一、需要依赖

npm install xlsx-style --save "^0.8.13"npm install xlsx --save "^0.18.5"npm i file-saver "^2.0.5"npm i script-loader "^0.7.2"

二、vue导入xlsx-style组件报错Can‘t resolve ‘./cptable‘ in ‘xxx\node_modules_xlsx

vue2x版本

就是在webpack.base.conf.js中加入下面这段

module.exports = {externals: {'./cptable': 'var cptable'}}

vue3x版本

在根目录下的vue.config.js(没有的话自己创建一个)

加入下面的代码

module.exports = {configureWebpack: {externals: {'./cptable': 'var cptable'}}}

三、excelOut.js

/* eslint-disable */require('script-loader!file-saver');import XLSX from 'xlsx-style'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 rangesranges.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 Spanif (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 ValueoutRow.push(cellValue !== "" ? cellValue : null);//Handle Colspanif (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({title,multiHeader = [],header,data,filename,merges = [],autoWidth = true,width,bookType = 'xlsx',myRowFont = ['1']} = {}) {/* original data */filename = filename || 'excel-list'data = [...data]//设置表头和标题data.unshift(header);data.unshift(title);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))})}//是否自动设置宽度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': 30};}/*再判断是否为中文*/else if (val.toString().charCodeAt(0) > 255) {return {'wch': val.toString().length * 2.5};} else {return {'wch': val.toString().length * 2.5};}}))/*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;}else {/*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': width};}/*再判断是否为中文*/else if (val.toString().charCodeAt(0) > 255) {return {'wch': width};} else {return {'wch': width};}}))/*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 dataInfo = wb.Sheets[wb.SheetNames[0]];const borderAll = {//单元格外侧框线top: {style: 'thin'},bottom: {style: 'thin'},left: {style: 'thin'},right: {style: 'thin'}};//给所有单元格加上边框for (var i in dataInfo) {if (i === '!ref' || i === '!cols' ) {} else {dataInfo[i + ''].s = {border: borderAll}}}// // 去掉标题边框// let arr = ["A1", "B1", "C1", "D1", "E1", "F1", "G1", "H1", "I1", "J1", "K1", "L1", "M1", "N1", "O1", "P1", "Q1", "R1", "S1", "T1", "U1", "V1", "W1", "X1", "Y1", "Z1"];// arr.some(v => {// //console.log(v)// let a = merges[0].split(':')// //console.log(a)// if (v == a[1]) {////console.log(dataInfo[v])//dataInfo[v].s = {}//return true;// } else {////console.log(dataInfo[v])//dataInfo[v]//dataInfo[v].s = {}// }// })//设置主标题样式// dataInfo["A1"].s = {// font: {//name: '宋体',//sz: 18,////color: {rgb: "ff0000"},//bold: true,//italic: false,//underline: false// },// alignment: {//horizontal: "center",//vertical: "center"// },// fill: {////单元格背景色////fgColor: {rgb: "008000"},// },// };// 这是表头行的样式var tableTitleFont = {font: {name: '宋体',sz: 18,//color: {rgb: "ff0000"},bold: true,italic: false,underline: false},alignment: {horizontal: "center",vertical: "center"},fill: {//单元格背景色//fgColor: {rgb: "008000"},},border:borderAll};for(var q in myRowFont){for (var b in dataInfo) {if (b.indexOf(myRowFont[q]) > -1) {dataInfo[b].s = tableTitleFont}}}var wbout = XLSX.write(wb, {bookType: bookType,bookSST: false,type: 'binary'});saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), `${filename}.${bookType}`);}

四、Vue代码

<template><div class="hello"><el-buttontype="primary"icon="el-icon-document"@click="exportExcel">导出Excel</el-button></div></template><script>export default {name: 'HelloWorld',data () {return {msg: 'Welcome to Your Vue.js App',anchorTable: [{classBook: "aaaa",className: "aaaa",endTime: "",errorDescribe: "教师账号已注册",organName: "",startTime: "",studentName: "",studentNo: "",teacherName: "fghfdh",teacherOrgan: "苏州新东方",teacherPhone: "13245455345"},{classBook: "bbbb",className: "bbbb",endTime: "",errorDescribe: "教师账号已注册",organName: "",startTime: "",studentName: "",studentNo: "",teacherName: "fghfdh",teacherOrgan: "苏州新东方",teacherPhone: "13245455345"},{classBook: "cccc",className: "cccc",endTime: "",errorDescribe: "教师账号已注册",organName: "",startTime: "",studentName: "",studentNo: "",teacherName: "fghfdh",teacherOrgan: "苏州新东方",teacherPhone: "13245455345"},{classBook: "dddd",className: "dddd",endTime: "",errorDescribe: "教师账号已注册",organName: "",startTime: "",studentName: "",studentNo: "",teacherName: "xcvbxv",teacherOrgan: "苏州新东方",teacherPhone: "13453455355"}]}},mounted () {},methods: {exportExcel() {import('../excel/excelOut').then(excel => {const tHeader = ['','','船名', '船长', '货种', '载重吨', '净吨'] //表头const title = ['测试1','测试2','锚地船舶', '', '', '', ''] //标题//表头对应字段const filterVal = ['classBook','className','errorDescribe','teacherName','teacherOrgan','teacherPhone','organName']const list = this.anchorTableconst data = this.formatJson(filterVal, list)data.map(item => {item.map((i, index) => {if (!i) {item[index] = ''}})})const merges = ['A1:A2','B1:B2','C1:G1'] //合并单元格excel.export_json_to_excel({title: title,header: tHeader,data,merges,filename: '锚地船舶',autoWidth: true,width:150,bookType: 'xlsx',myRowFont: ['1','2']})})},formatJson(filterVal, jsonData) {return jsonData.map(v => filterVal.map(j => v[j]))},}}</script><!-- Add "scoped" attribute to limit CSS to this component only --><style scoped></style>