最近开发了一个小的页面，单图和多图上传。node+express搭建本地服务器，采用Jquery编写传统的逻辑代码。
核心代码：
app.js
var fs = require('fs')
var multer = require('multer')
var express = require('express')
var path = require('path')
var router = express.Router()
let storage = multer.diskStorage({
destination: function(req, file, cb) {
// 文件初始路径
const date = new Date();
const toPad2 = num => num.padStart(2, '0');
const filePath = `./public/uploadimg/${date.getFullYear()}${toPad2(`${date.getMonth() + 1}`)}${toPad2(
`${date.getDate()}`)}_images`;
if (!fs.existsSync(filePath)) {
fs.mkdir(filePath, err => {
if (err) {
console.log(err)
} else {
cb(null, filePath)
}
})
} else {
cb(null, filePath)
}
},
filename: function(req, file, cb) {
var ext = path.extname(file.originalname)
// UUID 处理
function guid() {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(
c
) {
var r = (Math.random() * 16) | 0,
v = c == 'x' ? r : (r & 0x3) | 0x8
return v.toString(16)
})
}
cb(null, file.fieldname + guid() + Date.now() + ext)
}
})
var upload = multer({ storage: storage })
//单文件上传
router.post('/upload1', upload.single('file'), function(req, res, next) {
const date = new Date();
const toPad2 = num => num.padStart(2, '0');
const imgDir = `${date.getFullYear()}${toPad2(`${date.getMonth() + 1}`)}${toPad2(
`${date.getDate()}`)}_images/`;
res.json({
code: 200,
filePath:
'http://' +
req.headers.host +
'/uploadimg/' + imgDir +
path.basename(req.file.path)
})
})
//多文件上传
router.post("/upload2",upload.array("file",20),function(req,res,next){
const date = new Date();
const toPad2 = num => num.padStart(2, '0');
const imgDir = `${date.getFullYear()}${toPad2(`${date.getMonth() + 1}`)}${toPad2(
`${date.getDate()}`)}_images/`;
var filePath=[];
for(var i=0; i var tmpPath = 'http://' + req.headers.host + '/uploadimg/' + imgDir + path.basename(req.files[i].path); filePath.push(tmpPath); } res.json({ code:200, filePath:filePath }) }) //提交 router.post('/submmit', function(req, res) { console.log(req) var data={ "similarList":[ { "cutImgPath":"img/1.jpg", "picName":"ddd", "segNum":"", "similarValue":"80%" }, { "cutImgPath":"img/2.jpg", "picName":"ddd", "segNum":"", "similarValue":"60%" } ] } res.json({ code: 200, data: data }) }) module.exports = router html