daya-mall-admin/src/utils/downLoadFile.js

import axios from 'axios'
import qs from 'qs'
import {
  getToken
} from '@/utils/auth'
// import load from '@/utils/loading'
import cleanDeep from 'clean-deep'

/**
 * 导出模板
 * @param {*} params
 * params: {
 *      url: xxx,
 *      params: {},
 *      fileName: xxx.xls
 * }
 */
export const Export = (that, params, message, func) => {
  // 报表导出
  let url = params.url
  const options = {
    method: params.method ? params.method : 'get',
    headers: {
      Authorization: getToken()
    },
    // params: params.params,
    url,
    responseType: "blob"
  };
  if (options.method == 'post') {
    options.data = params.params
  } else {
    options.params = params.params
  }
  that.$confirm((message || "您确定下载模板"), "提示", {
      confirmButtonText: "确定",
      cancelButtonText: "取消",
      type: "warning"
    })
    .then(() => {
      // load.startLoading()
      axios(cleanDeep(options)).then(res => {
        let blob = new Blob([res.data], {
          // type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8'
          type: "application/vnd.ms-excel;charset=utf-8"
          //word文档为application/msword,pdf文档为application/pdf,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8
        });
        let text = (new Response(blob)).text()
        text.then(res => {
          // 判断是否报错
          if (res.indexOf('code') != -1) {
            let json = JSON.parse(res)
            if (json.code == 403) {
              that.$message.error(`登录过期，请重新登录！`)
              setTimeout(() => {
                that.$store.dispatch('user/resetToken').then(() => {
                  location.reload()
                })
              }, 1000);
              return
            } else if(json.code == 200){
              that.$message.success(json.msg || json.message)
            } else {
              that.$message.error(json.msg || json.message)
            }
            if (func) {
              func()
            }
          } else {
            let objectUrl = URL.createObjectURL(blob);
            let link = document.createElement("a");
            let fname = params.fileName || "导出文件.xls"; //下载文件的名字
            link.href = objectUrl;
            link.setAttribute("download", fname);
            document.body.appendChild(link);
            link.click();

            if (func) {
              func()
            }

          }
        })

        // load.endLoading();
      }).catch(error => {
        console.log(error)
        that.$message.error('下载失败，请联系管理员');
        // load.endLoading();
      });
    })
    .catch(() => {});
}