vue导出Excel格式 vue-json-excel file-saver xlsx

第一种 :vue-json-excel

npm 安装依赖包

 安装依赖包   npm install vue-json-excel

在main.js种引入:

import JsonExcel from 'vue-json-excel'
Vue.component('downloadExcel', JsonExcel)

在项目中使用:

<template>
  <div id="app">
    <download-excel class="export-excel-wrapper" :data="json_data" :fields="json_fields" name="点击下载">
    </download-excel>
  </div>
</template>
<script>
  export default {
    data() {
      return {
        json_fields: {
          "Complete name": "name", //常规字段
          Telephone: "phone.mobile", //支持嵌套属性
          "Telephone 2": {
            field: "phone.landline",
            //自定义回调函数
            callback: value => {
              return `Landline Phone - ${value}`;
            }
          }
        },
        json_data: [{
            name: "Tony Peña",
            city: "New York",
            country: "United States",
            birthdate: "1978-03-15",
            phone: {
              mobile: "1-541-754-3010",
              landline: "(541) 754-3010"
            }
          },
          {
            name: "Thessaloniki",
            city: "Athens",
            country: "Greece",
            birthdate: "1987-11-23",
            phone: {
              mobile: "+1 855 275 5071",
              landline: "(2741) 2621-244"
            }
          }
        ],
        json_meta: [
          [{
            " key ": " charset ",
            " value ": " utf- 8 "
          }]
        ]
      };
    }
  }
</script>

第二种: file-saver xlsx

第一步: 安装依赖包:

npm:安装依赖包:

npm install -S file-saver xlsx
npm install -D script-loader

yarn:安装依赖包:

yarn add file-saver
yarn add xlsx
yarn add script-loader --dev

第二部导入Blob.js 和Export2Excel.js两个文件,在src目录下创建excel文件,里面放入Blob.js 和Export2Excel.js两个文件,

在main.js 里面引入两个文件

import Blob from './excel/Blob'
import Export2Excel from './excel/Export2Excel.js'

在项目中:

<template>
  <div class="hello">
           <button class="tap"  @click="export2Excel">导出表格</button>
  </div>
</template>

<script>
export default {
 data () {
    return {
      tableData: [
        {'index':'999',"nickName": "的旧时光", "name": "98491231841251"},
        {'index':'1',"nickName": "高贵", "name": "张"},
        {'index':'2',"nickName": "海aaa灰尘", "name": "小兰"}
      ]
    }
  },
  methods: {
    export2Excel() {
      require.ensure([], () => {
        const { export_json_to_excel } = require('../excel/Export2Excel');
        const tHeader = ['序号', '昵称', '姓名'];  // 设置Excel的表格第一行的标题
        const filterVal = ['index', 'nickName', 'name'];  // index、nickName、name是tableData里对象的属性
        const list = this.tableData;  //把data里的tableData存到list
        const data = this.formatJson(filterVal, list);
        export_json_to_excel(tHeader, data, '导出文件名');  //导出Excel 文件名
      })
    },

    formatJson(filterVal, jsonData) {
      return jsonData.map(v => filterVal.map(j => v[j]));
    }
  }
}

注意： axios异步执行，要确保导出组件在之前已经拿到数据了。 vue-json-excel 使用:fetch = “fetchData” 下载，存在下载无反应的bug,因此推荐使用 第二种方式。

现获取数据，然后使用组件导出到Excel，否则可能会出现导出Excel无反应的情况。获取数据和下载操作如下：

            export2Excel() {
                this.$axios.get("/sys/dataUnit/list", {
                    params: {
                        status: 2,
                    }
                }).then(res => {
                    this.tableData = res.data.data.records;
                    console.log("this.tableData");
                    console.log(this.tableData);

                    require.ensure([], () => {
                        const { export_json_to_excel } = require('../excel/Export2Excel');
                        const tHeader = ['中文含义', 'xml tag', '数据类型','默认值'];  // 设置Excel的表格第一行的标题
                        const filterVal = ['chineseMessage', 'xmlTag', 'dataType','defaultValue'];  // index、nickName、name是tableData里对象的属性

                        const list = this.tableData;  //把data里的tableData存到list
                        console.log("list:");
                        console.log(list);
                        const data = this.formatJson(filterVal, this.tableData);
                        export_json_to_excel(tHeader, data, '导出文件名');  //导出Excel 文件名
                    })

                });
            },

三、实现Excel宽度自适应

Export2Execl.js文件内容如下，中间注释代码为宽度自适应代码，如有需要解除注释方可:

/* eslint-disable */
// require('script-loader!file-saver');
// require('script-loader!@/vendor/Blob');
require('script-loader!file-saver');
require('./Blob');
require('script-loader!xlsx/dist/xlsx.core.min');
import XLSX from 'xlsx'
 
function generateArray(table) {
    var out = [];
    var rows = table.querySelectorAll('tr');
    var ranges = [];
    for (var R = 0; R < rows.length; ++R) {
        var outRow = [];
        var row = rows[R];
        var columns = row.querySelectorAll('td');
        for (var C = 0; C < columns.length; ++C) {
            var cell = columns[C];
            var colspan = cell.getAttribute('colspan');
            var rowspan = cell.getAttribute('rowspan');
            var cellValue = cell.innerText;
            if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;
 
            //Skip ranges
            ranges.forEach(function (range) {
                if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {
                    for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
                }
            });
 
            //Handle Row Span
            if (rowspan || colspan) {
                rowspan = rowspan || 1;
                colspan = colspan || 1;
                ranges.push({ s: { r: R, c: outRow.length }, e: { r: R + rowspan - 1, c: outRow.length + colspan - 1 } });
            }
            ;
 
            //Handle Value
            outRow.push(cellValue !== "" ? cellValue : null);
 
            //Handle Colspan
            if (colspan) for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
        }
        out.push(outRow);
    }
    return [out, ranges];
};
 
function datenum(v, date1904) {
    if (date1904) v += 1462;
    var epoch = Date.parse(v);
    return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
}
 
function sheet_from_array_of_arrays(data, opts) {
    var ws = {};
    var range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } };
    for (var R = 0; R != data.length; ++R) {
        for (var C = 0; C != data[R].length; ++C) {
            if (range.s.r > R) range.s.r = R;
            if (range.s.c > C) range.s.c = C;
            if (range.e.r < R) range.e.r = R;
            if (range.e.c < C) range.e.c = C;
            var cell = { v: data[R][C] };
            if (cell.v == null) continue;
            var cell_ref = XLSX.utils.encode_cell({ c: C, r: R });
 
            if (typeof cell.v === 'number') cell.t = 'n';
            else if (typeof cell.v === 'boolean') cell.t = 'b';
            else if (cell.v instanceof Date) {
                cell.t = 'n';
                cell.z = XLSX.SSF._table[14];
                cell.v = datenum(cell.v);
            }
            else cell.t = 's';
 
            ws[cell_ref] = cell;
        }
    }
    if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
    return ws;
}
 
function Workbook() {
    if (!(this instanceof Workbook)) return new Workbook();
    this.SheetNames = [];
    this.Sheets = {};
}
 
function s2ab(s) {
    var buf = new ArrayBuffer(s.length);
    var view = new Uint8Array(buf);
    for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
    return buf;
}
 
export function export_table_to_excel(id) {
    var theTable = document.getElementById(id);
    var oo = generateArray(theTable);
    var ranges = oo[1];
 
    /* original data */
    var data = oo[0];
    var ws_name = "SheetJS";
 
    var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);
 
    /* add ranges to worksheet */
    // ws['!cols'] = ['apple', 'banan'];
    ws['!merges'] = ranges;
 
    /* add worksheet to workbook */
    wb.SheetNames.push(ws_name);
    wb.Sheets[ws_name] = ws;
 
    var wbout = XLSX.write(wb, { bookType: 'xlsx', bookSST: false, type: 'binary' });
 
    saveAs(new Blob([s2ab(wbout)], { type: "application/octet-stream" }), "test.xlsx")
}
 
export function export_json_to_excel(th, jsonData, defaultTitle) {
 
    /* original data */
 
    var data = jsonData;
    data.unshift(th);
    var ws_name = "SheetJS";
 
    var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);
 
    // /*设置worksheet每列的最大宽度*/
    // const colWidth = data.map(row => row.map(val => {
    //     /*先判断是否为null/undefined*/
    //     if (val == null) {
    //         return { 'wch': 10 };
    //     }
    //     /*再判断是否为中文*/
    //     else if (val.toString().charCodeAt(0) > 255) {
    //         return { 'wch': val.toString().length * 2 };
    //     } else {
    //         return { 'wch': val.toString().length };
    //     }
    // }))
    // /*以第一行为初始值*/
    // let result = colWidth[0];
    // for (let i = 1; i < colWidth.length; i++) {
    //     for (let j = 0; j < colWidth[i].length; j++) {
    //         if (result[j]['wch'] < colWidth[i][j]['wch']) {
    //             result[j]['wch'] = colWidth[i][j]['wch'];
    //         }
    //     }
    // }
    // ws['!cols'] = result;
 
    /* add worksheet to workbook */
    wb.SheetNames.push(ws_name);
    wb.Sheets[ws_name] = ws;
 
    var wbout = XLSX.write(wb, { bookType: 'xlsx', bookSST: false, type: 'binary' });
    var title = defaultTitle || 'excel-list'
    saveAs(new Blob([s2ab(wbout)], { type: "application/octet-stream" }), title + ".xlsx")
}

参考：

https://blog.csdn.net/qq_21013249/article/details/121094224

https://zhuanlan.zhihu.com/p/66069444

https://blog.csdn.net/tao20010624/article/details/121399826