l handle_comment(data) 锛屽鐞嗘敞閲婏紝<!-- -->涔嬮棿鐨勬枃鏈
l reset()锛氬皢瀹炰緥閲嶇疆锛屽寘鎷綔涓哄弬鏁拌緭鍏ョ殑鏁版嵁杩涜娓呯┖銆
浠ヤ笂灏辨槸python涓璈TMLParser妯″潡鐭ヨ瘑鐐规荤粨鐨勮缁嗗唴瀹癸紝鏇村淇℃伅璇峰叧娉∣D浜戝叾瀹冪浉鍏虫枃绔狅紒
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