演示效果
前端代碼
<template>
<div>
<div>
<p>
文件1:<input type="file" @change="fileSelect($event)" />
</p>
<p>
文件2:<input type="file" @change="fileSelect($event)" />
</p>
<p>
文件3:<input type="file" @change="fileSelect($event)" />
</p>
<button @click="fileSubmit">上傳</button>
</div>
<div class="progress-wrap">
<p>上傳進度</p>
<p class="progress"><span :style="style"></span></p>
</div>
</div>
</template>
<script>
export default {
data(){
return {
file: [],
progressBar: 0
}
},
computed:{
style(){
return {
width: this.progressBar+"%"
}
}
},
methods:{
fileSelect(e){
this.file.push(e.target.files[0])
},
async fileSubmit(){
const formData = new FormData();
this.file.map(f=>{
formData.append('file',f);
})
await this.$axios.post('http://localhost:3000/file/upload',formData,{
onUploadProgress: (progressEvent)=>{
var percentCompleted = Math.round( (progressEvent.loaded * 100) / progressEvent.total );
this.progressBar = percentCompleted
}}).then(res=>{
console.log(res.data)
})
}
}
}
</script>
<style>
.progress-wrap {
width: 300px;
}
.progress-wrap p {
width: 100%;
}
.progress {
background-color: #c5c8ce;
height: 20px;
}
.progress span {
display: block;
background-color: #19be6b;
height: 100%;
width: 0;
}
</style>
後端代碼
let express = require('express')
let router = express.Router()
let multer = require('multer')
let fs = require('fs');
let path = require('path');
let upload = multer({
storage: multer.diskStorage({
destination: function(req, file, cb) {
let date = new Date();
let year = date.getFullYear();
let month = (date.getMonth() + 1).toString().padStart(2, '0');
let day = date.getDate();
let dir = "./uploads/" + year + month + day;
if (!fs.existsSync(dir)) {
fs.mkdirSync(dir, {
recursive: true
});
}
cb(null, dir);
},
filename: function(req, file, cb) {
let fileName = file.fieldname + '-' + Date.now() + path.extname(file.originalname);
cb(null, fileName);
}
})
});
router.post('/upload', upload.array('file',3), (req, res) => {
res.json({
msg: "上傳成功"
})
})
module.exports = router