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                # 常用內置中間件和第三方中間件 * 靜態文件服務中間件: 內置 * 日志中間件: morgan * 參數解析: body-parser * Cookie 解析: cookie-parser * 文件上傳解析: express-fileupload 注意:第三方的中間件,使用前得安裝對應的包。別人寫好中間件, 想給其他人用戶, 做一個包, 所有我們要使用的中間件, 先下載包, 再對應文件引入, 參考其提供文檔使用 app.use (上npm網站看文檔) ``` // 把上面 app.js 代碼構造一下 const morgan = require('morgan'); const express = require('express'); const app = express(); app.use(morgan('dev')); // 應用第三方日志中間件 app.get('/', (req, res) => { res.send('Hello World Get!'); }); app.post('/', (req, res) => { res.send('Hello World Post!'); }); app.listen(8888, () => { console.log('8888 Running...'); }); ```
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