{"id":29824,"date":"2023-07-11T00:08:13","date_gmt":"2023-01-29T16:30:01","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e5%b0%86express%e7%9a%84%e8%ae%bf%e9%97%ae%e6%97%a5%e5%bf%97%e8%be%93%e5%87%ba%e5%88%b0mongolab%e4%b8%ad%e3%80%82-2\/"},"modified":"2025-08-12T16:05:44","modified_gmt":"2025-08-12T08:05:44","slug":"%e5%b0%9d%e8%af%95%e5%b0%86express%e7%9a%84%e8%ae%bf%e9%97%ae%e6%97%a5%e5%bf%97%e8%be%93%e5%87%ba%e5%88%b0mongolab%e4%b8%ad%e3%80%82-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e5%b0%86express%e7%9a%84%e8%ae%bf%e9%97%ae%e6%97%a5%e5%bf%97%e8%be%93%e5%87%ba%e5%88%b0mongolab%e4%b8%ad%e3%80%82-2\/","title":{"rendered":"\u5c1d\u8bd5\u5c06Express\u7684\u8bbf\u95ee\u65e5\u5fd7\u8f93\u51fa\u5230MongoLab\u4e2d"},"content":{"rendered":"<h1>\u9996\u5148\u5728\u8fd9\u4e2a\u9886\u57df\uff0c\u5982\u679c\u6709\u4e00\u4e9b\u5efa\u8bae\u6216\u6279\u8bc4\uff0c\u8bf7\u968f\u65f6\u63d0\u51fa\u3002<\/p>\n<h2>\u80cc\u666f\u4fe1\u606f\u4e00\u6bb5\u65f6\u95f4\u4ee5\u524d\uff0c\u6211\u628a\u81ea\u5df1\u7684\u7f51\u7ad9\u653e\u5728\u4e0e\u670b\u53cb\u4e00\u8d77\u5171\u4eab\u7684\u79df\u7528\u670d\u52a1\u5668\u4e0a\u3002\u4f46\u5728\u8fc1\u79fb\u6240\u4f7f\u7528\u7684\u670d\u52a1\u5668\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u51b3\u5b9a\u5c06\u51e0\u4e4e\u6240\u6709\u7ba1\u7406\u7684\u57df\u540d\u79fb\u52a8\u5230Heroku\u4e0a\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u6211\u5e76\u6ca1\u6709\u7279\u522b\u8003\u8651\u65e5\u5fd7\u4e4b\u7c7b\u7684\u4e8b\u60c5\uff0c\u6240\u4ee5\u9664\u4e86Logplex\uff08\u901a\u8fc7$ heroku logs\u663e\u793a\u7684\u5185\u5bb9\uff09\u4e4b\u5916\uff0c\u6ca1\u6709\u5176\u4ed6\u65e5\u5fd7\u4e86\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u53ea\u6709\u6700\u65b0\u76841500\u884c\u3002\u867d\u7136\u5e76\u6ca1\u6709\u592a\u591a\u8bbf\u95ee\u91cf\uff0c\u4f46\u6ca1\u6709\u65e5\u5fd7\u4e5f\u611f\u89c9\u5f88\u5b64\u5355\uff0c\u6240\u4ee5\u6211\u51b3\u5b9a\u60f3\u529e\u6cd5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<h2>\u6700\u8fd1\u7684\u6f6e\u6d41\u4f7f\u7528Logstash\u6216Fluentd\u4f5c\u4e3a\u4e2d\u95f4\u4ef6\uff0c\u6700\u540e\u5c06\u6570\u636e\u6d41\u5f0f\u4f20\u8f93\u5230\u7528\u6237\u559c\u6b22\u7684\u6570\u636e\u5e93\u4e2d\uff0c\u5e76\u6839\u636e\u9700\u8981\u8fdb\u884c\u76d1\u63a7\u548c\u5206\u6790\u3002\u4e00\u4e9b\u597d\u7528\u7684\u5206\u6790\u5de5\u5177\u901a\u5e38\u4e0e\u540e\u7aef\u548c\u5bc6\u5207\u5408\u4f5c\uff0c\u5e76\u5f15\u5bfc\u7528\u6237\u4ed8\u8d39\u3002\u8fd8\u6709\u4e00\u4e9b\u4f8b\u5b50\uff0c\u5c06\u540e\u7aef\u8fdb\u4e00\u6b65\u5206\u4e3aMongoDB\u548cElasticSearch\u4e24\u4e2a\u9636\u6bb5\uff0c\u5206\u522b\u5904\u7406\u5404\u81ea\u64c5\u957f\u7684\u4efb\u52a1\u3002<\/p>\n<p>\u55ef\uff0c\u56e0\u70ba\u9019\u53ea\u662f\u500b\u8208\u8da3\u7db2\u7ad9\uff0c\u6240\u4ee5\u65e5\u8a8c\u7684\u91cf\u4e26\u4e0d\u592a\u591a\uff0c\u4e0d\u81f3\u65bc\u82b1\u9322\u53bb\u4f7f\u7528TD\u6216BigQuery\u7b49\u670d\u52d9\uff0c\u66f4\u4e0d\u7528\u8aaa\u79df\u501f\u865b\u64ec\u6a5f\u5668\u4f86\u4e00\u76f4\u904b\u884cFluentd\u6216ElasticSearch\u4e86\uff0c\u9019\u7a2e\u7a0b\u5ea6\u7684\u8209\u63aa\u90fd\u6709\u4e9b\u7336\u8c6b\u3002\u5176\u5be6\u6211\u672c\u4f86\u4e5f\u60f3\u8a66\u8a66Kibana\u4e4b\u985e\u7684\uff0c\u4f46\u679c\u7136\u9084\u662f\u7121\u6cd5\u5be6\u73fe\u5427\u3002<\/p>\n<p>\u6709\u8da3\u7684\u7f51\u7ad9\u751a\u81f3\u8fde\u524d\u7aef\u670d\u52a1\u5668\u90fd\u6ca1\u6709\u7edf\u4e00\uff0c\u4f7f\u7528\u7684\u662fExpress\/Node.js\u3001Sinatra\/Ruby\u3001http\/go\u7b49\u7b49\u4e0d\u540c\u7684\u6280\u672f\u6765\u642d\u5efa\u7f51\u7ad9\uff0c\u6839\u636e\u5efa\u7ad9\u65f6\u95f4\u8fdb\u884c\u8bd5\u9a8c\uff0c\u6240\u4ee5\u52a0\u5165\u50cfFluentd\u8fd9\u6837\u7684\u4e2d\u95f4\u4ef6\u662f\u5f88\u6709\u5438\u5f15\u529b\u7684\u3002\u4f46\u662f\u5728\u514d\u8d39\u9636\u6bb5\u8fd0\u8425\u65f6\uff0c\u7531\u4e8e\u670d\u52a1\u7684\u539f\u56e0\uff0c\u540e\u7aef\u53ef\u80fd\u4e0d\u5f97\u4e0d\u66f4\u6362\u3002<\/p>\n<h1>\u66ab\u6642\u4f7f\u7528MongoDB<\/p>\n<h2>\u6700\u7d42\u7d50\u5c40\u5168\u90fd\u653e\u68c4\u6240\u4ee5\uff0c\u5404\u79cd\u68a6\u60f3\u90fd\u81a8\u80c0\u8d77\u6765\uff0c\u7136\u540e\u5168\u90e8\u91cd\u7f6e\u4e86\u3002\u55ef\uff0c\u5728Heroku\u4e0a\u4ee5\u514d\u8d39\u6a21\u5f0f\u73a9\u7684\u8bdd\uff0c\u628a\u5b83\u8fde\u63a5\u5230MongoDB\u53ef\u80fd\u662f\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002\u867d\u7136\u6ca1\u6709\u8003\u8651\u5f97\u592a\u8fdc\u3002<\/p>\n<p>\u7531\u4e8e\u6ca1\u6709\u8db3\u591f\u7684\u4f59\u5730\u6765\u653e\u7f6e\u50cfFluentd\u8fd9\u6837\u7684\u4e2d\u95f4\u5c42\uff0c\u6240\u4ee5\u81f3\u5c11\u6211\u4f1a\u8003\u8651\u5c06\u53ef\u7075\u6d3b\u5e94\u7528\u7684MongoDB\u653e\u5728\u4e2d\u95f4\u5c42\u3002\u800c\u4e14\uff0c\u5982\u679c\u5728Heroku\u652f\u6301\u7684Data Store Add-ons\u4e2d\u6709\u514d\u8d39\u5957\u9910\uff0c\u90a3\u4e48\u9009\u62e9\u4f59\u5730\u5c31\u4e0d\u592a\u591a\u4e86\u3002\u5982\u679c\u4f7f\u7528MongoDB\uff0c\u53ef\u4ee5\u4f7f\u7528MongoLab\uff0c\u5b83\u5141\u8bb8\u514d\u8d39\u4f7f\u7528\u9ad8\u8fbe496MB\u7684\u5957\u9910\uff0c\u800c\u4e14\u5982\u679c\u4f7f\u7528MongoDB\u7684Capped Collection\uff0c\u8bbe\u5b9a\u6700\u5927\u5927\u5c0f\u540e\uff0c\u5b83\u4f1a\u81ea\u52a8\u5220\u9664\u65e7\u6570\u636e\u4ee5\u9632\u6ea2\u51fa\uff0c\u56e0\u6b64\u7ef4\u62a4\u8d77\u6765\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<h2>\u6dfb\u52a0MongoLab<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">toyoshim@tss:~\/workspace\/Heroku (master) $<\/span> heroku addons:add mongolab:sandbox\r\n<span class=\"go\">Adding mongolab:sandbox on chime... done, v11 (free)\r\nWelcome to MongoLab.  Your new subscription is being created and will be available shortly.  Please consult the MongoLab Add-on Admin UI to check on its progress.\r\nUse `heroku addons:docs mongolab` to view documentation.\r\n<\/span><\/code><\/pre>\n<p>\u5f53\u5728Heroku\u7684\u4eea\u8868\u76d8\u4e0a\u8fdb\u5165\u9879\u76ee\u7684\u8d44\u6e90\u9009\u9879\u5361\u65f6\uff0c\u4f1a\u53d1\u73b0MongoLab\u5df2\u6dfb\u52a0\u3002\u5982\u679c\u672c\u5730\u7684mongo shell\u662f2.x\u7248\u672c\uff0c\u5219\u65e0\u6cd5\u901a\u8fc7mongo shell\u767b\u5f55\uff0c\u56e0\u6b64\u9700\u8981\u4ee5\u67d0\u79cd\u65b9\u5f0f\u51c6\u59073.0\u7248\u672c\u7684mongo shell\uff08\u53c2\u8003\uff1a\u89e3\u51b3\u65e0\u6cd5\u901a\u8fc7mongo shell\u767b\u5f55MongoLab\u7684\u65b9\u6cd5\uff09\u3002<\/p>\n<p>\u6216\u8005\uff0c\u901a\u8fc7 Web \u7528\u6237\u754c\u9762\u5b8c\u6210\u6240\u6709\u64cd\u4f5c\u4e5f\u662f\u4e00\u4e2a\u9009\u62e9\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4f1a\u7559\u4e0b\u547d\u4ee4\u884c\u5907\u5fd8\u5f55\u3002\u867d\u7136\u5927\u5c0f\u4e3a496MB\uff0c\u4f46\u6211\u53ea\u521b\u5efa\u4e86\u5927\u7ea6200MB\u4f5c\u4e3a\u5728\u4e2d\u9014\u60f3\u8981\u505a\u4e9b\u5176\u4ed6\u4e8b\u60c5\u65f6\u7684\u5907\u7528\u3002\u5f71\u54cd\u5e94\u8be5\u4e0d\u4f1a\u592a\u5927\uff0c\u5f53\u4fdd\u5b58\u671f\u9650\u51cf\u5c11\u4e00\u534a\u5de6\u53f3\u65f6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">root@d2760283f209:\/#<\/span> mongo <span class=\"k\">********<\/span>.mongolab.com:<span class=\"k\">*****<\/span>\/heroku_<span class=\"k\">********<\/span> <span class=\"nt\">-u<\/span> &lt;dbuser&gt; <span class=\"nt\">-p<\/span> &lt;dbpassword&gt;\r\n<span class=\"go\">MongoDB shell version: 3.0.8\r\nconnecting to: ********.mongolab.com:*****\/heroku_********\r\nWelcome to the MongoDB shell.\r\nFor interactive help, type \"help\".\r\nFor more comprehensive documentation, see\r\n    http:\/\/docs.mongodb.org\/\r\nQuestions? Try the support group\r\n    http:\/\/groups.google.com\/group\/mongodb-user\r\n<\/span><span class=\"gp\">rs-********:PRIMARY&gt;<\/span> db.createCollection<span class=\"o\">(<\/span><span class=\"s2\">\"log\"<\/span>, <span class=\"o\">{<\/span> capped: <span class=\"nb\">true<\/span>, size: 200000000 <span class=\"o\">})<\/span>\r\n<span class=\"go\">{ \"ok\" : 1 }\r\n}\r\n<\/span><\/code><\/pre>\n<h1>\u5c06Express\u96c6\u6210\u5230\u7a0b\u5e8f\u4e2d<\/p>\n<h2>\u5c06\u5176\u8f6c\u6362\u6210JSON\u683c\u5f0fmorgan\u3092\u4f7f\u3063\u3066\u3044\u305f\u306e\u3067\u3001\u3053\u3044\u3064\u3092\u62e1\u5f35\u3057\u3066MongoDB\u306b\u5410\u304d\u51fa\u3059\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002\u4eca\u304b\u3089\u601d\u3048\u30701\u304b\u3089\u66f8\u3044\u305f\u307b\u3046\u304c\u826f\u304b\u3063\u305f\u6c17\u3082\u3057\u307e\u3059\u304c\u3002<\/p>\n<p>Morgan\u5728\u81ea\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f\u65b9\u9762\u6709\u4e24\u79cd\u65b9\u6cd5\u3002\u7b2c\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u81ea\u5b9a\u4e49\u4ee4\u724c\u683c\u5f0f\u7684\u65b9\u6cd5\uff0c\u5982\u4ecb\u7ecd\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">use<\/span><span class=\"p\">(<\/span><span class=\"nx\">morgan<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">{\"method\": \":method\"}<\/span><span class=\"dl\">'<\/span><span class=\"p\">));<\/span>\r\n<\/code><\/pre>\n<p>\u53ea\u9700\u5c06\u683c\u5f0f\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u5b83<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span><span class=\"nl\">\"method\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"GET\"<\/span><span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4f1a\u88ab\u6574\u5f62\u6210\u8fd9\u79cd\u6837\u5b50\u3002<\/p>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528morgan.format()\u7684\u65b9\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">morgan<\/span><span class=\"p\">.<\/span><span class=\"nx\">format<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">json<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">{\"method\": \":method\"}<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">use<\/span><span class=\"p\">(<\/span><span class=\"nx\">morgan<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">json<\/span><span class=\"dl\">'<\/span><span class=\"p\">));<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u4e8b\u524d\u306b\u4efb\u610f\u306e\u540d\u524d\uff08\u3053\u3053\u3067\u306fjson\uff09\u3067\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u767b\u9332\u3057\u3066\u3001\u5f8c\u304b\u3089\u540d\u524d\u3067\u6307\u5b9a\u3057\u3066\u3042\u3052\u307e\u3059\u3002\u3069\u3061\u3089\u3067\u3082\u7d50\u679c\u306f\u540c\u3058\u306a\u306e\u3067\u304a\u597d\u307f\u3067\u3002<\/p>\n<p>\u307e\u305f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3082\u66f8\u5f0f\u3067\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u4ee5\u5916\u306b\u95a2\u6570\u3092\u6e21\u3059\u65b9\u6cd5\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u3002\u5b9f\u969b\u3001\u66f8\u5f0f\u3067\u6307\u5b9a\u3057\u305f\u5834\u5408\u306b\u306f\u5185\u90e8\u7684\u306bcompile()\u304c\u8d70\u308a\u3001\u751f\u6210\u3055\u308c\u305f\u95a2\u6570\u304c\u30d5\u30a9\u30fc\u30de\u30c3\u30bf\u3068\u3057\u3066\u767b\u9332\u3055\u308c\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<h2>MongoDB\u3078\u306e\u51fa\u529b<\/p>\n<pre class=\"post-pre\"><code><span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">use<\/span><span class=\"p\">(<\/span><span class=\"nx\">morgan<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">json<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"p\">{<\/span><span class=\"na\">stream<\/span><span class=\"p\">:<\/span> <span class=\"nx\">dbstream<\/span><span class=\"p\">}));<\/span>\r\n<\/code><\/pre>\n<p>\u307f\u305f\u3044\u306a\u5f62\u3067stream.Writable\u3092\u7d99\u627f\u3057\u305finstance\u3092\u6e21\u3057\u3066\u3042\u3052\u308b\u3068\u3001\u5404\u30ed\u30b0\u306e\u51fa\u529b\u304c1\u56de\u306ewrite\u3067\u6e21\u3063\u3066\u304f\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u304b\u7701\u3044\u3066\u3056\u3063\u304f\u308a\u66f8\u304f\u3068\u3001<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"kd\">function<\/span> <span class=\"nx\">MongoDBStream<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">stream<\/span><span class=\"p\">.<\/span><span class=\"nx\">Writable<\/span><span class=\"p\">.<\/span><span class=\"nx\">call<\/span><span class=\"p\">(<\/span><span class=\"k\">this<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">_db<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">_collection<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">morgan<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">morgan<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">json<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"p\">{<\/span><span class=\"na\">stream<\/span><span class=\"p\">:<\/span> <span class=\"k\">this<\/span><span class=\"p\">});<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"nx\">util<\/span><span class=\"p\">.<\/span><span class=\"nx\">inherits<\/span><span class=\"p\">(<\/span><span class=\"nx\">MongoDBStream<\/span><span class=\"p\">,<\/span> <span class=\"nx\">stream<\/span><span class=\"p\">.<\/span><span class=\"nx\">Writable<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nx\">MongoDBStream<\/span><span class=\"p\">.<\/span><span class=\"nx\">prototype<\/span><span class=\"p\">.<\/span><span class=\"nx\">_write<\/span> <span class=\"o\">=<\/span> <span class=\"kd\">function<\/span><span class=\"p\">(<\/span><span class=\"nx\">chunk<\/span><span class=\"p\">,<\/span> <span class=\"nx\">encoding<\/span><span class=\"p\">,<\/span> <span class=\"nx\">cb<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">_collection<\/span><span class=\"p\">.<\/span><span class=\"nx\">insertOne<\/span><span class=\"p\">(<\/span><span class=\"nx\">JSON<\/span><span class=\"p\">.<\/span><span class=\"nx\">parse<\/span><span class=\"p\">(<\/span><span class=\"nx\">chunk<\/span><span class=\"p\">)).<\/span><span class=\"nx\">then<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">cb<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">},<\/span> <span class=\"p\">(<\/span><span class=\"nx\">e<\/span><span class=\"p\">,<\/span> <span class=\"nx\">db<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">cb<\/span><span class=\"p\">(<\/span><span class=\"nx\">e<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"p\">});<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"nx\">MongoDBStream<\/span><span class=\"p\">.<\/span><span class=\"nx\">prototype<\/span><span class=\"p\">.<\/span><span class=\"nx\">connect<\/span> <span class=\"o\">=<\/span> <span class=\"kd\">function<\/span><span class=\"p\">(<\/span><span class=\"nx\">url<\/span><span class=\"p\">,<\/span> <span class=\"nx\">collection<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"k\">new<\/span> <span class=\"nb\">Promise<\/span><span class=\"p\">((<\/span><span class=\"nx\">resolve<\/span><span class=\"p\">,<\/span> <span class=\"nx\">reject<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">mongodb<\/span><span class=\"p\">.<\/span><span class=\"nx\">MongoClient<\/span><span class=\"p\">.<\/span><span class=\"nx\">connect<\/span><span class=\"p\">(<\/span><span class=\"nx\">url<\/span><span class=\"p\">,<\/span> <span class=\"p\">(<\/span><span class=\"nx\">err<\/span><span class=\"p\">,<\/span> <span class=\"nx\">db<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nx\">err<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nx\">reject<\/span><span class=\"p\">(<\/span><span class=\"nx\">err<\/span><span class=\"p\">);<\/span>\r\n      <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">_db<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">db<\/span><span class=\"p\">;<\/span>\r\n      <span class=\"k\">this<\/span><span class=\"p\">.<\/span><span class=\"nx\">_collection<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">db<\/span><span class=\"p\">.<\/span><span class=\"nx\">collection<\/span><span class=\"p\">(<\/span><span class=\"nx\">collection<\/span><span class=\"p\">);<\/span>\r\n      <span class=\"nx\">resolve<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"p\">});<\/span>\r\n  <span class=\"p\">});<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"kd\">var<\/span> <span class=\"nx\">dbstream<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">MongoDBStream<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nx\">dbstream<\/span><span class=\"p\">.<\/span><span class=\"nx\">connect<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">mongodb:\/\/....<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">log<\/span><span class=\"dl\">'<\/span><span class=\"p\">).<\/span><span class=\"nx\">then<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">use<\/span><span class=\"p\">(<\/span><span class=\"nx\">dbstream<\/span><span class=\"p\">.<\/span><span class=\"nx\">morgan<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"c1\">\/\/ ...<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u52d5\u304d\u307e\u3059\u3002_write\u306e\u4e2d\u3067JSON.parse()\u3057\u3066\u308b\u306e\u304c\u30a4\u30de\u30a4\u30c1\u3002\u30d5\u30a9\u30fc\u30de\u30c3\u30bf\u3092\u95a2\u6570\u3067\u6e21\u3057\u3066\u3001\u30d5\u30a9\u30fc\u30de\u30c3\u30bf\u304c\u547c\u3070\u308c\u305f\u6bb5\u968e\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u69cb\u7bc9\u3057\u3066DB\u306b\u30b9\u30c8\u30a2\u3057\u3061\u3083\u3046\u306e\u3082\u624b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u307e\u3041\u3001\u6027\u80fd\u6c17\u306b\u3057\u306a\u3044\u7528\u9014\u306a\u306e\u3067\u3002\u30e6\u30eb\u30d5\u30ef\u611f\u3092\u5927\u5207\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<h1>npm\u30e2\u30b8\u30e5\u30fc\u30eb\u5316<br \/>\n\u305b\u3063\u304b\u304f\u306a\u306e\u3067\u3001\u3068\u3044\u3046\u304b\u81ea\u5206\u81ea\u8eab\u304c\u305f\u304f\u3055\u3093\u30b5\u30fc\u30d0\u304c\u3042\u308b\u95a2\u4fc2\u3067npm\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u3057\u3061\u3083\u3044\u307e\u3057\u305f\u3002momolog\u3063\u3066\u540d\u524d\u3067\u767b\u9332\u3057\u3066\u3042\u308a\u307e\u3059\u3002morgan\u4f7f\u3063\u305fMongoDB\u5411\u3051\u306e\u30ed\u30ac\u30fc\u3060\u304b\u3089momolog\u3002Promise\u3068\u304bES6\u306e()=&gt;{}\u69cb\u6587\u3092\u4f7f\u3063\u3066\u308b\u306e\u3067\u3001node\u306f0.*\u7cfb\u306f\u5168\u6ec5\u3067\u3059\u3002\u81ea\u5206\u306f4.2.1\u3067\u4f5c\u696d\u3057\u3066\u307e\u3057\u305f\u3002\u3053\u308c\u4f7f\u3048\u3070\u6570\u884c\u306e\u4fee\u6b63\u3067MongoDB\u306b\u30ed\u30b0\u304c\u5410\u304d\u51fa\u305b\u307e\u3059\u3002<\/p>\n<h1>\u5728Heroku\u4e0a\u7684\u5b9e\u9645\u64cd\u4f5c<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d041437434c4406bd56ea\/37-0.png\" alt=\"heroku.png\" \/>\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u304b\u3089MongoLab\u3092\u8ffd\u52a0\u3002\u691c\u7d22\u30dc\u30c3\u30af\u30b9\u3067Mongo\u3068\u304b\u5165\u308c\u308c\u30702\u3064\u304f\u3089\u3044\u306b\u307e\u3067\u7d5e\u308c\u307e\u3059\u306e\u3067\u3001\u3042\u3068\u306f\u30dd\u30c1\u30c3\u3068\u3002\u3067\u3001\u3053\u3053\u306b\u3067\u304d\u305fMongoLab\u306e\u30a2\u30a4\u30b3\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u304c\u958b\u304d\u307e\u3059\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d041437434c4406bd56ea\/39-0.png\" alt=\"mongolab.png\" \/>\u8272\u3005\u3068\u898b\u3048\u3061\u3083\u3063\u3066\u307e\u3059\u304c\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u898b\u3048\u3066\u306a\u3044\u306e\u3067\u826f\u3057\u3068\u3057\u307e\u3057\u3087\u3046\u3002Add collection\u304b\u3089\u4f5c\u308b\u5834\u5408\u306b\u306fCapped\u306b\u30c1\u30a7\u30c3\u30af\u3092\u5165\u308c\u307e\u3059\u3002MongoDB\u306a\u306e\u3067\u4e8b\u524d\u306bCollection\u3092\u4f5c\u3089\u306a\u304f\u3066\u3082\u6700\u521d\u306e\u30ed\u30b0\u66f8\u304d\u8fbc\u307f\u6642\u306b\u81ea\u52d5\u751f\u6210\u3055\u308c\u308b\u306e\u3067\u3059\u304c\u3001\u305d\u306e\u5834\u5408\u306b\u306fCapped\u306b\u306f\u306a\u3089\u306a\u3044\u306e\u3067\u4e8b\u524d\u306b\u4f5c\u3063\u305f\u307b\u3046\u304c\u826f\u3044\u3067\u3059\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u5927\u81f4\u4e0a\u6dfb\u52a0\u4ee5\u4e0b\u4fee\u6539\u3002\u63a8\u8350\u4f7f\u7528express 4.x\u7248\u672c\u548cnode 4.x\u7248\u672c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{<\/span>\r\n  <span class=\"err\">...<\/span>\r\n  <span class=\"nl\">\"dependencies\"<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"err\">...<\/span>\r\n    <span class=\"nl\">\"momolog\"<\/span><span class=\"p\">:<\/span> <span class=\"s2\">\"0.1.0\"<\/span>\r\n  <span class=\"p\">},<\/span>\r\n  <span class=\"err\">...<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kd\">var<\/span> <span class=\"nx\">express<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">express<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n<span class=\"kd\">var<\/span> <span class=\"nx\">momolog<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">momolog<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"kd\">var<\/span> <span class=\"nx\">app<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">express<\/span><span class=\"p\">();<\/span>\r\n<span class=\"kd\">var<\/span> <span class=\"nx\">log<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">momolog<\/span><span class=\"p\">();<\/span>\r\n<span class=\"c1\">\/\/ \u74b0\u5883\u5909\u6570\u306b\u30e6\u30fc\u30b6\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u8fbc\u307f\u306eURI\u304c\u81ea\u52d5\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u306e\u3067<\/span>\r\n<span class=\"c1\">\/\/ \u305d\u308c\u3092\u305d\u306e\u307e\u307e\u6e21\u3059\u3060\u3051\u3002\u7b2c2\u5f15\u6570\u306f\u5148\u307b\u3069\u4f5c\u3063\u305fCollection\u540d\u3002<\/span>\r\n<span class=\"nx\">log<\/span><span class=\"p\">.<\/span><span class=\"nx\">connect<\/span><span class=\"p\">(<\/span><span class=\"nx\">process<\/span><span class=\"p\">.<\/span><span class=\"nx\">env<\/span><span class=\"p\">.<\/span><span class=\"nx\">MONGOLAB_URI<\/span><span class=\"p\">,<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">log<\/span><span class=\"dl\">'<\/span><span class=\"p\">).<\/span><span class=\"nx\">then<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"c1\">\/\/ \u4ee5\u4e0b\u306euse()\u306fconnect\u524d\u3067\u3082\u5927\u4e08\u592b\u3002\u65e9\u3044\u307b\u3046\u304c\u5b89\u5fc3\u3002<\/span>\r\n  <span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">use<\/span><span class=\"p\">(<\/span><span class=\"nx\">log<\/span><span class=\"p\">.<\/span><span class=\"nx\">morgan<\/span><span class=\"p\">());<\/span>\r\n\r\n  <span class=\"c1\">\/\/ \u4ed6\u306e\u8a2d\u5b9a\u306f\u3053\u3053\u3088\u308a\u5f8c\u3067\u3002<\/span>\r\n  <span class=\"c1\">\/\/ morgan\u767b\u9332\u524d\u306b\u30cf\u30f3\u30c9\u30e9\u3092\u767b\u9332\u3059\u308b\u3068\u30ed\u30b0\u5bfe\u8c61\u304b\u3089\u5916\u308c\u307e\u3059\u3002<\/span>\r\n\r\n  <span class=\"nx\">app<\/span><span class=\"p\">.<\/span><span class=\"nx\">listen<\/span><span class=\"p\">(<\/span><span class=\"nx\">process<\/span><span class=\"p\">.<\/span><span class=\"nx\">env<\/span><span class=\"p\">.<\/span><span class=\"nx\">PORT<\/span><span class=\"p\">,<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ Started.<\/span>\r\n  <span class=\"p\">});<\/span>\r\n<span class=\"p\">});<\/span>\r\n<\/code><\/pre>\n<p>\u54ce\u5440\uff0c\u771f\u7b80\u5355\u3002<\/p>\n<h1>\u603b\u7ed3\u6240\u4ee5\uff0c\u6211\u5df2\u7ecf\u5236\u4f5c\u4e86\u5927\u7ea6\u4e94\u4e07\u4e2a\u5de5\u5177\uff0c\u5e76\u4e14\u5c3d\u529b\u53bb\u5bfb\u627e\u4e86\u5408\u9002\u7684\u5de5\u5177\uff08\u867d\u8bf4\u5df2\u7ecf\u627e\u5230\u4e0d\u5c11\u4e86\uff09\u3002\u4eca\u540e\uff0c\u6211\u8fd8\u60f3\u4e3aRuby\u548cGo\u7f16\u5199\u76f8\u540c\u7684\u8f93\u51fa\u5de5\u5177\uff0c\u5e76\u5728\u65e5\u5fd7\u6536\u96c6\u540e\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u5206\u6790\u9875\u9762\uff0c\u6216\u8005\u5229\u7528\u73b0\u6709\u7684\u5de5\u5177\u3002\u5b50\u7d22\u5f15\u7b49\u95ee\u9898\u4ee5\u540e\u518d\u8003\u8651\u3002\u5982\u679c\u683c\u5f0f\u4e0d\u5408\u9002\uff0c\u7a0d\u540e\u518d\u8fdb\u884c\u8f6c\u6362\uff08\u4e3a\u6b64\u6211\u51c6\u5907\u4e86200MB\u7684\u7a7a\u95f4\uff01\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148\u5728\u8fd9\u4e2a\u9886\u57df\uff0c\u5982\u679c\u6709\u4e00\u4e9b\u5efa\u8bae\u6216\u6279\u8bc4\uff0c\u8bf7\u968f\u65f6\u63d0\u51fa\u3002 \u80cc\u666f\u4fe1\u606f\u4e00\u6bb5\u65f6\u95f4\u4ee5\u524d\uff0c\u6211\u628a\u81ea\u5df1\u7684\u7f51\u7ad9\u653e\u5728\u4e0e\u670b\u53cb\u4e00\u8d77\u5171\u4eab\u7684\u79df [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29824","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"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>\u5c1d\u8bd5\u5c06Express\u7684\u8bbf\u95ee\u65e5\u5fd7\u8f93\u51fa\u5230MongoLab\u4e2d - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u5c1d\u8bd5\u5c06Express\u7684\u8bbf\u95ee\u65e5\u5fd7\u8f93\u51fa\u5230MongoLab\u4e2d\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" 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