<el-upload

              class="upload-demo"

              ref="vidos"

              :action="URL+'/api/post/file'"

              :data="date"

              :on-success="handleAvatarAUDIO"

              :before-upload="beforeAvatarAUDIO"

              :on-progress="beforeAvatarUpload"

              accept=".mp4"

              :on-change="AvatarAUDIO" //将用到次方法

              :file-list="fileList"

            >

   AvatarAUDIO(file, fileList){

      // 此方法如果是大文件时会出现偶尔卡顿

      let reader = new FileReader()

      reader.readAsDataURL(file.raw)

      reader.onload=()=>{

          console.log(reader.result,'地址')

          this.AUDIO = reader.result

      }

      // 第二种方法

      let URL = window.URL || window.webkitURL;

      this.AUDIO = URL.createObjectURL(file.raw);

    },