先将文件上传到七牛，再将七牛上传返回的文件访问路径上传到服务器
<div> <el-upload ref="upload" action="http://up-z2.qiniup.com/" :data="{token:uploadToken}" multiple accept=".mp3" :before-upload="uploadBefore" :on-change="uploadChange" :on-success="uploadSuccess" :on-error="uploadError"> <el-button size="small" type="primary">选取文件</el-button> <div slot="tip">仅支持上传mp3文件，文件大小不超过500M</div> </el-upload> <el-button size="small" type="success" @click="submitUpload">上传到服务器</el-button> </div> export default { name: 'uploadMusic', data() { return { headers: {}, uploadToken: null, canUploadMore: true, fileList: null, } }, created() { this.headers = {} //此处需要与server约定具体的header this.getUploadToken() }, methods: { //获取上传七牛token凭证 getUploadToken() { this.$http.get('xxxxxxx', {headers: this.headers}).then(response => { if (response.data.status == 200) { let resp = response.data.data this.uploadToken = resp.token } else { this.$message({ message: '获取凭证失败，请重试', type: 'error' }) } }) }, //获取音频文件时长 getVideoPlayTime(file, fileList) { let self = this //获取录音时长 try { let url = URL.createObjectURL(file.raw); //经测试，发现audio也可获取视频的时长 let audioElement = new Audio(url); let duration; audioElement.addEventListener("loadedmetadata", function (_event) { duration = audioElement.duration; file.duration = duration self.fileList = fileList }); } catch (e) { console.log(e) } }, //校验上传文件大小 uploadChange(file, fileList) { this.fileList = fileList let totalSize = 0 for (let file of fileList) { totalSize += file.raw.size } if (totalSize > 500 * 1024 * 1024) { this.canUploadMore = false this.$message({ message: '上传文件不能不超过500M', type: 'warn' }) } else { this.canUploadMore = true } }, uploadBefore(file) { if (this.canUploadMore) { return true } return false }, //上传成功 uploadSuccess(response, file, fileList) { this.getVideoPlayTime(file, fileList) }, //上传失败 uploadError(err, file, fileList) { console.log(err) }, //上传服务器数据格式化 getUploadMusicList() { let musicList = [] for (let file of this.fileList) { if (file.response && file.response.key) { musicList.push({ "play_time": file.duration, //播放时长 "size": file.size/1024, //文件大小 单位 kb "song_name": file.name, //歌曲名 "voice_url": "xxxx" //上传七牛返回的访问路径 }) } } return musicList }, //上传至服务器 submitUpload() { let musicList = this.getUploadMusicList() this.$http.post('xxxxxxxxxx', {music_list: musicList}, {headers: this.headers}).then(response => { if (response.data.status == 200) { this.$refs.upload.clearFiles() //上传成功后清空文件列表 this.$message({ message: '上传服务器成功', type: 'success' }) } else{ this.$message({ message: '上传服务器失败，请重试', type: 'error' }) } }).catch(err => { this.$message({ message: '上传服务器失败，请重试', type: 'error' }) }) }, } }
上传方案二：
直接将文件上传到服务器
<div> <el-upload ref="upload" multiple action="" :auto-upload="false" :http-request="uploadFile"> <el-button slot="trigger" size="small" type="primary">选取文件</el-button> <el-button size="small" type="success" @click="submitUpload">上传到服务器</el-button> <div slot="tip">只能上传mp3文件，且单次不超过500M</div> </el-upload> </div> export default { name: 'uploadMusic', data() { return { fileType:'video', fileData: new FormData(), headers:{}, } },
补充：element-ui实现多文件加表单参数上传
element-ui是分图片多次上传，一次上传一个图片。
如果想一次上传多个图片，就得关掉自动上传：auto-upload=‘false'，同时不使用element内置上传函数，换成自己写的onsubmit()
为了实现图片的添加删除，可在on-change与on-remove事件中取得filelist（filelist实质就是uploadFiles的别名，而uploadFiles就是element内置的用于保存待上传文件或图片的数组），在最后一步提交的过程中，将filelist中的值一一添加到formdata对象中（formdata.append()添加，formdata.delete()删除），然后统一上传。
ps：on-preview事件和<el-dialog>组件以及对应属性、方法这一体系是用来实现图片的点击放大功能。被注释掉的beforeupload只有一个实参，是针对单一文件上传时使用到的，这里无法用上
<template> <div> <el-upload action="http://127.0.0.1:8000/api/UploadFile/" list-type="picture-card" :auto-upload="false" :on-change="OnChange" :on-remove="OnRemove" :on-preview="handlePictureCardPreview" :before-remove="beforeRemove" > <i></i> </el-upload> <el-dialog :visible.sync="dialogVisible"> <img :src="dialogImageUrl" alt=""> </el-dialog> <el-button type="" @click="fun">点击查看filelist</el-button> <el-button type="" @click="onSubmit">提交</el-button> </div> </template> <script> import {host,batchTagInfo} from '../../api/api' export default { data() { return { param: new FormData(), form:{}, count:0, fileList:[], dialogVisible:false, dialogImageUrl:'' }; }, methods: { handlePictureCardPreview(file) { this.dialogImageUrl = file.url; this.dialogVisible = true; }, beforeRemove(file, fileList) { return this.$confirm(`确定移除 ${ file.name }？`); }, OnChange(file,fileList){ this.fileList=fileList }, OnRemove(file,fileList){ this.fileList=fileList }, //阻止upload的自己上传，进行再操作 // beforeupload(file) { // console.log('-------------------------') // console.log(file); // //创建临时的路径来展示图片 // //重新写一个表单上传的方法 // this.param = new FormData(); // this.param.append('file[]', file, file.name); // this.form={ // a:1, // b:2, // c:3 // } // // this.param.append('file[]', file, file.name); // this.param.append('form',form) // return true; // }, fun(){ console.log('------------------------') console.log(this.fileList) }, onSubmit(){ this.form={ a:1, b:2, c:3 } let file='' for(let x in this.form){ this.param.append(x,this.form[x]) } for(let i=0;i<this.fileList.length;i++){ file='file'+this.count this.count++ this.param.append(file,this.fileList[i].raw) } batchTagInfo(this.param) .then(res=>{ alert(res) }) } } } </script> <style> </style>