Vue implements excel data download, and the list provided by the back end is transferred from the front end to excel and downloaded

Foreword, because of project requirements, we need to convert the list from the backend into an excel template and download it)

The plug-ins that were useful before, but there will be less than 0, as follows

 So using the method used in another project, the final perfect effect is achieved, as follows:

 1, first let's look at the data structure provided by the backend

2, the specific front-end code is as follows

For the packaged components, students who need them can just copy them directly (this method is written on the src-mixins-crud.js file)

import * as XLSX from 'xlsx'; //直接引入就行


 /**
     * 导出Excel
     * @param json   要导出的json数据
     * @param name   要导出的文件名
     * @param type   要导出的数据类型
     * @constructor
     */
    mixinExportJosnToExcel(json, name = 'data', type = 'application/octet-stream') {
      let wb = { SheetNames: [], Sheets: {}, Props: { }};
      if (!Array.isArray (json)) {
        // eslint-disable-next-line no-param-reassign
        json = [json];
      }
      json.forEach (item => {
        wb.SheetNames.push (item.sheetName);
        wb.Sheets[item.sheetName] = XLSX.utils.json_to_sheet (item.sheetValues, item.sheetOptions);
      });
      const wopts = { bookType: 'xlsx', bookSST: false, type: 'binary' };

      // eslint-disable-next-line no-use-before-define
      let blob = new Blob ([s2ab (XLSX.write (wb, wopts))], { type });

      let link = document.createElement ('a');

      document.body.appendChild (link);
      link.style.display = 'none';
      link.href = window.URL.createObjectURL (blob);
      link.download = `${name}.xlsx`;
      link.click ();
      // 释放资源
      setTimeout (() => {
        URL.revokeObjectURL (link.href);
      }, 100);

      function s2ab(s) {
        if (typeof ArrayBuffer !== 'undefined') {
          const buf = new ArrayBuffer (s.length);
          const view = new Uint8Array (buf);

          for (let i = 0; i !== s.length; ++i) {
            view[i] = s.charCodeAt (i) & 0xFF;
          }
          return buf;
        }
        const buf = new Array (s.length);

        for (let i = 0; i !== s.length; ++i) {
          buf[i] = s.charCodeAt (i) & 0xFF;
        }
        return buf;

      }
    },
  }
}

Example use:

html

<div class="prompt_three"@click="downloadList()">下载失败结果</div>

import now

<script>
    import crud from "@/mixins/crud";
    export default {
     mixins: [crud],
     }
</script>

in the method

  //下载失败清单
    async downloadList() {
      try {   //这里的模板数据应是从上传之后的确定按钮拿到的
        let arr = []
        let telephone=''
        this.errorList.forEach(one=>{   //this.errorList就是拿到的后端list
            if(one.serviceConsultantList && one.serviceConsultantList.length>0){
              one.serviceConsultantList.forEach((two,index) => {
                console.log(index+1 , one.serviceConsultantList.length)
                telephone += `${two.telephone}${index+1 == one.serviceConsultantList.length ? '' : '、'}`
              })
            }else{
              telephone=''
            }
            arr.push({
              '酒店code': one.hotelId,
              '服务顾问姓名':one.nameList && one.nameList.length>0?one.nameList.join("、"):null,
              '服务顾问联系方式': telephone,
              '失败原因': one.errorReason,
            })
        })
        const json = {
          sheetName: '酒店导入失败明细',
          sheetValues: arr
        };
        this.mixinExportJosnToExcel (json,'批量导入员工失败清单');
      } catch (error) {
        console.log(error,"error")
      }
    },

 ok, finished