{"id":817,"date":"2015-02-28T15:09:56","date_gmt":"2015-02-28T07:09:56","guid":{"rendered":"http:\/\/www.daliane.com\/?p=817"},"modified":"2015-02-28T15:34:12","modified_gmt":"2015-02-28T07:34:12","slug":"node_js_yi_bu_te_xing_chu_ti_yan","status":"publish","type":"post","link":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/node_js_yi_bu_te_xing_chu_ti_yan\/","title":{"rendered":"Node.js\u5f02\u6b65\u7279\u6027\u521d\u4f53\u9a8c\uff08\u91c7\u96c6\u5668\u96cf\u5f62\uff09"},"content":{"rendered":"

Node.js \u603b\u662f\u5439\u725b\u903c\u8bf4\u81ea\u5df1\u5f02\u6b65\u7279\u6027\u591a\u4e48\u591a\u4e48\u5389\u5bb3\uff0c\u4f46\u662f\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u8981\u627e\u4e00\u4e2a\u80fd\u597d\u597d\u5229\u7528\u5f02\u6b65\u7684\u573a\u666f\u4e0d\u5bb9\u6613\u3002\u6211\u60f3\u6765\u60f3\u53bb\uff0c\u722c\u866b\u7684\u573a\u666f\u5c31\u6bd4\u8f83\u9002\u5408\uff0c\u6ca1\u4e8b\u5c31\u5f02\u6b65\u5e76\u53d1\u5730\u722c\u51e0\u4e2a\u7f51\u7ad9\u73a9\u73a9\u3002<\/p>\n

\u6211\u4eec\u8fd9\u56de\u9700\u8981\u7528\u5230\u4e09\u4e2a\u4f9d\u8d56\uff0c\u5206\u522b\u662f express\uff0csuperagent \u548c cheerio\u3002<\/p>\n

\u5148\u4ecb\u7ecd\u4e00\u4e0b\uff0c<\/p>\n

superagent(http:\/\/visionmedia.github.io\/superagent\/<\/a> ) \u662f\u4e2a http \u65b9\u9762\u7684\u5e93\uff0c\u53ef\u4ee5\u53d1\u8d77 get \u6216 post \u8bf7\u6c42\u3002<\/p>\n

cheerio(https:\/\/github.com\/cheeriojs\/cheerio<\/a> ) \u5927\u5bb6\u53ef\u4ee5\u7406\u89e3\u6210\u4e00\u4e2a Node.js \u7248\u7684 jquery\uff0c\u7528\u6765\u4ece\u7f51\u9875\u4e2d\u4ee5 css selector \u53d6\u6570\u636e\uff0c\u4f7f\u7528\u65b9\u5f0f\u8ddf jquery \u4e00\u6837\u4e00\u6837\u7684\u3002<\/p>\n

\u8fd8\u8bb0\u5f97\u6211\u4eec\u600e\u4e48\u65b0\u5efa\u4e00\u4e2a\u9879\u76ee\u5417\uff1f<\/p>\n

    \n
  1. \u65b0\u5efa\u4e00\u4e2a\u6587\u4ef6\u5939\uff0c\u8fdb\u53bb\u4e4b\u540e npm init<\/code><\/li>\n
  2. \u5b89\u88c5\u4f9d\u8d56 npm install --save PACKAGE_NAME<\/code><\/li>\n
  3. \u5199\u5e94\u7528\u903b\u8f91<\/li>\n<\/ol>\n

    \u6211\u4eec\u5e94\u7528\u7684\u6838\u5fc3\u903b\u8f91\u957f\u8fd9\u6837<\/p>\n

     <\/p>\n

    \n
    app.get('<\/span>\/'<\/span><\/span>, function<\/span> (req<\/span>, res<\/span>, next<\/span>) {\r\n  \/\/ \u7528 superagent \u53bb\u6293\u53d6 http:\/\/www.daliane.com\/ \u7684\u5185\u5bb9<\/span>\r\n  superagent.get('<\/span>http:\/\/www.daliane.com\/'<\/span><\/span>)\r\n    .end(function<\/span> (err<\/span>, sres<\/span>) {\r\n      \/\/ \u5e38\u89c4\u7684\u9519\u8bef\u5904\u7406<\/span>\r\n      if<\/span> (err) {\r\n        return<\/span> next(err);\r\n      }\r\n      \/\/ sres.text \u91cc\u9762\u5b58\u50a8\u7740\u7f51\u9875\u7684 html \u5185\u5bb9\uff0c\u5c06\u5b83\u4f20\u7ed9 cheerio.load \u4e4b\u540e<\/span>\r\n      \/\/ \u5c31\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u5b9e\u73b0\u4e86 jquery \u63a5\u53e3\u7684\u53d8\u91cf\uff0c\u6211\u4eec\u4e60\u60ef\u6027\u5730\u5c06\u5b83\u547d\u540d\u4e3a `$`<\/span>\r\n      \/\/ \u5269\u4e0b\u5c31\u90fd\u662f jquery \u7684\u5185\u5bb9\u4e86<\/span>\r\n      var<\/span> $ =<\/span> cheerio.load<\/span>(sres.text<\/span>);\r\n      \u00a0var items = [];\r\n $('section.content h1.entry-title a').each(function (idx, element) {\r\n var $element = $(element);\r\n items.push({\r\n title: $element.attr('title'),\r\n href: $element.attr('href')\r\n });\r\n });\r\n\r\n      res.send<\/span>(items);\r\n    });\r\n});\r\n\r\n<\/pre>\n<\/blockquote>\n
    OK\uff0c\u4e00\u4e2a\u7b80\u5355\u7684\u722c\u866b\u5c31\u662f\u8fd9\u4e48\u7b80\u5355\u3002\u8fd9\u91cc\u6211\u4eec\u8fd8\u6ca1\u6709\u5229\u7528\u5230 Node.js \u7684\u5f02\u6b65\u5e76\u53d1\u7279\u6027\u3002\u4e0d\u8fc7\u4e0b\u4e24\u7ae0\u5185\u5bb9\u90fd\u662f\u5173\u4e8e\u5f02\u6b65\u63a7\u5236\u7684\u3002<\/p>\n
    \u5177\u4f53\u7684\u5b9e\u65bd\u3002<\/p>\n
    \u00a0[irteam@CGDLUIT7501 lesson2]$ npm install –save superagent
    \nnpm WARN package.json studynodejs@1.0.0 No repository field.
    \nnpm WARN package.json studynodejs@1.0.0 No README data
    \nsuperagent@0.21.0 node_modules\/superagent
    \n\u251c\u2500\u2500 extend@1.2.1
    \n\u251c\u2500\u2500 methods@1.0.1
    \n\u251c\u2500\u2500 cookiejar@2.0.1
    \n\u251c\u2500\u2500 component-emitter@1.1.2
    \n\u251c\u2500\u2500 reduce-component@1.0.1
    \n\u251c\u2500\u2500 qs@1.2.0
    \n\u251c\u2500\u2500 mime@1.2.11
    \n\u251c\u2500\u2500 formidable@1.0.14
    \n\u251c\u2500\u2500 readable-stream@1.0.27-1 (isarray@0.0.1, inherits@2.0.1, string_decoder@0.10 .31, core-util-is@1.0.1)
    \n\u251c\u2500\u2500 debug@2.1.1 (ms@0.6.2)
    \n\u2514\u2500\u2500 form-data@0.1.3 (async@0.9.0, combined-stream@0.0.7)
    \n[irteam@CGDLUIT7501 lesson2]$ npm install –save cheerio
    \nnpm WARN package.json studynodejs@1.0.0 No repository field.
    \nnpm WARN package.json studynodejs@1.0.0 No README data
    \ncheerio@0.18.0 node_modules\/cheerio
    \n\u251c\u2500\u2500 entities@1.1.1
    \n\u251c\u2500\u2500 lodash@2.4.1
    \n\u251c\u2500\u2500 dom-serializer@0.0.1 (domelementtype@1.1.3)
    \n\u251c\u2500\u2500 CSSselect@0.4.1 (domutils@1.4.3, CSSwhat@0.4.7)
    \n\u2514\u2500\u2500 htmlparser2@3.8.2 (domelementtype@1.1.3, domutils@1.5.1, entities@1.0.0, dom handler@2.3.0, readable-stream@1.1.13)
    \n[irteam@CGDLUIT7501 lesson2]$ rm index.js
    \n[irteam@CGDLUIT7501 lesson2]$ vi index.js
    \n[irteam@CGDLUIT7501 lesson2]$ node index.js<\/p><\/blockquote>\n
    \u6267\u884c\u7ed3\u679c\uff1a<\/p>\n
    \n
    [{\"title\":\"\u8be6\u7ec6\u9605\u8bfb Node.js\u5f02\u6b65\u7279\u6027\u521d\u4f53\u9a8c\",\"href\":\"http:\/\/www.daliane.com\/node_js_yi_bu_te_xing_chu_ti_yan\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb node.js\u7684package.json\u4ee5\u53ca\u5916\u90e8\u6a21\u5757\",\"href\":\"http:\/\/www.daliane.com\/node_js_de_package_json_yi_ji_wai_bu_mo_kuai\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb node.js\u6700\u7b80\u5355\u7684 express \u5e94\u7528\",\"href\":\"http:\/\/www.daliane.com\/node_js_zui_jian_dan_de_express_ying_yong\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb \u5982\u4f55\u5728linux\u4e0a\u642d\u5efa Node.js \u5f00\u53d1\u73af\u5883\",\"href\":\"http:\/\/www.daliane.com\/ru_he_zai_linux_shang_da_jian_node_js_kai_fa_huan_jing\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb AngularJS\u5b66\u4e60\u7b14\u8bb0\u4e4b\u5168\u6587\u68c0\u7d22\",\"href\":\"http:\/\/www.daliane.com\/angularjs_xue_xi_bi_ji_zhi_quan_wen_jian_suo\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb \u4e1c\u5317\u4eba\u5c31\u662f\u725b\",\"href\":\"http:\/\/www.daliane.com\/dong_bei_ren_jiu_shi_niu\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb \u9047\u5230\u5371\u9669\u5148\u9003\u8dd1\u7684\u672a\u5fc5\u4e0d\u662f\u82f1\u96c4\",\"href\":\"http:\/\/www.daliane.com\/yu_dao_wei_xian_xian_tao_pao_de_wei_bi_bu_shi_ying_xiong\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb \u539f\u8c05\u90a3\u4e2a\u80cc\u540e\u5f00\u67aa\u7684\u4eba\",\"href\":\"http:\/\/www.daliane.com\/yuan_liang_na_ge_bei_hou_kai_qiang_de_ren\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb AngularJS \u5b66\u4e60\u7b14\u8bb0\u4e4b\u7b2c\u4e00\u5f20AngularJS \u6a21\u677f\",\"href\":\"http:\/\/www.daliane.com\/angularjs_xue_xi_bi_ji_zhi_di_yi_zhang_angularjs_mo_ban\/\"},{\"title\":\"\u8be6\u7ec6\u9605\u8bfb AngularJS \u5b66\u4e60\u7b14\u8bb0\u4e4b\u73af\u5883\u642d\u5efa\",\"href\":\"http:\/\/www.daliane.com\/angularjs_xue_xi_bi_ji_zhi_huan_jing_da_jian\/\"}]<\/pre>\n<\/blockquote>\n
    \"4\"<\/a><\/p>\n
    \u8bb0\u5f97\u597d\u597d\u770b\u770b superagent \u7684 API\uff0c\u5b83\u628a\u94fe\u5f0f\u8c03\u7528\u7684\u98ce\u683c\u73a9\u5230\u4e86\u6781\u81f4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Node.js \u603b\u662f\u5439\u725b\u903c\u8bf4\u81ea\u5df1\u5f02\u6b65\u7279\u6027\u591a\u4e48\u591a\u4e48\u5389\u5bb3\uff0c\u4f46\u662f\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u8981\u627e\u4e00\u4e2a\u80fd\u597d\u597d\u5229\u7528\u5f02\u6b65\u7684\u573a\u666f\u4e0d\u5bb9\u6613\u3002…<\/p>\n","protected":false},"author":2,"featured_media":821,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[38,60],"tags":[233,66],"_links":{"self":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/817"}],"collection":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/comments?post=817"}],"version-history":[{"count":5,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/817\/revisions"}],"predecessor-version":[{"id":823,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/817\/revisions\/823"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/media\/821"}],"wp:attachment":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/media?parent=817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/categories?post=817"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/tags?post=817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}