布局（在Element复制）：

<template>
 <div class="hello">
    <el-upload class="avatar-uploader"
             action="http://api.baxiaobu.com/index.php/home/v1/upload"
             name="upfile"
             :show-file-list="false"
             :on-success="handleAvatarSuccess"
             :before-upload="beforeAvatarUpload">
    <img v-if="imageUrl" :src="imageUrl" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon"></i>
  </el-upload>
  <img :src="avatar"  style="width: 100px;height: 100px;"/>
</div>
</template>

js:

  <script>
  import axios from "axios";
  import cookies from 'js-cookie';
  import qs from 'qs';

export default {
  data() {
    return {
      imageUrl: '',
      avatar: "",
    };
  },
  methods: {
     handleAvatarSuccess(res, file) {
     this.imageUrl = URL.createObjectURL(file.raw);
     console.log(this.imageUrl)
     this.upimg(res.pic_url)
      },
  beforeAvatarUpload(file) {

  },
  getimg() {
    var url = "http://api.baxiaobu.com/index.php/home/v1/getUserInfo"

    var params = {
      user_id: cookies.get('token')
    }
    params = qs.stringify(params)     /*获取到字符串类型的token*/

    axios.post(url, params).then((res) => {
      this.avatar = res.data.userInfo.avatar
    })
  },
  upimg(avatars) {
    var url = "http://api.baxiaobu.com/index.php/home/v1/updateAvatar"

    var params = {
      user_id: cookies.get('token'),
      avatar: avatars
    }

    params = qs.stringify(params)
    console.log(params)
    axios.post(url, params).then((res) => {
      this.getimg()
    })
  }
},
created() {
  this.getimg()
}
}
</script>

css样式（在Element复制）：

<style scoped>
  .hello {
    width: 100%;
    float: left;
    height: 900px;
    background: white;
}

.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.avatar-uploader .el-upload:hover {
  border-color: #409EFF;
}

.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}

.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
 </style>