element-ui多文件上传的实现示例

  
   选取文件
   
仅支持上传mp3文件，文件大小不超过500M
  
  上传到服务器

 

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'
     })
    })
   },
  }
 }

  
   选取文件
   上传到服务器
   
只能上传mp3文件，且单次不超过500M
  


export default {
  name: 'uploadMusic',
  data() {
   return {
    fileType:'video',
    fileData: new FormData(),
    headers:{},
   }
  },