vue实现excel数据下载,后端提供的list由前端转excel并下载

前言,因为项目需求需要,我们需要把后端传来的list转成excel模板,并且下载下来)

之前有用的插件,但是会有少0的情况,如下

所以采用另一个项目用过的方法,最终完美实现效果,如下:

1,首先我们来看下后端提供的数据结构

2,具体前端代码如下

封装的组件,需要的同学直接copy就行(这个方法是在 src - mixins -crud.js文件上写的)

javascript 复制代码

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;

      }
    },
  }
}

举例使用:

html

html 复制代码

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

现在引入

javascript 复制代码

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

在方法里

javascript 复制代码

  //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,已完