npm init -y<\/code>\u540e\uff0c\u6587\u4ef6\u5939\u91cc\u4f1a\u751f\u6210package.json<\/code>\u6587\u4ef6\uff0c\u8fd9\u662f\u9879\u76ee\u7684\u6838\u5fc3\u914d\u7f6e\u6587\u4ef6\uff0c\u8bb0\u5f55\u4f9d\u8d56\u548c\u811a\u672c<\/p>\n\n\n\n#\u521d\u59cb\u5316npm\u9879\u76ee\n\nnpm init<\/code><\/pre>\n\n\n\n![\"\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/figure>\n\n\n\n2.\u5b89\u88c5 express mongoose \u4f9d\u8d56<\/h2>\n\n\n\n
--save<\/code>\u4f1a\u628a Express \u6dfb\u52a0\u5230package.json<\/code>\u7684dependencies<\/code>\u4e2d\uff0c\u786e\u4fdd\u5176\u4ed6\u4eba\u514b\u9686\u9879\u76ee\u540e\u80fd\u5b89\u88c5\u76f8\u540c\u4f9d\u8d56\u3002<\/p>\n\n\n\nnpm install express mongoose --save<\/code><\/pre>\n\n\n\n3.\u5b89\u88c5\u4e0b\u56fe\u521b\u5efa\u597d\u5bf9\u5e94\u6587\u4ef6\u5939\u53ca\u6587\u4ef6<\/h2>\n\n\n\n<\/div><\/figure>\n\n\n\n4.\u6839\u636e\u4ee5\u4e0b\u4ee3\u7801\u586b\u5199\u5bf9\u5e94\u6587\u4ef6\u4e2d<\/h2>\n\n\n\n- db.js<\/a><\/li>
- index.js<\/a><\/li>
- app.js<\/a><\/li>
- server.js<\/a><\/li><\/ul><\/div>\/\/\u8be5\u6587\u4ef6\u4e3a\u8fde\u63a5MongoDB \u6570\u636e\u5e93\u7684\u914d\u7f6e\u6587\u4ef6
\/\/ MongoDB \u8fde\u63a5\u6a21\u5757
const mongoose = require(‘mongoose’);
const config = require(‘.\/index’);
async function connect() {
\u00a0 const uri = process.env.MONGO_URI || config.mongoUri;
\u00a0 if (!uri) {
\u00a0 \u00a0 throw new Error(‘MongoDB URI \u672a\u914d\u7f6e\uff0c\u8bf7\u5728 config\/index.js \u4e2d\u8bbe\u7f6e mongoUri \u6216\u901a\u8fc7\u73af\u5883\u53d8\u91cf MONGO_URI \u4f20\u5165\u3002’);
\u00a0 }
\u00a0 try {
\u00a0 \u00a0 \/\/ \u65b0\u7248\u672c\u7684mongoose\u4e0d\u518d\u9700\u8981\u8fd9\u4e9b\u9009\u9879\uff0c\u5df2\u9ed8\u8ba4\u542f\u7528
\u00a0 \u00a0 await mongoose.connect(uri);
\u00a0 \u00a0 console.log(‘MongoDB \u5df2\u8fde\u63a5’);
\u00a0 } catch (err) {
\u00a0 \u00a0 console.error(‘\u65e0\u6cd5\u8fde\u63a5\u5230 MongoDB:’, err);
\u00a0 \u00a0 throw err;
\u00a0 }
}
module.exports = {
\u00a0 connect,
\u00a0 mongoose
};
<\/div>\/\/ \u670d\u52a1\u5668\u914d\u7f6e\u6587\u4ef6
module.exports = {
\u00a0 \u00a0 \/\/ \u670d\u52a1\u5668\u7aef\u53e3\u53f7
\u00a0 \u00a0 port: 4413,
\u00a0 \u00a0 \/\/ \u4e3b\u673a\u5730\u5740
\u00a0 \u00a0 host: ‘localhost’,
\u00a0 \u00a0 \/\/ \u9759\u6001\u6587\u4ef6\u76ee\u5f55\u914d\u7f6e
\u00a0 \u00a0 \/\/ MongoDB \u8fde\u63a5\u5b57\u7b26\u4e32\uff08\u4f7f\u7528\u8fdc\u7a0bMongoDB\uff09
\u00a0 \u00a0 mongoUri: ‘mongodb\u6570\u636e\u5e93\u7684\u8fde\u63a5\u5730\u5740’
};<\/div>\/\/\u9879\u76ee\u914d\u7f6e\u5730\u4e2d\u95f4\u4ef6\uff0c\u6ce8\u518capi\u7b49
const express = require(‘express’);
const app = express();
\/\/\u5199\u4e00\u4e2aget\u7684api
app.get(‘\/’, (req, res) => {
\u00a0 res.send(‘\u8fd9\u662fnode\u9879\u76ee’);
});
module.exports = app;<\/div>const app = require(“.\/app”)
const config = require(‘.\/config’);
const MongoDB = require(“.\/config\/db”)
const PORT = config.port || 4411;
\/\/ \u8fde\u63a5\u6570\u636e\u5e93\u5e76\u542f\u52a8\u670d\u52a1\u5668
MongoDB.connect().then(() => {
\u00a0 \u00a0 console.log(‘MongoDB \u5df2\u8fde\u63a5’);
\u00a0 \u00a0
\u00a0 \u00a0 \/\/ \u542f\u52a8\u670d\u52a1\u5668
\u00a0 \u00a0 const server = app.listen(PORT, () => {
\u00a0 \u00a0 \u00a0 \u00a0 console.log(`\u670d\u52a1\u5668\u8fd0\u884c\u5728 http:\/\/localhost:${PORT}`);
\u00a0 \u00a0 });
\u00a0 \u00a0
\u00a0 \u00a0 \/\/ \u6dfb\u52a0\u9519\u8bef\u76d1\u542c\u5668\uff0c\u5904\u7406\u670d\u52a1\u5668\u542f\u52a8\u9519\u8bef
\u00a0 \u00a0 server.on(‘error’, function(err) {
\u00a0 \u00a0 \u00a0 \u00a0 console.log(‘\u670d\u52a1\u5668\u542f\u52a8\u9519\u8bef:’);
\u00a0 \u00a0 \u00a0 \u00a0 if (err.code === ‘EADDRINUSE’) {
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 console.log(‘ – \u9519\u8bef\u4ee3\u7801: EADDRINUSE’);
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 console.log(` – \u9519\u8bef\u63cf\u8ff0: \u7aef\u53e3${PORT}\u5df2\u88ab\u5360\u7528`);
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 console.log(‘ – \u89e3\u51b3\u65b9\u6cd5: \u8bf7\u5173\u95ed\u5360\u7528\u8be5\u7aef\u53e3\u7684\u5e94\u7528\u6216\u4fee\u6539\u670d\u52a1\u5668\u7aef\u53e3’);
\u00a0 \u00a0 \u00a0 \u00a0 } else {
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 console.log(‘ – \u9519\u8bef\u4ee3\u7801:’, err.code);
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 console.log(‘ – \u9519\u8bef\u4fe1\u606f:’, err.message);
\u00a0 \u00a0 \u00a0 \u00a0 }
\u00a0 \u00a0 \u00a0 \u00a0 process.exit(1);
\u00a0 \u00a0 });
}).catch(err => {
\u00a0 \u00a0 console.error(‘\u65e0\u6cd5\u8fde\u63a5\u5230 MongoDB:’, err);
\u00a0 \u00a0 process.exit(1);
});
\/\/ \u5904\u7406\u672a\u6355\u83b7\u7684\u5f02\u5e38
process.on(‘uncaughtException’, (error) => {
\u00a0 \u00a0 console.error(‘\u672a\u6355\u83b7\u7684\u5f02\u5e38:’, error);
\u00a0 \u00a0 process.exit(1);
});
\/\/ \u5904\u7406Promise rejection
process.on(‘unhandledRejection’, (reason, promise) => {
\u00a0 \u00a0 console.error(‘\u672a\u5904\u7406\u7684Promise rejection:’, reason);
});
module.exports = null; \/\/ server \u5728\u6210\u529f\u8fde\u63a5\u540e\u624d\u4f1a\u521b\u5efa\u5e76\u76d1\u542c<\/div><\/div><\/div><\/div>\n\n\n\n5.\u67e5\u770b\u4f9d\u8d56\u6587\u4ef6package.json\uff0c\u4fee\u6539\u542f\u52a8\u6587\u4ef6\uff08server.js\uff09<\/h2>\n\n\n\n
\u5c06”main”\u8bbe\u7f6e\u4e3a”server.js”<\/p>\n\n\n\n
{\n \"name\": \"allapi\",\n \"version\": \"1.0.0\",\n \"main\": \"server.js\",\n \"scripts\": {\n \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\n },\n \"author\": \"\",\n \"license\": \"ISC\",\n \"description\": \"\",\n \"dependencies\": {\n \"express\": \"^5.2.1\",\n \"mongoose\": \"^9.1.5\"\n }\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"1.\u786e\u5b9a\u597d\u81ea\u5df1\u7684\u9879\u76ee\u76ee\u5f55,\u7136\u540e\u5bf9\u4e0b\u9762\u4ee3\u7801\u8fdb\u884c\u9879\u76ee\u521d\u59cb\u5316(\u751f\u6210\u9879\u76ee\u4f9d\u8d56\u6587\u4ef6) \u6267\u884c\u5b8cnpm init -y\u540e\uff0c\u6587 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[17],"tags":[],"class_list":["post-399","post","type-post","status-publish","format-standard","hentry","category-node"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=\/wp\/v2\/posts\/399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=399"}],"version-history":[{"count":8,"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=\/wp\/v2\/posts\/399\/revisions"}],"predecessor-version":[{"id":413,"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=\/wp\/v2\/posts\/399\/revisions\/413"}],"wp:attachment":[{"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linerroom.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/www.linerroom.cn\/wp-content\/uploads\/2026\/01\/image.png\")
<\/div><\/figure>\n\n\n\n![\"\"](\"https:\/\/www.linerroom.cn\/wp-content\/uploads\/2026\/01\/image-1.png\")
<\/div><\/figure>\n\n\n\n