{"id":95030,"date":"2026-08-16T01:01:06","date_gmt":"2026-08-15T17:01:06","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/95030.html"},"modified":"2026-08-16T01:01:06","modified_gmt":"2026-08-15T17:01:06","slug":"xpath%e6%8a%80%e5%b7%a7%ef%bc%9a%e7%94%a8-after%e7%b2%be%e5%87%86%e6%8f%90%e5%8f%96%e6%96%87%e6%9c%ac","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/95030.html","title":{"rendered":"XPath\u6280\u5de7\uff1a\u7528-after\u7cbe\u51c6\u63d0\u53d6\u6587\u672c"},"content":{"rendered":"

\"\u4f7f\u7528<\/p>\n

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\u4e8e\u5f00\u5c55\u7f51\u9875\u6570\u636e\u6293\u53d6\u4e4b\u9645, \u6216\u8005 XML \u6587\u6863\u89e3\u6790\u4e4b\u65f6, XPath \u4e43\u662f\u4e00\u79cd\u9887\u5177\u5f3a\u5927\u529b\u91cf\u7684\u5de5\u5177, \u5176\u7528\u9014\u5728\u4e8e\u5bf9\u6587\u6863\u91cc\u7684\u5143\u7d20\u4ee5\u53ca\u5c5e\u6027\u4e88\u4ee5\u5b9a\u4f4d\u4ee5\u53ca\u63d0\u53d6\u3002\u7136\u800c, \u6709\u65f6\u4e00\u5473\u76f4\u63a5\u8fd0\u7528 text() \u51fd\u6570, \u6709\u53ef\u80fd\u6ca1\u529e\u6cd5\u83b7\u53d6\u5230\u76ee\u6807\u6587\u672c\u4e4b\u5904, \u7279\u522b\u662f\u5f53\u5904\u4e8e\u6587\u672c\u8282\u70b9\u5468\u8fb9\u5b58\u5728\u522b\u7684\u5143\u7d20\u6216\u8005\u7a7a\u767d\u5b57\u7b26\u7684\u60c5\u5f62\u4e4b\u4e0b\u3002\u672c\u6587\u5c06\u4f1a\u9610\u8ff0\u501f\u52a9 XPath \u7684-after\u51fd\u6570\u53bb\u89e3\u51b3\u8bf8\u5982\u6b64\u7c7b\u95ee\u9898\u7684\u529e\u6cd5, \u5e76\u4e14\u7ed9\u51fa\u8be6\u5c3d\u793a\u4f8b\u5c55\u793a\u3002<\/p>\n

\u95ee\u9898\u63cf\u8ff0<\/p>\n

\u7ed9\u5b9a\u8fd9\u6837\u4e00\u4e9b HTML \u4ee3\u7801\u7247\u6bb5\u5f62\u6210\u7684\u60c5\u51b5, \u5176\u76ee\u7684\u5728\u4e8e\u4ece\u4e2d\u63d0\u53d6\u51fa\u90a3\u4e00\u6bb5\u6587\u672c, \u5373"Aug 7, 2019 at 9:34 am ET"\u3002<\/p>\n<\/p>\n

Author | Aug 7, 2019 at 9:34 am ET
\nAuthor | Aug 7, 2019 at 9:34 am ET<\/p>\n

\u5982\u679c\u76f4\u63a5\u4f7f\u7528 \/\/span<\/p>\n

@class="meta"<\/p>\n

\u8fd9\u6837\u7684 XPath \u8868\u8fbe\u5f0f \/text() , \u6709\u53ef\u80fd\u6ca1\u529e\u6cd5\u83b7\u5f97 \u671f\u671b\u7684\u7ed3\u679c , \u7f18\u7531\u5728\u4e8e text() \u51fd\u6570 \u8fd4\u56de\u7684\u53ef\u4e0d\u662f\u5176\u4ed6\u7279\u5b9a \u800c\u662f\u6240\u6709\u6587\u672c\u8282\u70b9\u7684\u96c6\u5408 , \u5e76\u4e14\u76ee\u6807\u6587\u672c \u4e5f\u8bb8\u5e76\u4e0d\u662f\u7b2c\u4e00\u4e2a\u6587\u672c\u8282\u70b9 , \u53c8\u6216\u8005\u524d\u9762\u6709\u7a7a\u767d\u5b57\u7b26\u3002<\/p>\n

\u89e3\u51b3\u65b9\u6848：\u4f7f\u7528 -after \u51fd\u6570<\/p>\n

-\u201cafter\u201d\u51fd\u6570\u80fd\u591f\u4ece\u4e00\u4e2a\u5b57\u7b26\u4e32\u91cc\u63d0\u53d6\u6307\u5b9a\u5206\u9694\u7b26\u4e4b\u540e\u7684\u90a3\u90e8\u5206\u5185\u5bb9, \u5b83\u5177\u6709\u5982\u4e0b\u8fd9\u822c\u7684\u8bed\u6cd5:<\/p>\n<\/p>\n

substring-after(string, substring) <\/p>\n

\u5176\u4e2d， \u662f\u8981\u641c\u7d22\u7684\u5b57\u7b26\u4e32， \u662f\u5206\u9694\u7b26\u3002<\/p>\n

\u4e8e\u8fd9\u4e2a\u793a\u4f8b\u60c5\u5f62\u5f53\u4e2d, \u6211\u4eec\u80fd\u591f\u8fd0\u7528 -after \u51fd\u6570\u53bb\u63d0\u53d6 \u201c | \u201d \u4e4b\u540e\u6240\u5448\u73b0\u7684\u5185\u5bb9\u3002\u9996\u5148\u5462, \u6211\u4eec\u5f97\u627e\u5bfb\u5230\u6db5\u76d6\u76ee\u6807\u6587\u672c\u7684 span \u5143\u7d20\u6240\u5904\u4f4d\u7f6e\u3002\u5176\u4e2d\u4e00\u79cd\u529e\u6cd5\u662f\u501f\u52a9 span\/a\/@rel="" \u6765\u786e\u5b9a\u5305\u542b\u4f5c\u8005\u94fe\u63a5\u7684 span \u5143\u7d20\u6240\u5728\u4e4b\u5904\u3002<\/p>\n

3.14.2<\/p>\n

3.2025\u5e7412\u67085\u65e5\u53d1\u5e03\u7684\u90a3\u7f16\u7a0b\u8bed\u8a00\u7a33\u5b9a\u7248\u672c\u662f14.2 , \u8fd9\u4e2a\u7248\u672c\u5c5e\u4e8e3.14\u7cfb\u5217\u91cc\u7684\u7b2c\u4e8c\u4e2a\u7ef4\u62a4\u66f4\u65b0\u3002\u5b83\u5305\u542b\u4e8618\u9879\u4fee\u590d , \u7740\u91cd\u89e3\u51b3\u4e86\u591a\u8fdb\u7a0b \u3001\u6570\u636e\u7c7b\u4ee5\u53ca\u6b63\u5219\u8868\u8fbe\u5f0f\u7b49\u6a21\u5757\u7684\u56de\u5f52\u95ee\u9898 , \u5904\u7406\u4e86\u5982CVE-2025-12084\u7b49\u5b89\u5168\u6f0f\u6d1e\u3002\u6b64\u7248\u672c\u610f\u5473\u7740\u81ea\u7531\u7ebf\u7a0b\u6a21\u5f0f（\u79fb\u9664GIL）\u6b63\u5f0f\u5f97\u5230\u5b98\u65b9\u652f\u6301 , \u662f\u4e00\u4e2a\u53d1\u5c55\u7684\u91cd\u8981\u91cc\u7a0b\u7891\u3002<\/p>\n

\u4e0b\u8f7d<\/p>\n

\u63a5\u7740, \u5c31\u80fd\u8fd0\u7528 -after \u51fd\u6570\u53bb\u63d0\u53d6" |" \u4e4b\u540e\u6240\u5448\u73b0\u7684\u5185\u5bb9\u3002\u5176\u5b8c\u6574\u7684 XPath \u8868\u8fbe\u5f0f\u662f\u8fd9\u6837\u7684:<\/p>\n<\/p>\n

substring-after(\/\/span[span\/a\/@rel="author"],' |') <\/p>\n

\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u5148\u662f\u53bb\u627e\u5230\u5305\u542b\u4f5c\u8005\u94fe\u63a5\u7684span\u5143\u7d20, \u63a5\u7740\u4ece\u4e2d\u63d0\u53d6\u8be5\u5143\u7d20\u5b57\u7b26\u4e32\u503c\u91cc\u5728\u201c | \u201d\u4e4b\u540e\u7684\u90a3\u90e8\u5206, \u4e5f\u5c31\u662f\u201cAug 7, 2019 at 9:34 am ET\u201d\u3002<\/p>\n

\u793a\u4f8b\u4ee3\u7801 ( + lxml)<\/p>\n

\u5982\u4e0b\u662f\u8fd0\u7528 , \u4ee5\u53ca lxml \u5e93, \u53bb\u5b9e\u65bd\u4e0a\u8ff0 XPath \u8868\u8fbe\u5f0f\u7684\u793a\u4f8b\u4ee3\u7801:<\/p>\n

from lxml import html
\nhtml_string = """<\/p>\n

Author | Aug 7, 2019 at 9:34 am ET<\/p>\n

"""
\ntree = html.fromstring(html_string)
\nxpath_expression = "substring-after(\/\/span[span\/a\/@rel='author'],' |')"
\nresult = tree.xpath(xpath_expression)
\nprint(result)
\nAuthor | Aug 7, 2019 at 9:34 am ET<\/p>\n

"""
\ntree = html.fromstring(html_string)
\nxpath_expression = "substring-after(\/\/span[span\/a\/@rel='author'],' |')"
\nresult = tree.xpath(xpath_expression)
\nprint(result)<\/p>\n

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\u6ce8\u610f\u4e8b\u9879<\/p>\n

\u603b\u7ed3<\/p>\n

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Csdn.rsyais.cN\/Article\/details\/22746.sHtML Csdn.rsyais.cN\/Article\/details\/13776.sHtML Csdn.rsyais.cN\/Article\/details\/23056.sHtML Csdn.rsyais.cN\/Article\/details\/55641.sHtML Csdn.rsyais.cN\/Article\/details\/99459.sHtML Csdn.rsyais.cN\/Article\/details\/69001.sHtML Csdn.rsyais.cN\/Article\/details\/79756.sHtML Csdn.rsyais.cN\/Article\/details\/53356.sHtML Csdn.rsyais.cN\/Article\/details\/67661.sHtML Csdn.rsyais.cN\/Article\/details\/91176.sHtML Csdn.rsyais.cN\/Article\/details\/18717.sHtML Csdn.rsyais.cN\/Article\/details\/50517.sHtML Csdn.rsyais.cN\/Article\/details\/61941.sHtML Csdn.rsyais.cN\/Article\/details\/13613.sHtML Csdn.rsyais.cN\/Article\/details\/53937.sHtML Csdn.rsyais.cN\/Article\/details\/91642.sHtML Csdn.rsyais.cN\/Article\/details\/58951.sHtML Csdn.rsyais.cN\/Article\/details\/96125.sHtML Csdn.rsyais.cN\/Article\/details\/96469.sHtML Csdn.rsyais.cN\/Article\/details\/85379.sHtML Csdn.rsyais.cN\/Article\/details\/77425.sHtML 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