1. npm安裝

npm install js-file-download

2.引用

import fileDownload from 'js-file-download';

3.使用

//download.js
import request from '@/utils/request-authority'
export function download(query) { 
    return request({
      url: 'xxx.do',
      method: 'get',
      params: query,
      'responseType': 'blob'
    })
}

// download.vue
let filName = 'xxx文件'
 download().then(response => {
      fileDownload(response, fileName + '.xlsx')
});