{"id":30051,"date":"2023-06-16T17:05:59","date_gmt":"2024-02-08T20:31:25","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8mongodb%e5%9c%a8alibaba-cloud%e4%b8%8a%e5%88%9b%e5%bb%banode-js-rest-api%e7%9a%84%e6%96%b9%e6%b3%95%e6%98%af%e4%bb%80%e4%b9%88%e3%80%82\/"},"modified":"2025-08-12T17:17:23","modified_gmt":"2025-08-12T09:17:23","slug":"%e4%bd%bf%e7%94%a8mongodb%e5%9c%a8alibaba-cloud%e4%b8%8a%e5%88%9b%e5%bb%banode-js-rest-api%e7%9a%84%e6%96%b9%e6%b3%95%e6%98%af%e4%bb%80%e4%b9%88%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8mongodb%e5%9c%a8alibaba-cloud%e4%b8%8a%e5%88%9b%e5%bb%banode-js-rest-api%e7%9a%84%e6%96%b9%e6%b3%95%e6%98%af%e4%bb%80%e4%b9%88%e3%80%82\/","title":{"rendered":"\u4f7f\u7528MongoDB\u5728Alibaba Cloud\u4e0a\u521b\u5efaNode.js REST API\u7684\u65b9\u6cd5\u662f\u4ec0\u4e48"},"content":{"rendered":"

\u672c\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u5728\u963f\u91cc\u5df4\u5df4\u4e91\u4e0a\u5229\u7528MongoDB\u548cNode.js\u521b\u5efa\u5f3a\u5927\u7684REST API\u3002<\/p>\n

\u963f\u91cc\u5df4\u5df4\u4e91\u62e5\u6709\u4e24\u4e2a\u6570\u636e\u4e2d\u5fc3\u5728\u65e5\u672c\uff0c\u5e76\u62e5\u6709\u8d85\u8fc760\u4e2a\u53ef\u7528\u533a\u57df\uff0c\u662f\u4e9a\u592a\u5730\u533a\u7684\u9886\u5148\u4e91\u57fa\u7840\u8bbe\u65bd\u670d\u52a1\u63d0\u4f9b\u5546\uff08\u6839\u636e2019\u5e74Gartner\u6570\u636e\uff09\u3002\u6b32\u4e86\u89e3\u66f4\u591a\u963f\u91cc\u5df4\u5df4\u4e91\u7684\u8be6\u60c5\uff0c\u8bf7\u8bbf\u95ee\u963f\u91cc\u5df4\u5df4\u4e91\u5b98\u65b9\u7f51\u9875\u3002<\/p>\n

\u5b89\u88c5MongoDB\u5728\u963f\u91cc\u5df4\u5df4\u4e91ECS\u4e0a\u3002\u5b89\u88c5MongoDB\u5f88\u5bb9\u6613\u3002<\/p>\n
\n
\u30d1\u30c3\u30b1\u30fc\u30b8\u540d\u8aac\u660emongodb-org\u4ee5\u4e0b\u306e4\u3064\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u81ea\u52d5\u7684\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u30e1\u30bf\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002mongodb-org-server\u30c7\u30fc\u30e2\u30f3\u3068\u95a2\u9023\u3059\u308b\u8a2d\u5b9a\u30b9\u30af\u30ea\u30d7\u30c8\u3068 init \u30b9\u30af\u30ea\u30d7\u30c8\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002mongodb-org-mongos\u30c7\u30fc\u30e2\u30f3\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002mongodb-org-shell\u30b7\u30a7\u30eb\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002mongodb-org-tools\u4ee5\u4e0b\u306e MongoDB \u30c4\u30fc\u30eb\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059: mongoimport bsondump, mongodump, mongoexport, mongofiles, mongorestore, mongostat, and mongotop.mongodb-org-server \u5305\u63d0\u4f9b\u4e86\u5728 \/etc\/mongod.conf \u914d\u7f6e\u6587\u4ef6\u4e2d\u542f\u52a8 mongod \u7684\u521d\u59cb\u5316\u811a\u672c\u3002<\/p>\n

\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u4f7f\u7528\u6b64\u94fe\u63a5\u5728ECS Ubuntu\u670d\u52a1\u5668\u4e0a\u5b89\u88c5MongoDB\uff1ahttps:\/\/docs.mongodb.com\/manual\/tutorial\/install-mongodb-on-ubuntu\/<\/p>\n

\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u60a8\u53ef\u4ee5\u5f00\u59cb\u6784\u5efa\u7b80\u5355\u7684REST API\u3002<\/p>\n

REST API in Chinese can be paraphrased as “REST \u5e94\u7528\u7a0b\u5e8f\u63a5\u53e3” (REST .REST\u662fRepresentational State Transfer\u7684\u9996\u5b57\u6bcd\u7f29\u5199\u3002\u6700\u8fd1\uff0cREST API\u975e\u5e38\u6d41\u884c\uff0c\u5e76\u4e14\u88ab\u7528\u4e8e\u5904\u7406Web\u5e94\u7528\u7a0b\u5e8f\u548c\u79fb\u52a8\u5e94\u7528\u7a0b\u5e8f\u7684\u670d\u52a1\u5668\u7aef\u3002\u5b9e\u9645\u4e0a\uff0c\u5927\u591a\u6570\u77e5\u540d\u7684\u4e92\u8054\u7f51\u516c\u53f8\u90fd\u5f15\u5165\u4e86\u81f3\u5c11\u4e00\u4e9bREST API\uff0c\u6bd4\u5982Google\u65e5\u5386API\u3002\u4e00\u65e6\u6570\u636e\u5e93\u5efa\u7acb\u597d\u4e86\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528API\u8f7b\u677e\u5730\u5c06\u6570\u636e\u548c\u5185\u5bb9\u4f20\u9012\u7ed9\u5e94\u7528\u7a0b\u5e8f\u3002\u8fd9\u4e9bAPI\u8868\u793a\u670d\u52a1\u5668\u5982\u4f55\u5bf9\u8bf7\u6c42\u505a\u51fa\u54cd\u5e94\u548c\u63a5\u53d7\uff0c\u4ee5\u5b9e\u73b0CRUD\uff08\u521b\u5efa\u3001\u8bfb\u53d6\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u8fc7\u7a0b\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u7684API\uff0c\u4f7f\u5176\u53ef\u4ee5\u53d1\u5e03\u95ee\u9898\u3001\u56de\u7b54\u95ee\u9898\uff0c\u5e76\u5728\u53ef\u6269\u5c55\u7684MongoDB\u4e0a\u5bf9\u56de\u7b54\u8fdb\u884c\u6295\u7968\u548c\u5220\u9664\u3002\u6210\u529f\u5b9e\u73b0\u9879\u76ee\u7684\u5173\u952e\u5728\u4e8e\u6b63\u786e\u7ec4\u7ec7\u8def\u7531\u3002\u5728\u6b64\u60c5\u51b5\u4e0b\uff0c\u8def\u7531\u5c06\u88ab\u7f16\u7a0b\u5982\u4e0b\u3002<\/p>\n

1\u3001\u5206\u6790\u6295\u7a3f\u7684\u95ee\u9898
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\n3\u3001\u5bf9\u7b54\u6848\u8fdb\u884c\u6295\u7968\u8d5e\u6210\u6216\u53cd\u5bf9<\/p>\n

\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u60c5\u51b5\u5982\u4e0b\u3002<\/p>\n

\u5f00\u53d1\u73af\u5883\u5728\u8fd9\u4e2a\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4ee5\u4e0b\u5de5\u5177\u3002<\/p>\n

1\u3001\u7eaf\u7cb9\u7684JavaScript
\n2\u3001Node.js
\n3\u3001Express\uff08JavaScript\u6846\u67b6\uff09
\n4\u3001MongoDB\uff08\u6570\u636e\u5e93\uff09
\n5\u3001Yarn\uff08\u5305\u7ba1\u7406\u5de5\u5177\uff09
\n6\u3001Visual Studio Code\u4f5c\u4e3a\u7f16\u8f91\u5668
\n7\u3001Postman\uff08\u7528\u4e8e\u6d4b\u8bd5API\u7ec8\u70b9\uff09<\/p>\n

\u76f8\u4e92\u4f9d\u8d56\u4f7f\u7528\u6240\u9700\u7684\u4f9d\u8d56\u5305<\/p>\n

1\u3001\u89e3\u6790\u5668\uff08\u89e3\u6790\u53d7\u4fe1\u7aef\u70b9\u8bf7\u6c42\u7684\u6b63\u6587\uff09
\n2\u3001Express\uff08\u542f\u52a8\u5e94\u7528\u7a0b\u5e8f\uff09
\n3\u3001Nodemon\uff08\u91cd\u65b0\u542f\u52a8\u670d\u52a1\u5668\u4ee5\u53cd\u6620\u66f4\u6539\uff09
\n4\u3001Mongoose\uff08\u4f7f\u7528\u5bf9\u8c61\u6570\u636e\u6a21\u578b\u7b80\u5316\u4e0e MongoDB \u7684\u4ea4\u4e92\uff09
\n5\u3001Morgan\uff08\u5c06 HTTP \u8bf7\u6c42\u8bb0\u5f55\u5230\u65e5\u5fd7\u4e2d\u7684\u4e2d\u95f4\u4ef6\uff09
\n6\u3001Eslint with Airbnb\uff08\u662f\u7528\u4e8e\u8f85\u52a9\u521b\u5efa\u9ad8\u8d28\u91cf\u4ee3\u7801\u7684\u6269\u5c55\u529f\u80fd\uff09<\/p>\n

\u6559\u7a0b\u603b\u7ed3\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\u3002<\/p>\n

1\u3001\u4f7f\u7528 Express \u521b\u5efa API \u8def\u7531
\n2\u3001\u5efa\u6a21 API \u6570\u636e
\n3\u3001\u4f7f\u7528 Mongoose \u8fde\u63a5 MongoDB
\n4\u3001\u4f7f\u7528 Postman \u6e05\u7406\u548c\u6d4b\u8bd5 API<\/p>\n

\u7528Express\u6784\u5efaAPI\u8def\u7531\u3002<\/p>\n

\u57fa\u672c\u7684\u4e8b\u60c5 de\u8981\u7b80\u5316\u5f00\u53d1\u8fc7\u7a0b\uff0c\u4f60\u53ef\u4ee5\u5b89\u88c5nodemon\uff0c\u5e76\u5728package.json\u7684\u811a\u672c\u4e2d\u6dfb\u52a0\u547d\u4ee4\u3002<\/p>\n

1\u3001\u4f7f\u7528express\u521b\u5efa\u57fa\u672c\u7684Web\u670d\u52a1\u5668\uff08express\u6709\u6b64\u8fc7\u7a0b\u7684\u6559\u7a0b\uff09\u3002
\n2\u3001\u786e\u4fddExpress\u4e2d\u95f4\u4ef6\u914d\u7f6e\u7075\u6d3b\u3002
\n3\u3001\u5305\u62ec\u7528\u4e8e\u5904\u7406\u8bf7\u6c42\u7684body-parser\u3002
\n4\u3001\u5c06\u89e3\u6790\u5668\u6574\u5408\u5230Express\u4e2d\u95f4\u4ef6\u4e2d\u3002<\/p>\n

\u521b\u5efa\u4e00\u4e2a\u4f9b\u63d0\u95ee\u4f7f\u7528\u7684\u8def\u5f841\u3001\u5728\u670d\u52a1\u5668\u4e0a\u521b\u5efa\u5b58\u50a8\u6839\u76ee\u5f55\u7684\u6587\u4ef6\u3002
\n2\u3001\u4f7f\u7528POST\u548cGET\u4e24\u4e2a\u8def\u7531\u6765\u641c\u7d22\u95ee\u9898\u5e76\u6dfb\u52a0\u65b0\u95ee\u9898\u3002
\n3\u3001\u521b\u5efa\u5177\u4f53\u95ee\u9898\u7684GET\u8def\u7531\u3002<\/p>\n
router.get('\/', (req, res) => {\r\n  res.json({ response: 'a GET request for LOOKING at questions' });\r\n});\r\nrouter.post('\/', (req, res) => {\r\n  res.json({\r\n    response: 'a POST request for CREATING questions',\r\n    body: req.body\r\n  });\r\n});\r\nrouter.get('\/:qID', (req, res) => {\r\n  res.json({\r\n    response: `a GET request for LOOKING at a special answer id: ${req.params.qID}`\r\n  });\r\n});\r\n<\/code><\/pre>\n
\u56de\u7b54\u8def\u5f84 l\u00f9)1\u3001\u9996\u5148\uff0c\u8981\u5b89\u88c5Morgan HTTP\u8bf7\u6c42\u8bb0\u5f55\u5668\u3002 \u8fd9\u4e2a\u8f6f\u4ef6\u5305\u6709\u52a9\u4e8e\u60a8\u5206\u6790\u8bf7\u6c42\u3002
\n2\u3001\u7136\u540e\uff0c\u521b\u5efa\u4e00\u4e2aPOST\u8def\u7531\u6765\u63a5\u53d7\u56de\u5e94\u3002
\n3\u3001\u63a5\u4e0b\u6765\uff0c\u5305\u62ecPUT\u548cDELETE\u4ee5\u4f7f\u7f16\u8f91\u548c\u5220\u9664\u56de\u5e94\u6210\u4e3a\u53ef\u80fd\u3002
\n4\u3001\u521b\u5efa\u7528\u4e8e\u56de\u5e94\u4e0a\u6295\u7968\u548c\u4e0b\u6295\u7968\u7684POST\u8def\u7531\uff08\u5728\u672c\u6559\u7a0b\u4e2d\u4f7f\u7528\u7b80\u5355\u7684\u6295\u7968\uff09\u3002<\/p>\n
router.post('\/:qID\/answers', (req, res) => {\r\n  res.json({\r\n    response: 'a POST request for CREATING answers',\r\n    question: req.params.qID,\r\n    body: req.body\r\n  });\r\n});\r\nrouter.put('\/:qID\/answers\/:aID', (req, res) => {\r\n  res.json({\r\n    response: 'a PUT request for EDITING answers',\r\n    question: req.params.qID,\r\n    answer: req.params.aID,\r\n    body: req.body\r\n  });\r\n});\r\nrouter.delete('\/:qID\/answers\/:aID', (req, res) => {\r\n  res.json({\r\n    response: 'a DELETE request for DELETING answers',\r\n    question: req.params.qID,\r\n    answer: req.params.aID,\r\n    body: req.body\r\n  });\r\n});\r\nrouter.post('\/:qID\/answers\/:aID\/vote-:dec', (req, res) => {\r\n  res.json({\r\n    response: 'a POST request for VOTING on answers',\r\n    question: req.params.qID,\r\n    answer: req.params.aID,\r\n    vote: req.params.dec,\r\n    body: req.body\r\n  });\r\n});\r\n<\/code><\/pre>\n
\u9519\u8bef\u5904\u7406\u5668\u51e0\u4e4e\u4e0d\u53ef\u80fd\u907f\u514d\u4efb\u4f55\u5e94\u7528\u7a0b\u5e8f\u51fa\u9519\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8bbe\u7f6e\u9519\u8bef\u5904\u7406\u5668\u3002<\/p>\n
1\u3001\u4e2d\u95f4\u4ef6\u4f5c\u4e3a “\u9519\u8bef\u6355\u6349\u5668” \u6765\u8fd0\u4f5c\u3002
\n2\u3001\u5728\u6355\u6349\u5230 404 \u9519\u8bef\u540e\uff0c\u4f7f\u7528\u4e2d\u95f4\u4ef6\u5c06\u5176\u4f20\u9012\u7ed9\u81ea\u5b9a\u4e49\u5904\u7406\u7a0b\u5e8f\u4ee5JSON\u54cd\u5e94\u683c\u5f0f\u8fdb\u884c\u56de\u5e94(\u5426\u5219\uff0c\u4f1a\u4f7f\u7528500\u9519\u8bef)\u3002
\n3\u3001\u8bbe\u7f6e\u9a8c\u8bc1\u4e2d\u95f4\u4ef6\uff0c\u4f7f\u9519\u8bef\u7684\u4e0a\u6295\u7968\u548c\u4e0b\u6295\u7968\u6210\u4e3a\u53ef\u80fd\u3002<\/p>\n
app.use((req, res, next) => {\r\n  const err = new Error('Not Found');\r\n  err.status = 404;\r\n  next(err);\r\n});\r\napp.use((err, req, res, next) => {\r\n  res.status(err.status || 500);\r\n  res.json({\r\n    error: {\r\n      message: err.message\r\n    }\r\n  });\r\n});\r\n<\/code><\/pre>\n
\u4f7f\u7528 Mongoose \u8fde\u63a5\u5230 MongoDB\u3002<\/p>\n
\u9009\u62e9API\u7684\u6570\u636e\u6a21\u578b\u5728MongoDB\u7684\u5b58\u50a8\u4e2d\uff0c\u9009\u62e9\u7684\u6570\u636e\u7c7b\u578b\u5fc5\u987b\u6e05\u6670\u5730\u8868\u793a\u6b63\u786e\u7684\u7ed3\u6784\u548c\u5173\u7cfb\u975e\u5e38\u91cd\u8981\u3002Mongoose\u4f5c\u4e3a\u8fde\u63a5\u5230MongoDB\u7684\u7f51\u5173\u8d77\u4f5c\u7528\u3002\u5b83\u7528\u4e8e\u521b\u5efa\u63a5\u53d7JSON\u6570\u636e\u683c\u5f0f\u7684\u6a21\u5f0f\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528\u5177\u6709\u56de\u7b54\u5c5e\u6027\u7684\u95ee\u9898\u5bf9\u8c61\u662f\u6700\u4f73\u65b9\u6cd5\u3002\u7136\u800c\uff0c\u8981\u8bb0\u4f4fMongo\u6587\u6863\u4e2d\u5b58\u50a8\u5355\u5143\u7684\u6700\u5927\u6570\u91cf\uff0c\u56e0\u6b64\u5bf9\u4e8e\u95ee\u9898\u7684\u56de\u7b54\u5e76\u975e\u65e0\u9650\u5236\u3002<\/p>\n
\u521b\u5efa\u6a21\u5f0f1\u3001\u6839\u636e\u6240\u9009\u7684\u7236\u5b50\u7ed3\u6784\uff0c\u5728Mongoose\u4e2d\u521b\u5efa\u9002\u5f53\u7684\u6a21\u5f0f\u3002
\n2\u3001\u5229\u7528\u6a21\u5f0f\u6784\u5efa\u6a21\u578b\u3002<\/p>\n
const AnswerSchema = new Schema({\r\n  text: String,\r\n  createdAt: { type: Date, default: Date.now },\r\n  updatedAt: { type: Date, default: Date.now },\r\n  votes: { type: Number, default: 0 }\r\n});\r\nconst QuestionSchema = new Schema({\r\n  text: String,\r\n  createdAt: { type: Date, default: Date.now },\r\n  answers: [AnswerSchema]\r\n});\r\nconst Question = mongoose.model('Question', QuestionSchema);\r\n<\/code><\/pre>\n
\u5728\u529f\u80fd\u4e2d\u6dfb\u52a0\u6392\u5e8f\u548c\u6295\u7968\u9009\u9879
\n1\u3001\u4f18\u5148\u8003\u8651\u6700\u65b0\u7684\u7b54\u6848\u3002
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const sortAnswers = (a, b) => {\r\n  if (a.votes === b.votes) {\r\n    return b.updatedAt - a.updatedAt;\r\n  }\r\n  return b.votes - a.votes;\r\n};\r\nQuestionSchema.pre('save', function (next) {\r\n  this.answers.sort(sortAnswers);\r\n  next();\r\n});\r\nAnswerSchema.method('update', function (updates, callback) {\r\n  Object.assign(this, updates, { updatedAt: new Date() });\r\n  this.parent().save(callback);\r\n});\r\nAnswerSchema.method('vote', function (vote, callback) {\r\n  if (vote === 'up') {\r\n    this.votes += 1;\r\n  } else {\r\n    this.votes -= 1;\r\n  }\r\n  this.parent().save(callback);\r\n});\r\n<\/code><\/pre>\n
\u5c06API\u8fde\u63a5\u5230MongoDB\u4f60\u6b63\u5728\u5c1d\u8bd5\u89e3\u51b3\u6211\u8ba4\u4e3a\u6700\u56f0\u96be\u7684\u4efb\u52a1\u3002\u8bf7\u73b0\u5728\u4ed4\u7ec6\u67e5\u770bMongoose\u7684\u6587\u6863\u3002<\/p>\n
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router.param('qID', (req, res, next, id) => {\r\n  Question.findById(id, (err, doc) => {\r\n    if (err) return next(err);\r\n    if (!doc) {\r\n      err = new Error('Document not found');\r\n      err.status = 404;\r\n      return next(err);\r\n    }\r\n    req.question = doc;\r\n    return next();\r\n  });\r\n});\r\nrouter.param('aID', (req, res, next, id) => {\r\n  req.answer = req.question.answers.id(id);\r\n  if (!req.answer) {\r\n    err = new Error('Answer not found');\r\n    err.status = 404;\r\n    return next(err);\r\n  }\r\n  return next();\r\n});\r\n<\/code><\/pre>\n
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\n2\u3001\u8fd4\u56de\u76f8\u5e94\u7684\u95ee\u9898\u3002
\n3\u3001\u540c\u65f6\uff0c\u4f7f\u7528POST\u8def\u7531\u5c06\u65b0\u95ee\u9898\u4ee5JSON\u683c\u5f0f\u53d1\u5e03\u5230\u6570\u636e\u5e93\u3002
\n4\u3001\u4e3a\u6bcf\u4e2a\u95ee\u9898\u6307\u5b9a\u4e00\u4e2aGET\u8def\u7531\u3002<\/p>\n
router.get('\/', (req, res, next) => {\r\n  Question.find({}).sort({ createdAt: -1 }).exec((err, questions) => {\r\n    if (err) return next(err);\r\n    res.json(questions);\r\n  });\r\n});\r\nrouter.post('\/', (req, res) => {\r\n  const question = new Question(req.body);\r\n  question.save((err, question) => {\r\n    if (err) return next(err);\r\n    res.status(201);\r\n    res.json(question);\r\n  });\r\n});\r\nrouter.get('\/:qID', (req, res) => {\r\n  res.json(req.question);\r\n});\r\n<\/code><\/pre>\n
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\n2\u3001\u4f7f\u7528update\u65b9\u6cd5\u53ef\u4ee5\u901a\u8fc7\u8fd4\u56de\u65b0\u7684JSON\u8f93\u5165\u6765\u66f4\u65b0\u7b54\u6848\u3002
\n3\u3001\u56e0\u6b64\uff0c\u5982\u679c\u8981\u4f7f\u7528DELETE\u8def\u7531\u5220\u9664\u7b54\u6848\uff0c\u5219\u4f7f\u7528remove\u65b9\u6cd5\u3002
\n4\u3001\u5bf9\u4e8e\u6295\u7968\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5165\u5728\u4e2d\u95f4\u4ef6\u4e2d\u7684POST\u8def\u7531\uff0c\u5728vote\u65b9\u6cd5\u4e2d\u4fdd\u5b58\u6295\u7968\u3002
\n\u4ee5\u4e0b\u793a\u4f8b\u5bf9\u6b64\u64cd\u4f5c\u8fdb\u884c\u4e86\u8bf4\u660e\u3002<\/p>\n
router.post('\/:qID\/answers', (req, res, next) => {\r\n  req.question.answers.push(req.body);\r\n  req.question.save((err, question) => {\r\n    if (err) return next(err);\r\n    res.status(201);\r\n    res.json(question);\r\n  });\r\n});\r\nrouter.put('\/:qID\/answers\/:aID', (req, res, next) => {\r\n  req.answer.update(req.body, (err, result) => {\r\n    if (err) return next(err);\r\n    res.json(result);\r\n  });\r\n});\r\nrouter.delete('\/:qID\/answers\/:aID', (req, res) => {\r\n  req.answer.remove(err => {\r\n    req.question.save((err, question) => {\r\n      if (err) return next(err);\r\n      res.json(question);\r\n    });\r\n  });\r\n});\r\nrouter.post(\r\n  '\/:qID\/answers\/:aID\/vote-:dec',\r\n  (req, res, next) => {\r\n    if (req.params.dec.search(\/^(up|down)$\/) === -1) {\r\n      const err = new Error(`Not possible to vot for ${req.params.dec}!`);\r\n      err.status = 404;\r\n      next(err);\r\n    } else {\r\n      req.vote = req.params.dec;\r\n      next();\r\n    }\r\n  },\r\n  (req, res, next) => {\r\n    req.answer.vote(req.vote, (err, question) => {\r\n      if (err) return next(err);\r\n      res.json(question);\r\n    });\r\n  }\r\n);\r\n<\/code><\/pre>\n
\u73b0\u5728\uff0cREST API\u5c06\u5f00\u59cb\u88ab\u4f7f\u7528\u3002\u73b0\u5728\uff0cREST API\u5df2\u7ecf\u51c6\u5907\u5c31\u7eea\u53ef\u4ee5\u88ab\u4f7f\u7528\u4e86\u3002\u63a5\u4e0b\u6765\u8fdb\u5165\u4e0b\u4e00\u4e2a\u9636\u6bb5\u3002<\/p>\n
\u6e05\u7406\u548c\u6d4b\u8bd5\u7ec8\u7aef\u70b9<\/p>\n
API\u7684\u6d4b\u8bd5\u5728\u6d4b\u8bd5\u6240\u6709\u7684\u7ec8\u7aef\u70b9\u529f\u80fd\u65f6\uff0c\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528Postman\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528Chrome\u6269\u5c55\u6216\u8005\u4e0b\u8f7d\u684c\u9762\u5e94\u7528\u7a0b\u5e8f\u6765\u5b9e\u73b0\u3002\u65e0\u8bba\u9009\u62e9\u54ea\u4e2a\u65b9\u5f0f\u90fd\u53ef\u4ee5\uff0c\u4f46\u6211\u4e2a\u4eba\u66f4\u559c\u6b22\u4f7f\u7528Chrome\u6269\u5c55\u3002Postman\u7684\u4f7f\u7528\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u53ef\u4ee5\u8fdb\u884cHTTP\u6d4b\u8bd5\u3002\u5982\u679c\u60a8\u4e0d\u60f3\u624b\u52a8\u6d4b\u8bd5\uff0c\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u81ea\u52a8\u5316\u6d4b\u8bd5\u3002<\/p>\n
\u8de8\u6e90\u8d44\u6e90\u5171\u4eab\u51fa\u4e8e\u5b89\u5168\u8003\u8651\uff0cCORS\u53d7\u5230\u4e86\u9650\u5236\u3002\u57fa\u672c\u4e0a\uff0c\u5b83\u662f\u5141\u8bb8\u6d4f\u89c8\u5668\u8bbf\u95ee\u57df\u8d44\u6e90\u7684\u65b9\u6cd5\u3002\u56e0\u6b64\uff0c\u9700\u8981\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4f7f\u7528\u4e2d\u95f4\u4ef6\u6765\u5b9e\u73b0\u4ece\u57df\u4e2d\u6d88\u8d39API\u7684\u529f\u80fd\u3002<\/p>\n
1\u3001\u6240\u6709\u7684\u6765\u6e90\u90fd\u9700\u8981\u6709\u8bbf\u95ee\u9996\u90e8\u7684\u6743\u9650\u3002
\n2\u3001\u4f7fHTTP\u8bf7\u6c42\u6709\u6548\u3002<\/p>\n
app.use((req, res, next) => {\r\n  res.header('Access-Control-Allow-Origin', '*');\r\n  res.header(\r\n    'Access-Control-Allow-Headers',\r\n    'Origin, X-Requested-With, Content-Type, Accept'\r\n  );\r\n  if (req.method === 'Options') {\r\n    res.header('Access-Control-Allow-Methods', 'PUT, POST, DELETE');\r\n    return res.status(200).json({});\r\n  }\r\n});\r\n<\/code><\/pre>\n
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\u7e3d\u7d50REST API\u662f\u4e00\u79cd\u975e\u5e38\u597d\u7528\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u8bbe\u7f6e\u53ef\u6269\u5c55\u7684\u540e\u7aef\u5fae\u670d\u52a1\u3002\u5728\u8fd9\u4e2a\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528Mongoose\u5728\u53ef\u6269\u5c55\u7684\u5f00\u6e90\u6570\u636e\u5e93MongoDB\u4e0a\u5b9e\u73b0\u4e86\u4e00\u4e2a\u7b80\u5355\u7684API\u3002\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528\u963f\u91cc\u5df4\u5df4\u4e91\u5728MongoDB\u4e0a\u8fd0\u884c\u79fb\u52a8\u5e94\u7528\u7a0b\u5e8f\u3002\u5e0c\u671b\u60a8\u559c\u6b22\u8fd9\u7bc7\u6587\u7ae0\u3002<\/p>\n
\u963f\u91cc\u5df4\u5df4\u4e91\u5df2\u5728\u65e5\u672c\u5efa\u7acb\u4e86\u4e24\u4e2a\u6570\u636e\u4e2d\u5fc3\uff0c\u5e76\u62e5\u6709\u8d85\u8fc760\u4e2a\u53ef\u7528\u533a\uff0c\u88ab\u8a89\u4e3a2019\u5e74\u4e9a\u592a\u5730\u533aNo.1\uff08\u6839\u636eGartner\uff09\u7684\u4e91\u57fa\u7840\u8bbe\u65bd\u63d0\u4f9b\u5546\u3002
\n\u6b32\u4e86\u89e3\u66f4\u591a\u963f\u91cc\u5df4\u5df4\u4e91\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u70b9\u51fb\u6b64\u5904\u67e5\u770b\u963f\u91cc\u5df4\u5df4\u4e91\u65e5\u672c\u5b98\u65b9\u9875\u9762\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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