vuevantUI实现⽂件（图⽚、⽂档、视频、⾳频）上传（多⽂件）
说在前⾯
⽹上有很多种⽂件上传的⽅法，根据公司最近的业务需求，要求实现多种⽂件的上传，在实现过程中，查阅了很多资料，最后，终于把功能实现了，开⼼！
<template>
<div>
<v-header :left-text="`上传${columnName}`"></v-header>
<div class="upload">
<div v-if="columnName === '视频'">
<div class="forPreview_video" v-for="(item, index) in uploadVideoList" :key="index">
<video :src="videoSrc"></video>
<van-icon name="delete" @click="delBtn(index)" class="delte"/>
</div>
<van-uploader v-show="uploadVideoList.length < 2" preview-size="80px" accept="video/*" :before-read="beforeRead" :after-read="afterRead"></van-uploader>
</div>
<div v-if="columnName === '⽂档'">
<div class="forPreview_doc" v-for="(item, index) in uploadDocList" :key="index">
<img src="../../assets/img/resource_doc_b@2x.png" alt="">
<span>{{item.name}}</span>
<span>{{item.size | formatSize}}</span>
<van-icon name="delete" @click="delBtn(index)" class="delte"/>
</div>
<van-uploader v-show="uploadDocList.length < 2" preview-size="80px" accept=".doc, .docx, .xml, .xlsx, .pdf" :before-read="beforeRead" :after-read="afterRead"></van-uploader>      </div>
<div v-if="columnName === '⾳频'">
<div class="forPreview_audio" v-for="(item, index) in uploadAudioList" :key="index">
<img src="../../assets/img/resource_audio@2x.png" alt="">
<span>{{item.name}}</span>
<span>{{item.size | formatSize}}</span>
<van-icon name="delete" @click="delBtn(index)" class="delte"/>
</div>
<van-uploader v-show="uploadAudioList.length < 2" preview-size="80px" accept="audio/*" :before-read="beforeRead" :after-read="afterRead"></van-uploader>
</div>
<div v-if="columnName === '图⽚'">
<div class="forPreview_pic" v-for="(item, index) in uploadPicList" :key="index">
<img :src="picSrc" alt="">
<van-icon name="delete" @click="delBtn(index)" class="delte"/>
</div>
<van-uploader v-show="uploadPicList.length < 2" accept="image/*" preview-size="80px" :before-read="beforeRead" :after-read="afterRead"></van-uploader>
</div>
<div class="diy-submit">
<van-button @click="doSubmit($event)">提交</van-button>
</div>
</div>
</div>
</template>
上述html代码是在同⼀页⾯根据前⼀页⾯传回的columnName的值来判断需要上传哪种类型⽂件。
<script>
import VHeader from '../../common/header'
import {classifyList, uploadFile, addResources} from '../../http/mock'
import Toast from 'vant'
export default {
name: "uploadFile",
components: {
VHeader
},
data(){
return{
tagList: [],
uploadTitle: '',
currentTag: null,
tagId: null,
columnName: Item('columnName'),
fileIdArr: [],
uploadVideoList: [], // 选中的上传视频列表
videoSrc: '',  // 选中的视频的src，⽤来显⽰视频
uploadDocList: [], // 选中的上传⽂档列表
uploadAudioList: [], // 选中的上传⾳频列表
uploadPicList: [], // 选中的上传图⽚列表
picSrc: '', // 选中的图⽚的src，⽤来显⽰图⽚缩略图
}
},
filters: {
formatSize(val) { // 格式化⽂件⼤⼩
if (val > 0) {
return (val / 1024 / 1024).toFixed(2) + 'M';
} else {
return '0M';
}
},
},
methods: {
// vant上传⽂件前校验⽂件事件
// ⽂件选中后先提交给后台，后台根据选中的⽂件，返回数组（这⼀业务根据后台⽽定）
beforeRead(file){
let formData = new FormData(); // 为上传⽂件定义⼀个formData对象
let config = {
headers: {
'Content-Type': 'multipart/form-data'
}
};
let uploadUrl = ateObjectURL(file); // 将选中的上传⽂件转化为⼆进制⽂件，显⽰在页⾯上        lumnName === '视频'){
this.uploadVideoList.push(file);
this.videoSrc = uploadUrl;
// 这⾥使⽤foreach是为了将选中的多个⽂件都添加进定义的formdata变量中
this.uploadVideoList.forEach(item => {
formData.append(item.name, item)
})
}else lumnName === '⽂档'){
this.uploadDocList.push(file);
this.uploadDocList.forEach(item => {
formData.append(item.name, item)
})
}else lumnName === '⾳频'){
this.uploadAudioList.push(file);
this.uploadAudioList.forEach(item => {
formData.append(item.name, item)
})
}else lumnName === '图⽚'){
this.uploadPicList.push(file);
this.picSrc = uploadUrl;
this.uploadPicList.forEach(item => {
formData.append(item.name, item)
})
}
// formData.append(file.name, file); // 单个⽂件上传时可以这么写，上⾯的foreach就可以删掉
this.$api.post(uploadFile, formData, config).then(res => {
this.fileIdArr = res.data.data;  // 把選中的⽂件傳送給後台
}).catch(err => {
Toast('⽂件上傳失敗！')
})
},
// 删除待上传的⽂件
delBtn(index){
lumnName === '视频'){
// 先判断当前的选中的索引是否是在有效范围中，如果不是则跳出⽅法
if(isNaN(index) || index >= this.uploadVideoList.length){
return false;
}
let tmp = [];
// 将没被选中的上传⽂件存放进⼀个临时数组中
for(let i = 0; i < this.uploadVideoList.length; i++){
if(this.uploadVideoList[i] !== this.uploadVideoList[index]){
tmp.push(this.uploadVideoList[i]);
}
}
// 存放当前未被选中的上传⽂件
this.uploadVideoList = tmp;
}
lumnName === '⽂档'){
console.log(this.uploadDocList.length)
if(isNaN(index) || index >= this.uploadDocList.length){
return false;
}
let tmp = [];
for(let i = 0; i < this.uploadDocList.length; i++){
if(this.uploadDocList[i] !== this.uploadDocList[index]){
tmp.push(this.uploadDocList[i]);
}
}
this.uploadDocList = tmp;
}
lumnName === '⾳频'){
if(isNaN(index) || index >= this.uploadAudioList.length){
return false;
}
let tmp = [];
for(let i = 0; i < this.uploadAudioList.length; i++){
if(this.uploadAudioList[i] !== this.uploadAudioList[index]){
tmp.push(this.uploadAudioList[i]);
}
}
this.uploadAudioList = tmp;
}
lumnName === '图⽚'){
if(isNaN(index) || index >= this.uploadPicList.length){
return false;
}
console.log('uuu')
let tmp = [];
for(let i = 0; i < this.uploadPicList.length; i++){
if(this.uploadPicList[i] !== this.uploadPicList[index]){
tmp.push(this.uploadPicList[i]);
}
}
this.uploadPicList = tmp;
}
},
doSubmit(){
vue json字符串转数组let params = {
classify: this.tagId,    // 针对视频资源时对应的分类id
file: this.fileIdArr,  // 选择完⽂件后，调⽤uploadFile这个接⼝，后端返回的数组
resourceColumnId: JSON.Item('columnId')),  // 资源栏⽬id(视频、图⽚、⾳频、⽂档)          title: this.uploadTitle  // 上传时填写的标题
};
let columnName = Item('columnName')
this.$api.post(addResources, params).then(res => {
if(de === 1001){
if(columnName === '视频'){
this.$router.push({name: 'myVideo'});
}else {
this.$router.push({name: 'myResourceClassify'});
}
}
}).catch(err => {
console.log(err)
})
},
},
mounted(){
}
}
</script>
<style lang="less" scoped>
.upload{
padding: 140px 36px 160px 36px;
box-sizing: border-box;
}
.forPreview_video{
position: relative;
/*background: rgba(0,0,0,.7);*/
video{
width: 95%;
max-height: 430px;
}
.delte{
position: absolute;
right: 0;
bottom: 0;
}
}
.forPreview_doc, .forPreview_audio{
display: flex;
margin-bottom: 10px;
align-items: center;
img{
width: 56px;
height: 56px;
margin-right: 20px;
}
span:nth-of-type(1){
flex: 1;
}
span:nth-of-type(2){
margin-right: 20px;
}
}
.forPreview_pic{
display: flex;
align-items: flex-end;
img{
width: 160px;
height: 160px;
}
}
.diy-detail{
width: 100%;
overflow: hidden;
.btn{
span{
margin-bottom: 10px;
}
}
.
van-cell{
background-color: #F0F0F0;
border-radius: 35px;
font-size: 26px;
height: 69px;
line-height: 69px;
padding: 0 22px;
color: #999;
}
.van-hairline--top-bottom::after, .van-hairline-unset--top-bottom::after {
border-width: 0;
}
p{
height: 64px;
line-height: 64px;
font-size: 32px;
color: #333;
position: relative;
padding-left: 16px;
}
p::before{
position: absolute;
top: 0;
left: 0;
content: '*';
color: #FF0000;
}
span{
display: inline-block;
width: 157px;
background: #F0F0F0;
border-radius: 35px;
color: #999;
font-size: 26px;
padding: 14px 18px;
margin-right: 28px;
text-align: center;
}
.active{
color: #fff;
background: linear-gradient(to right,#FD5130,#FA6C34);
}
}
.diy-submit {
position: fixed;
height: 150px;
width: 90%;
bottom: 0;
background: #fff;
.van-button {
width: 100%;
height: 90px;
border-radius: 45px;
font-size: 36px;
color: #fff;
background: linear-gradient(to right, #FD5130, #FA6C34);
top: 50%;
transform: translate(0, -50%);
}
.van-button--default {
border: none;
}
}
</style>
以上就是本⽂的全部内容，希望对⼤家的学习有所帮助，也希望⼤家多多⽀持。

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