{"id":31950,"date":"2023-09-17T19:35:25","date_gmt":"2022-12-11T13:25:36","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8cheerio%e5%ba%93%e5%92%8cnode-js%e8%bf%9b%e8%a1%8c%e6%95%b0%e6%8d%ae%e7%88%ac%e5%8f%96%e3%80%82\/"},"modified":"2024-05-04T00:13:17","modified_gmt":"2024-05-03T16:13:17","slug":"%e4%bd%bf%e7%94%a8cheerio%e5%ba%93%e5%92%8cnode-js%e8%bf%9b%e8%a1%8c%e6%95%b0%e6%8d%ae%e7%88%ac%e5%8f%96%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8cheerio%e5%ba%93%e5%92%8cnode-js%e8%bf%9b%e8%a1%8c%e6%95%b0%e6%8d%ae%e7%88%ac%e5%8f%96%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Cheerio\u5e93\u548cNode.js\u8fdb\u884c\u6570\u636e\u722c\u53d6"},"content":{"rendered":"<h3>\u8bf7\u95ee&#8221;\u30c1\u30a7\u30ea\u30aa&#8221; \u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n<p>\u9019\u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684JavaScript\u5eab\uff0c\u5c08\u70ba\u6578\u64da\u722c\u53d6\u800c\u8a2d\u8a08\u3002\u8a72\u5eab\u63d0\u4f9b\u4e86\u985e\u4f3c\u65bcjQuery Selector\u7684Cheerio Selector\uff0c\u6240\u4ee5\u5728\u4f7f\u7528\u51fd\u6578\u6642\u8207\u4f7f\u7528jQuery Selector\u975e\u5e38\u76f8\u4f3c\u3002\u7c21\u55ae\u4f86\u8aaa\uff0c\u5c31\u50cf\u5728\u4f7f\u7528jQuery\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528html()\u51fd\u6578\u4f86\u7372\u53d6HTML\u4ee3\u78bc\uff0c\u4f7f\u7528attr(name, value)\u4f86\u7372\u53d6\u5143\u7d20\u5c6c\u6027\u7b49\u7b49\uff0c\u9019\u4e9b\u8207jQuery\u5eab\u4e2d\u719f\u6089\u7684\u51fd\u6578\u76f8\u540c\u3002\u6709\u95dc\u8a72\u5eab\u7684\u5de5\u4f5c\u539f\u7406\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u8acb\u53c3\u8003\u9019\u88e1\u3002<\/p>\n<h3>\u7f16\u5199\u4e00\u4e2a\u6f14\u793a\u5e94\u7528\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u81ea\u52a8\u901a\u77e5\u7528\u6237\u6709\u65b0\u7684\u6545\u4e8b\u7ae0\u8282\u65f6\u3002<\/h3>\n<p>\u6211\u4eec\u7684\u6b65\u9aa4\u5982\u4e0b: de \ud83d\ude42<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b9\u30c6\u30c3\u30d71\uff1a\u7269\u8a9e\u306e\u6700\u65b0\u7ae0\u306e\u30ea\u30b9\u30c8\u3092\u53d6\u5f97\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b9\u30c6\u30c3\u30d72\uff1a\u65b0\u305f\u306a\u7ae0\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u77e5\u308b\u305f\u3081\u306b\u3001JSON\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u7ae0\u3068\u3053\u306e\u7ae0\u3092\u6bd4\u8f03\u3057\u3066\u65b0\u305f\u306a\u7ae0\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u77e5\u308b\u3002\u305d\u306eJSON\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u306a\u3044\u5834\u5408\u306f\u3001\u4f5c\u6210\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30b9\u30c6\u30c3\u30d73\uff1a\u65b0\u3057\u3044\u7ae0\u304c\u3042\u308b\u5834\u5408\u306f\u30b9\u30c8\u30fc\u30ea\u30fc\u3092\u53d6\u5f97\u3057\u3066\u3001\u30e1\u30fc\u30eb\u3067\u901a\u77e5\u3092\u9001\u308b\u3002<\/ul>\n<p>\u597d\u5427\uff0c\u6211\u4eec\u5f00\u59cb\u5427\u3002<br \/>\n\u8bf7\u5b89\u88c5cheerio\u548crequest\u8fd9\u4e24\u4e2a\u5e93\u3002\uff08\u7528\u4e8e\u6293\u53d6\u60f3\u8981\u7684\u7f51\u7ad9\u6570\u636e\uff09<br \/>\nnpm install cheerio &#8211;save<br \/>\nnpm install request &#8211;save<br \/>\nnpm install nodemailer &#8211;save<\/p>\n<p>\u58f0\u660e\u6240\u9700\u7684\u5e93<\/p>\n<p>const cheerio = require(&#8216;cheerio&#8217;);<br \/>\nconst request = require(&#8216;request&#8217;);<br \/>\nconst fs = require(&#8216;fs&#8217;);<br \/>\nconst nodemailer = require(&#8216;nodemailer&#8217;);<\/p>\n<p>\u4f7f\u7528const\u6765\u5f15\u5165cheerio\u3001request\u3001fs\u548cnodemailer\u5e93\u3002<\/p>\n<p>\u7136\u540e\uff0c\u521b\u5efa\u4e00\u4e2a\u722c\u866b\u51fd\u6570\u6765\u83b7\u53d6\u6545\u4e8b\u9875\u9762\u4e0a\u6700\u65b0\u7684\u7ae0\u8282\uff0c\u5e76\u4e0e\u4e00\u4e2ajson\u6587\u4ef6\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n<pre class=\"post-pre\"><code>\/\/   \u30a6\u30a8\u30d6\u30b5\u30a4\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u95a2\u6570\r\nfunction Crawler()\r\n{\r\n    \/\/\u3000\u30a6\u30a8\u30d6\u30b5\u30a4\u30c8\u3078\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u308b\r\n    request('http:\/\/truyencv.com\/pham-nhan-tu-tien-chi-tien-gioi-thien\/', function (err, res, body) \r\n    {\r\n        \/\/  cheerio.load\u95a2\u6570\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\r\n        var $ = cheerio.load(body);\r\n        \/\/ \u6700\u65b0\u306e\u30b9\u30c8\u30fc\u30ea\u30fc\u306e\u7ae0\u3092\u53d6\u5f97\u3059\u308b\r\n        var newestChap = $('.list-overview .item .item-value a').text();\r\n        var obj = {\r\n            'newestChap' : newestChap\r\n        }\r\n        var json = JSON.stringify(obj);\r\n        \/\/  newchap.json\u30d5\u30a1\u30a4\u30eb\u3092\u3042\u308b\u304b\u3069\u3046\u304b\u30c1\u30a7\u30af\u3059\u308b\r\n        if (!fs.existsSync('newchap.json')) {\r\n            \/\/  \u306a\u3044\u5834\u5408\u306f\u4f5c\u6210\u3059\u308b\r\n            fs.writeFile('newchap.json', json, '', (err)=&gt;{\r\n                if (err) throw err;\r\n                console.log('newchap.json\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\uff01');\r\n            });\r\n            return; \r\n        }\r\n        \/\/ \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4e2d\u306bnewchap.json\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u3080\r\n        fs.readFile('newchap.json', function readFileCallback(err, data)\r\n        {\r\n            if (err)\r\n            {\r\n                console.log('newchap.json\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\uff01');\r\n                return;\r\n            } \r\n            else \r\n            {\r\n                \/\/ JSON\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u6700\u65b0\u306e\u7ae0\u3092\u53d6\u5f97\u3059\u308b\r\n                obj = JSON.parse(data); \r\n                var dbChap = obj.newestChap;\r\n                \/\/  \uff12\u3064\u306e\u7ae0\u3092\u6bd4\u8f03\u3057\u3066\u9055\u3046\u3070\u3042\u3044\u65b0\u7ae0\u304c\u3042\u308b\r\n                if(newestChap !== dbChap)\r\n                {\r\n                    \/\/ newchap.json\u30d5\u30a1\u30a4\u30eb\u306b\u65b0\u7ae0\u3092\u4fdd\u5b58\u3059\u308b\r\n                    fs.writeFile('newchap.json', json, '', (err)=&gt;{\r\n                        if (err) throw err;\r\n                        console.log('\u65b0\u7ae0\u304c\u3042\u308b\uff01');\r\n                        console.log('newchap.json\u30d5\u30a1\u30a4\u30eb\u3092\u7de8\u96c6\u3057\u307e\u3057\u305f\uff01');\r\n                    });\r\n                    \/\/ \u65b0\u7ae0\u306e\u30ea\u30f3\u30af\u3092\u53d6\u5f97\u3059\u308b\r\n                    var detailUrl = $('.list-overview .item .item-value a').attr('href');\r\n                    \/\/  \u65b0\u7ae0\u306e\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b\r\n                    request(detailUrl, (err, res, body)=&gt;{\r\n                        let cheerioDetail = cheerio.load(body);\r\n                        let contentDetail = cheerioDetail('.truyencv-read-content .content').text();\r\n                        \/\/\u3000\u30e1\u30fc\u30eb\u3067\u901a\u4fe1\u3059\u308b\r\n                        sendEmail(newestChap,contentDetail);\r\n\r\n                    });\r\n                }\r\n                else{\r\n                    console.log('\u65b0\u7ae0\u304c\u3042\u308a\u307e\u305b\u3093\uff01');\r\n                }\r\n            }\r\n        });\r\n    })\r\n}\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\uff0c\u4f7f\u7528nodemailer\u5e93\u6dfb\u52a0sendEmail\u51fd\u6570\u8fdb\u884c\u5982\u4e0b\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code>function sendEmail(subject, content)\r\n{\r\n    var transporter = nodemailer.createTransport({\r\n        service : 'gmail',\r\n        auth: {\r\n            user : 'yourmail@gmail.com',\r\n            pass : 'yourpassword'\r\n        }\r\n    });\r\n    var mailOptions= {\r\n        from : 'yourmail@gmail.com',\r\n        to: 'yourmail@gmail.com',\r\n        subject : '\u30b9\u30c8\u30fc\u30ea\u30fc\u306e\u540d\u524d\u306f\u65b0\u7ae0\u304c\u5275\u520a\u3059\u308b' + subject,\r\n        text : content\r\n    }\r\n    transporter.sendMail(mailOptions, function(err, info){\r\n        if(err)\r\n        {\r\n            console.log('\u30e1\u30fc\u30eb\u3067\u30a8\u30fc\u30e9\u304c\u767a\u751f\u3057\u307e\u3057\u305f\uff1a ', err);\r\n        }\r\n        else\r\n        {\r\n            console.log('\u30e1\u30fc\u30eb\u3092\u9001\u308a\u307e\u3057\u305f\uff1a', info.response);\r\n        }\r\n    });\r\n}\r\n<\/code><\/pre>\n<p>\u6700\u540e\uff0c\u5728\u5199\u4e00\u4e2a\u51fd\u6570\u6765\u6bcf3\u79d2\u91cd\u590d\u6267\u884c\u6b64Crawler\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code>var timer = setInterval(function() { \r\n    return Crawler(); \r\n}, 5000);\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728\u547d\u4ee4\u7a97\u53e3\u4e2d\u8fd0\u884cserver.js\uff0c\u5e76\u7b49\u5f85\u90ae\u4ef6\u53d1\u9001\u3002<br \/>\n\u63a5\u4e0b\u6765\uff0c\u6211\u89e3\u91ca\u4e86\u5982\u4f55\u4f7f\u7528cheerio\u548cnodejs\u8fdb\u884c\u722c\u866b\u6f14\u793a\u7684\u7b80\u5355\u6f14\u793a\u3002<br \/>\n\u8c22\u8c22\u4f60\u7684\u9605\u8bfb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bf7\u95ee&#8221;\u30c1\u30a7\u30ea\u30aa&#8221; \u662f\u4ec0\u4e48\u610f\u601d\uff1f \u9019\u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684JavaScript\u5eab\uff0c\u5c08\u70ba\u6578\u64da\u722c\u53d6 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31950","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4f7f\u7528Cheerio\u5e93\u548cNode.js\u8fdb\u884c\u6570\u636e\u722c\u53d6 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528cheerio\u5e93\u548cnode-js\u8fdb\u884c\u6570\u636e\u722c\u53d6\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Cheerio\u5e93\u548cNode.js\u8fdb\u884c\u6570\u636e\u722c\u53d6\" \/>\n<meta property=\"og:description\" content=\"\u8bf7\u95ee&#8221;\u30c1\u30a7\u30ea\u30aa&#8221; \u662f\u4ec0\u4e48\u610f\u601d\uff1f \u9019\u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684JavaScript\u5eab\uff0c\u5c08\u70ba\u6578\u64da\u722c\u53d6 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528cheerio\u5e93\u548cnode-js\u8fdb\u884c\u6570\u636e\u722c\u53d6\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2022-12-11T13:25:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-03T16:13:17+00:00\" \/>\n<meta name=\"author\" content=\"\u97f5, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" 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