expressはmultierと結合してファイルアップロード機能を実現します.

      ：


      ：


      ：<br/><br/>
    <input type="submit" value="  "/>
</form></code></pre> 
 <pre><code>// nav.js   
const express = require('express')
const tools = require('../../model/tools')

router.post('/doAdd', tools.multer().single('pic'), (req, res) => {
    //           
    res.send({
        body: req.body,
        file: req.file
    })
})</code></pre> 
 <pre><code>// tools.js  
const multer = require('multer')
const path = require('path')
const sd = require('silly-datetime')
const mkdirp = require('mkdirp')

let tools = {
    /*        */
    multer() {
        var storage = multer.diskStorage({
            //        
            destination: async (req, file, cb) => {
                // 1.        20200703
                let day = sd.format(new Date(), 'YYYYMMDD')
                // static/upload/20200703
                let dir = path.join('static/upload', day)

                // 2.             
                await mkdirp(dir)  // mkdirp       

                cb(null, dir)
            },
            //          
            filename: function (req, file, cb) {
                //           
                let extname = path.extname(file.originalname)
                cb(null, Date.now() + extname)
            }
        })
        var upload = multer({ storage: storage })
        return upload
    },
    md5() { }
}

module.exports = tools</code></pre> 
 <p>     ：</p> 
 <pre><code>// user.js     
const express = require('express')
const tools = require('../../model/tools')

var router = express.Router()

router.get('/', (req, res) => {
    res.send('    ')
})
router.get('/add', (req, res) => {
    res.render('admin/user/add')
})

//      
let cpUpload = tools.multer().fields([{ name: 'pic1', maxCount: 1 }, { name: 'pic2', maxCount: 1 }])

router.post('/doAdd', cpUpload, (req, res) => {
    res.send({
        body: req.body,
        files: req.files
    })
})

module.exports = router</code></pre> 
</article>
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                        </div>