HtmlAgility\u662f\u4e00\u4e2a\u5f00\u6e90\u7684Html\u89e3\u6790\u5e93\uff0c\u636e\u8bf4\u662fC#\u7248\u7684JQuery\uff0c\u529f\u80fd\u975e\u5e38\u5f3a\u5927\u3002<\/p>\n

\u8be5\u7bc7\u5b66\u4e60\u5b83\u7684\u89e3\u6790\u529f\u80fd\uff0c\u8fd8\u53ef\u4ee5\u6a21\u62df\u7528\u6237\u8bf7\u6c42,\u521b\u5efahtml,\u8bbe\u7f6e\u4ee3\u7406\u7b49\u7b49\uff0c\u6682\u5148\u4e0d\u7814\u7a76\u3002<\/p>\n

—————————————————————————-<\/p>\n

\n
$\"\u590d\u5236\u4ee3\u7801\"$ <\/a><\/span><\/div>\n
using System;\r\nusing System.Collections.Generic;\r\nusing System.Linq;\r\nusing System.Text;\r\nusing System.Net;\r\n\r\nusing HtmlAgilityPack;\r\n\r\nnamespace ConsoleApplication1\r\n{\r\n class Program\r\n {\r\n static void Main(string[] args)\r\n {\r\n HtmlWeb webClient = new HtmlWeb();\r\n HtmlDocument doc = webClient.Load(\"http:\/\/www.baidu.com\");\r\n var rootNode = doc.DocumentNode;\r\n HtmlNodeCollection categoryNodeList = rootNode.SelectNodes(\"\/\/html[1]\/body[1]\");\r\n foreach (var item in categoryNodeList)\r\n {\r\n Console.WriteLine(\"item: \" + item.Name);\r\n }\r\n\r\n Console.Read();\r\n }\r\n }\r\n}<\/pre>\n
$\"\u590d\u5236\u4ee3\u7801\"$ <\/a><\/span><\/div>\n<\/div>\n
\u7b97\u662f\u7b2c\u4e00\u4e2aHellow world\uff0c\u6252\u7684\u767e\u5ea6\u9875\u9762\u3002<\/p>\n
—————————————————————————-<\/p>\n
2.\u8bfb\u53d6<\/strong><\/p>\n
\u90a3\u4e48\uff0c\u5982\u679c\u662f\u8f7d\u5165\u672c\u5730\u7684Html\u6216\u8005\u76f4\u63a5\u8bfb\u6d41\uff0c\u5b57\u7b26\u4e32\u3002\u53ef\u4ee5\u8fd9\u4e48\u505a<\/p>\n
\n
HtmlDocument doc = new HtmlDocument();\r\ndoc.Load(@\"D:\\xxx.mht\", Encoding.UTF8, false);<\/pre>\n<\/div>\n
\n
\n
public void LoadHtml(string html);\/\/\u76f4\u63a5\u8bfb\u5b57\u7b26\u4e32\u5316\u7684html\r\npublic void Load(Stream stream);\/\/\u6d41\r\npublic void Load(string path);\/\/\u672c\u5730\u8def\u5f84<\/pre>\n<\/div>\n
\n
HtmlDocumen\u5176\u672c\u8eab\u4e5f\u63d0\u4f9b\u68c0\u6d4b\u7f16\u7801\u7684\u65b9\u6cd5\u3002<\/p>\n
HtmlWeb\u4e3b\u8981\u662f\u81ea\u52a8\u68c0\u6d4b\u7f16\u7801\uff0c\u5982\u679c\u8981\u81ea\u5b9a\u4e49\u7f16\u7801\u53ef\u4ee5\u6539\u5176\u4e2d\u5c5e\u6027\u3002OverrideEncoding,\u00a0AutoDetectEncoding\u3002\u800cHtmlDocument\u5bf9\u7f16\u7801\u7684\u64cd\u4f5c\u53cd\u800c\u4e0d\u4e00\u6837\uff0c\u6307\u5b9a\u5728\u53c2\u6570\u4e2d\uff0c\u4f30\u8ba1\u662f\u81ea\u52a8\u68c0\u6d4b\u7f16\u7801\u5df2\u7ecf\u5f88\u5f3a\u5927\u4e86\u628a\uff0c\u5f88\u5c11\u8981\u81ea\u5df1\u6307\u5b9a\u3002\u3002\u3002\u3002<\/p>\n
\n
—————————————————————————-<\/p>\n
3.\u8282\u70b9\u9009\u62e9<\/strong><\/p>\n
\n
rootNode.SelectNodes\r\nrootNode.SelectSingleNode<\/pre>\n<\/div>\n
\u9009\u62e9\u8282\u70b9\u548c\u9009\u62e9\u5355\u4e2a\u8282\u70b9\u3002<\/p>\n
\u7528SelectNodes\u4e3a\u4f8b\uff0c\u770b\u4e00\u4e0b\u53c2\u6570<\/p>\n
\n
rootNode.SelectNodes(\"\/\/html[1]\/body[1]\");<\/pre>\n<\/div>\n
“\/\/”\u53cc\u659c\u6760\u8868\u793a\u4ece\u6839\u8282\u70b9\u67e5\u627e\u6240\u6709\u5b50\u8282\u70b9<\/p>\n
“\/”\u5355\u659c\u6760\u8868\u793a\u53ea\u67e5\u627e\u7b2c\u4e00\u5c42\u5b50\u8282\u70b9<\/p>\n
“.\/”\u70b9\u659c\u6760\u8868\u793a\u4ece\u5f53\u524d\u8282\u70b9\u5f00\u59cb\u67e5\u627e<\/p>\n
\n
[]\u4e2d\u62ec\u53f7\u4e2d\u7684\u4ee3\u8868\u76f8\u540c\u540d\u5b57\u7684\u5b50\u8282\u70b9\u7d22\u5f15\u3002<\/p>\n
\n
var resultList = rootNode.SelectNodes(\"\/\/html[1]\/body[1]\/div[1]\/div[position()<5]\");\/\/\u53d6\u524d4\u4e2a\u5143\u7d20\r\nresultList = rootNode.SelectNodes(\"\/\/html[1]\/body[1]\/div[1]\/div[last()]\");\/\/\u53d6\u6700\u540e1\u4e2a\u5143\u7d20\r\nresultList = rootNode.SelectNodes(\"\/\/html[1]\/body[1]\/div[1]\/div[@id]\");\/\/\u53d6\u6240\u6709\u6709id\u5c5e\u6027\u7684\u5143\u7d20\r\nresultList = rootNode.SelectNodes(\"\/\/html[1]\/body[1]\/div[1]\/div[@id='head']\");\/\/\u53d6\u5c5e\u6027id\u503c\u4e3ahead\u7684\u5143\u7d20<\/pre>\n<\/div>\n
\u66f4\u591a\u5c5e\u6027\u53ef\u4ee5\u5728W3SCHOOL\u67e5\u770bhttp:\/\/www.w3school.com.cn\/xpath\/xpath_functions.asp<\/a><\/p>\n
\n
\u00a0\u53d6\u5c5e\u6027<\/p>\n
\n
doc.Attributes[\"id\"];<\/pre>\n<\/div>\n
\u00a0\u53d6\u5143\u7d20<\/p>\n
\n
doc.GetElementbyId(\"id\");<\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
HtmlAgility\u662f\u4e00\u4e2a\u5f00\u6e90\u7684Html\u89e3\u6790\u5e93\uff0c\u636e\u8bf4\u662fC#\u7248\u7684JQuery\uff0c\u529f …<\/p>\n
\u7ee7\u7eed\u9605\u8bfb »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[228],"class_list":["post-954","post","type-post","status-publish","format-standard","hentry","tag-html"],"views":473,"_links":{"self":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/954","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/comments?post=954"}],"version-history":[{"count":0,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/954\/revisions"}],"wp:attachment":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/media?parent=954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/categories?post=954"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/tags?post=954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}