第一步:安装三个依赖包
npm install --save xlsx
npm install --save file-saver
npm install --save-dev script-loader
前两个是插件依赖,最后一个是webpack打包报错的解决方案
第二步:写入导出的工具函数
在vue-cli项目下的src文件夹下新建vendor文件夹,里面写入的Export2Excel.js文件,内容
/* eslint-disable */
require('script-loader!file-saver');
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({
multiHeader = [],
header,
data,
filename,
merges = [],
autoWidth = true,
bookType= 'xlsx'
} = {}) {
/* original data */
filename = filename || 'excel-list'
data = [...data]
data.unshift(header);
for (let i = multiHeader.length-1; i > -1; i--) {
data.unshift(multiHeader[i])
}
var ws_name = "SheetJS";
var wb = new Workbook(),
ws = sheet_from_array_of_arrays(data);
if (merges.length > 0) {
if (!ws['!merges']) ws['!merges'] = [];
merges.forEach(item => {
ws['!merges'].push(XLSX.utils.decode_range(item))
})
}
if (autoWidth) {
/*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: bookType,
bookSST: false,
type: 'binary'
});
saveAs(new Blob([s2ab(wbout)], {
type: "application/octet-stream"
}), `${filename}.${bookType}`);
}
第三步:在需要使用导出的页面组件中调用。
示例如下:
<template>
<div class="table-to-excel">
<h3 class="uuid">表格转换Excel</h3>
<el-button class="button" @click="handleDownToExcel">导出Excel</el-button>
<el-table :data="tableData" border style="width: 100%">
<el-table-column prop="date" label="日期" width="180"></el-table-column>
<el-table-column prop="name" label="姓名" width="180"></el-table-column>
<el-table-column prop="address" label="地址"></el-table-column>
</el-table>
</div>
</template>
<script>
export default {
data() {
return {
tableData: [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀区金沙江路 1518 弄'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普陀区金沙江路 1517 弄'
},
{
date: '2016-05-01',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄'
},
{
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄'
}
]
}
},
created() {},
methods: {
handleDownToExcel() {
import('@/vendor/Export2Excel').then(excel => {
const tHeader = ['日期', '姓名', '地址'] // 表头
const filterVal = ['date', 'name', 'address'] // 与表头对应的字段
const list = this.tableData
const data = this.formatJson(filterVal, list)
excel.export_json_to_excel({
header: tHeader,
data,
filename: '测试表格Excel' // 导出Excel的名字
})
})
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
}
}
}
</script>
<style lang="scss" scoped>
.table-to-excel {
padding: 20px;
}
</style>
导出的其他配置,查看工具函数内的参数配置项。
关于导出多级表头和树形数据表格的处理示例:
<template>
<div class="table-to-excel">
<h3 class="uuid">表格转换Excel</h3>
<el-button class="button" @click="handleDownToExcel">导出Excel</el-button>
<el-table :data="tableData" border style="width: 100%">
<el-table-column prop="date" label="日期" width="180"></el-table-column>
<el-table-column prop="name" label="姓名" width="180"></el-table-column>
<el-table-column prop="address" label="地址"></el-table-column>
</el-table>
<el-button class="button" @click="handleDownToExcel1">导出Excel</el-button>
<el-table
:data="tableData1"
:span-method="objectSpanMethod"
border
style="width: 100%; margin-top: 20px">
<el-table-column
prop="id"
label="ID"
width="180">
</el-table-column>
<el-table-column
prop="name"
label="姓名">
</el-table-column>
<el-table-column
prop="amount1"
label="数值 1(元)">
</el-table-column>
<el-table-column
prop="amount2"
label="数值 2(元)">
</el-table-column>
<el-table-column
prop="amount3"
label="数值 3(元)">
</el-table-column>
</el-table>
<el-button class="button" @click="handleDownToExcel2">导出Excel</el-button>
<el-table
:data="tableData2"
style="width: 100%;margin-bottom: 20px;"
row-key="id"
border
default-expand-all
:tree-props="{children: 'tree_children', hasChildren: 'hasChildren'}">
<el-table-column
prop="date"
label="日期"
sortable
width="180">
</el-table-column>
<el-table-column
prop="name"
label="姓名"
sortable
width="180">
</el-table-column>
<el-table-column
prop="address"
label="地址">
</el-table-column>
</el-table>
</div>
</template>
<script>
export default {
data() {
return {
tableData: [
{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀区金沙江路 1518 弄'
},
{
date: '2016-05-04',
name: '王小虎',
address: '上海市普陀区金沙江路 1517 弄'
},
{
date: '2016-05-01',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄'
},
{
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄'
}
],
tableData1: [{
id: '12987122',
name: '王小虎',
amount1: '234',
amount2: '3.2',
amount3: 10
}, {
id: '12987123',
name: '王小虎',
amount1: '165',
amount2: '4.43',
amount3: 12
}, {
id: '12987124',
name: '王小虎',
amount1: '324',
amount2: '1.9',
amount3: 9
}, {
id: '12987125',
name: '王小虎',
amount1: '621',
amount2: '2.2',
amount3: 17
}, {
id: '12987126',
name: '王小虎',
amount1: '539',
amount2: '4.1',
amount3: 15
}],
tableData2: [
{
id: 1,
date: '2016-05',
name: '',
address: '',
tree_children: [{
id: 11,
date: '2016-05-01',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄'
}, {
id: 12,
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄'
}]
},
{
id: 2,
date: '2016-06',
name: '',
address: '',
tree_children: [{
id: 21,
date: '2016-06-01',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄'
}, {
id: 22,
date: '2016-06-02',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄'
}]
},
{
id: 3,
date: '2016-07',
name: '',
address: ''
}
]
}
},
created() {},
methods: {
handleDownToExcel() {
import('@/vendor/Export2Excel').then(excel => {
const tHeader = ['日期', '姓名', '地址'] // 表头
const filterVal = ['date', 'name', 'address'] // 表头对应的字段
const list = this.tableData
const data = this.formatJson(filterVal, list)
excel.export_json_to_excel({
header: tHeader,
data,
filename: '测试表格Excel' // 导出excel名称
})
})
},
handleDownToExcel1() {
import('@/vendor/Export2Excel').then(excel => {
const tHeader = ['ID', '姓名', '数值1','数值2','数值3'] // 表头
const filterVal = ['id', 'name', 'amount1','amount2','amount3'] // 表头对应的字段
const list = this.tableData1
const data = this.formatJson(filterVal, list)
const merges = ['A2:A3', 'A4:A5']
excel.export_json_to_excel({
header: tHeader,
data,
merges,
filename: '测试表格Excel1' // 导出excel名称
})
})
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
},
handleDownToExcel2() {
import('@/vendor/Export2Excel').then(excel => {
const tHeader = ['日期', '姓名', '地址'] // 表头
const filterVal = ['date', 'name', 'address'] // 表头对应的字段
const list = this.tableData2
const data = this.formatJson2(filterVal, list)
excel.export_json_to_excel({
header: tHeader,
data,
filename: '测试表格Excel2' // 导出excel名称
})
})
},
formatJson2(filterVal, jsonData) {
let tempArr = []
jsonData.forEach(v => {
tempArr.push(this.formatFun(v, filterVal))
if(v.tree_children) {
v.tree_children.forEach(i => {
tempArr.push(this.formatFun(i, filterVal))
})
}
});
// console.log(tempArr)
return tempArr
},
formatFun(v,filterVal) {
// console.log(filterVal.map(j => v[j]))
return filterVal.map(j => v[j])
},
objectSpanMethod({ row, column, rowIndex, columnIndex }) {
if (columnIndex === 0) {
if (rowIndex % 2 === 0) {
return {
rowspan: 2,
colspan: 1
};
} else {
return {
rowspan: 0,
colspan: 0
};
}
}
}
}
}
</script>
<style lang="scss" scoped>
.table-to-excel {
padding: 20px;
}
</style>