node.js - node - About writing beautiful app.js

Question

I’m a newbie and I have some questions about node.
My app.js looks like this:

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

//api
var a_api = require('./routes/api/a');
var b_api = require('./routes/api/b');
var c_api = require('./routes/api/c');
var d_api = require('./routes/api/d');

app.use('/api', [a_api, b_api, c_api, d_api]);

a.js

var express = require('express');
var router = express.Router();
var async = require('async');

router.get('/:id/:name/home', function (req, res, next) {
    var id = req.params.id;
    var name = req.params.name;
    res.writeHead(200, {'Content-Type': 'application/json'});
    res.end(JSON.stringify({'id':id,'name':name}));
   
});

module.exports = router;

Assuming that there are 100 routing interfaces now, don’t I need to require 100 files in the app and then configure them in use 100 times? I always feel that the writing is wrong. If I want to write a static loader, how should I write it? ?

Answer 1

The following is my personal opinion:
1.app.js is a service startup file and should not deal with routes (routes) too much. Taking the picture of the subject as an example, every time I want to add a new route, I need to Modify app.js, and app.js will become longer and longer
2. Attached is my solution to this problem

// /app.js -- 项目启动文件
// import routes
const api = require('./routes/index')
// set baseUrl
app.use('/api', api) // '/api' 作为根地址，只需定义一次

// /routes/index.js -- 定义所有的路由
const router = require('express').Router()

// defined api list -- 每一行对应一个文件
router.use('/login', require('./login')) // 该路由的根地址 '/login'
router.use('/register', require('./register')) // 该路由的根地址 '/register'
// ...

module.exports = router

// /routes/login.js -- 路由具体实现
const router = require('express').Router()

// 实际api地址 /api/login
router.post('/', function (req, res, next) {
  res.json('do something...')
})

// 实际api地址 /api/login/auth
router.post('/auth', function (req, res, next) {
  res.json('do something...')
})

module.exports = router

3. Hope this helps the topic owner

Answer 2

Your routing should be divided into modules.
Generally one module and one js

• User module user.js /users/xxx

• Order module order.js /order/xxx
  ...

Even if you have 100 URLs, generally speaking, there will not be many modules. 10 modules is no longer a small system. It looks good when you write it like this

tips:
express sends json

router.get('/:id/:name/home', function (req, res, next) {
    var id = req.params.id;
    var name = req.params.name;
    res.json({name:name,id:id});
   
});

Answer 3

App.js generally writes the first part of the url, and writes the remaining part in specific js. For example, a url is localhost:3000/use/index. For this url, you can write the use part of the url in app.js , the index part is written in a specific js, such as a.js, then the writing method in app.js is app.use('use',a), and then write router.get('/index', fn), when designing the URL, you can design a fixed first half of the URL, such as /use/index, /use/login, etc., and fix the use, so that only one needs to be written in app.js.