{"id":81314,"date":"2024-10-16T15:17:16","date_gmt":"2024-10-16T07:17:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/81314\/"},"modified":"2024-10-16T15:17:16","modified_gmt":"2024-10-16T07:17:16","slug":"node-js%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%a5%e6%94%b6%e5%8f%8a%e8%99%95%e7%90%86%e5%8a%9f%e8%83%bd-node-js%e6%8e%a5%e6%94%b6%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/81314\/","title":{"rendered":"Node.js\u5be6\u73fe\u6578\u64da\u5eab\u63a5\u6536\u53ca\u8655\u7406\u529f\u80fd (Node.js\u63a5\u6536\u6578\u64da\u5eab)"},"content":{"rendered":"

Node.js\u5be6\u73fe\u6578\u64da\u5eab\u63a5\u6536\u53ca\u8655\u7406\u529f\u80fd<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u958b\u767c\u4e2d\uff0cNode.js\u56e0\u5176\u9ad8\u6548\u7684\u975e\u963b\u585eI\/O\u6a21\u578b\u800c\u53d7\u5230\u5ee3\u6cdb\u95dc\u6ce8\u3002\u7279\u5225\u662f\u5728\u8655\u7406\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0cNode.js\u80fd\u5920\u63d0\u4f9b\u5feb\u901f\u7684\u6578\u64da\u63a5\u6536\u548c\u8655\u7406\u80fd\u529b\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Node.js\u4f86\u5be6\u73fe\u6578\u64da\u5eab\u7684\u63a5\u6536\u53ca\u8655\u7406\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n

Node.js\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5<\/h2>\n

\u8981\u5728Node.js\u4e2d\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\uff0c\u9996\u5148\u9700\u8981\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\u3002\u5c0d\u65bc\u5e38\u898b\u7684\u6578\u64da\u5eab\uff0c\u5982MySQL\u3001MongoDB\u548cPostgreSQL\uff0cNode.js\u90fd\u6709\u76f8\u61c9\u7684\u5eab\u53ef\u4f9b\u4f7f\u7528\u3002<\/p>\n

\u5b89\u88dd\u6578\u64da\u5eab\u9a45\u52d5<\/h3>\n

\u4ee5MySQL\u70ba\u4f8b\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88ddmysql2\u9a45\u52d5\uff1a<\/p>\n

npm install mysql2<\/code><\/pre>\n
\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n
\u5b89\u88dd\u5b8c\u9a45\u52d5\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u5efa\u7acb\u8207MySQL\u6578\u64da\u5eab\u7684\u9023\u63a5\uff1a<\/p>\n
const mysql = require('mysql2');\n\nconst connection = mysql.createConnection({\n  host: 'localhost',\n  user: 'your_username',\n  password: 'your_password',\n  database: 'your_database'\n});\n\nconnection.connect((err) => {\n  if (err) {\n    console.error('\u9023\u63a5\u5931\u6557: ' + err.stack);\n    return;\n  }\n  console.log('\u5df2\u9023\u63a5\u4f5c\u70ba ID ' + connection.threadId);\n});<\/code><\/pre>\n
\u63a5\u6536\u6578\u64da\u4e26\u5b58\u5132\u5230\u6578\u64da\u5eab<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u5982\u4f55\u63a5\u6536\u6578\u64da\u4e26\u5c07\u5176\u5b58\u5132\u5230\u6578\u64da\u5eab\u4e2d\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u5f9e\u7528\u6236\u7aef\u63a5\u6536\u8acb\u6c42\uff0c\u7136\u5f8c\u5c07\u6578\u64da\u63d2\u5165\u5230\u6578\u64da\u5eab\u4e2d\u3002<\/p>\n
\u8a2d\u7f6eExpress\u4f3a\u670d\u5668<\/h3>\n
\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u8a2d\u7f6e\u4e00\u500b\u7c21\u55ae\u7684Express\u4f3a\u670d\u5668\u4f86\u63a5\u6536HTTP\u8acb\u6c42\uff1a<\/p>\n
const express = require('express');\nconst app = express();\napp.use(express.json()); \/\/ \u89e3\u6790JSON\u8acb\u6c42\u9ad4\n\napp.post('\/api\/data', (req, res) => {\n  const { name, age } = req.body;\n  const query = 'INSERT INTO users (name, age) VALUES (?, ?)';\n  \n  connection.query(query, [name, age], (err, results) => {\n    if (err) {\n      return res.status(500).send('\u6578\u64da\u63d2\u5165\u5931\u6557');\n    }\n    res.status(200).send('\u6578\u64da\u63d2\u5165\u6210\u529f');\n  });\n});\n\napp.listen(3000, () => {\n  console.log('\u4f3a\u670d\u5668\u6b63\u5728\u904b\u884c\u65bc http:\/\/localhost:3000');\n});<\/code><\/pre>\n
\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da<\/h2>\n
\u9664\u4e86\u63d2\u5165\u6578\u64da\uff0c\u60a8\u9084\u53ef\u80fd\u9700\u8981\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5be6\u73fe\u7684\uff1a<\/p>\n
app.get('\/api\/users', (req, res) => {\n  const query = 'SELECT * FROM users';\n  \n  connection.query(query, (err, results) => {\n    if (err) {\n      return res.status(500).send('\u6578\u64da\u6aa2\u7d22\u5931\u6557');\n    }\n    res.status(200).json(results);\n  });\n});<\/code><\/pre>\n
\u932f\u8aa4\u8655\u7406<\/h2>\n
\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u932f\u8aa4\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u60a8\u61c9\u8a72\u78ba\u4fdd\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u59a5\u5584\u8655\u7406\u932f\u8aa4\uff0c\u4ee5\u63d0\u9ad8\u61c9\u7528\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
connection.query(query, (err, results) => {\n  if (err) {\n    console.error('\u6578\u64da\u5eab\u932f\u8aa4: ', err);\n    return res.status(500).send('\u4f3a\u670d\u5668\u932f\u8aa4');\n  }\n  \/\/ \u8655\u7406\u7d50\u679c\n});<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
Node.js\u63d0\u4f9b\u4e86\u4e00\u500b\u5f37\u5927\u7684\u74b0\u5883\u4f86\u5be6\u73fe\u6578\u64da\u5eab\u7684\u63a5\u6536\u53ca\u8655\u7406\u529f\u80fd\u3002\u901a\u904e\u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u5eab\u9a45\u52d5\u548c\u6846\u67b6\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u69cb\u5efa\u9ad8\u6548\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u7121\u8ad6\u662f\u63d2\u5165\u6578\u64da\u9084\u662f\u6aa2\u7d22\u6578\u64da\uff0cNode.js\u90fd\u80fd\u5920\u63d0\u4f9b\u5feb\u901f\u7684\u97ff\u61c9\u6642\u9593\u548c\u826f\u597d\u7684\u6027\u80fd\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684Node.js\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5982\u4f55\u4f7f\u7528Node.js\u5be6\u73fe\u6578\u64da\u5eab\u7684\u63a5\u6536\u53ca\u8655\u7406\u529f\u80fd\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u958b\u767c\u6d41\u7a0b\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-81314","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/81314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=81314"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/81314\/revisions"}],"predecessor-version":[{"id":81315,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/81314\/revisions\/81315"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=81314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=81314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=81314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}