nodejs Ideas for uploading front-end and back-end pictures
. 3. Precautions 1. Data type formdata2. method post3. normal ajaxpost data format form json Specific code: server server.js const express = require('express')let app = express()const multer = require('multer')const fs = require ('fs')const path = require('path')//single is a single image upload, multi-image upload array, single is the key value of the uploaded image//The image is related to req.fileapp.use('/ public',express.static(path.join(__dirname,'./www')))
app.post('/aa',multer().single('img'),(req,res)=>{ let {buffer,mimetype} = req.file; let fileName = (new Date()).getTime () + parseInt(Math.random()*3435) + parseInt(Math.random()*6575); let fileType = mimetype.split('/')[1]; let filePath = path.join(__dirname,' /www/images') let apath = `http://localhost:5500/public/images/${fileName}.${fileType}` fs.writeFile(`./www/images/${fileName}.${ fileType}`,buffer,(data)=>{ if(data){ res.send({err:0,msg:"Upload failed"}) }else{ res.send({err:1,msg:"Upload Success",imgPath:apath}) } })})
app.listen('5500',()=>{ console.log('start')}) Front end:
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