[JavaScript知识库]vue2+element-ui+axios上传文件

vue2项目中 加入 element-ui, axios

npm install element-ui -S --registry=https://registry.npm.taobao.org 
npm install axios -S --registry=https://registry.npm.taobao.org 

main.js 导入

import Element from 'element-ui'
import axios from 'axios'

新增模版

<template>
<el-upload
  class="upload-demo"
  action="#"
  :http-request="handleChange"
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  :before-remove="beforeRemove"
  :on-exceed="handleExceed"
  :file-list="fileList">
  <el-button size="small" type="primary">点击上传</el-button>
  <div slot="tip" class="el-upload__tip">只能上传zip文件，且不超过100M</div>
</el-upload>
</template>
<script>
import axios from 'axios'
  export default {
    data() {
      return {
        fileList: []
      };
    },
    methods: {
      handleRemove(file, fileList) {
        console.log(file, fileList);
      },
      handlePreview(file) {
        console.log(file);
      },
      handleExceed(files, fileList) {
        this.$message.warning(`当前限制选择 3 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`);
      },
      beforeRemove(file, fileList) {
        return this.$confirm(`确定移除 ${ file.name }？`);
      },
      handleChange(param) {
        const data = new FormData();
        data.append('file', param.file);
        axios.post(process.env（自己的host配置） + '/upload_file', data, {
          headers: {
            'Content-Type': 'multipart/form-data',
          },
        }).then(res => {
          console.log(res);
        }).catch(err => {
          console.log(err);
        });
      }
    }
  }
</script>