1.安装插件

npm xlsx-style   ^0.18.5

npm install xlsx -S  ^0.8.13

2. 修改代码 node_modules里面找到  以下位置xlsx.js  搜索 write_ws_xml_data

替换成以下代码

function write_ws_xml_data(ws, opts, idx, wb) {var o = [], r = [], range = safe_decode_range(ws['!ref']), cell = "", ref, rr = "", cols = [], R = 0, C = 0, rows = ws['!rows'];var dense = Array.isArray(ws);var params = ({ r: rr }), row, height = -1;for (C = range.s.c; C <= range.e.c; ++C) cols[C] = encode_col(C);for (R = range.s.r; R <= range.e.r; ++R) {r = [];rr = encode_row(R);for (C = range.s.c; C <= range.e.c; ++C) {ref = cols[C] + rr;var _cell = dense ? (ws[R] || [])[C] : ws[ref];if (_cell === undefined) continue;if ((cell = write_ws_xml_cell(_cell, ref, ws, opts, idx, wb)) != null) r.push(cell);}if (r.length > 0 || (rows && rows[R])) {params = ({ r: rr });if (rows && rows[R]) {row = rows[R];if (row.hidden) params.hidden = 1;height = -1;if (row.hpx) height = px2pt(row.hpx);else if (row.hpt) height = row.hpt;if (height > -1) { params.ht = height; params.customHeight = 1; }if (row.level) { params.outlineLevel = row.level; }}o[o.length] = (writextag('row', r.join(""), params));}}if (rows) for (; R < rows.length; ++R) {if (rows && rows[R]) {params = ({ r: R + 1 });row = rows[R];if (row.hidden) params.hidden = 1;height = -1;if (row.hpx) height = px2pt(row.hpx);else if (row.hpt) height = row.hpt;if (height > -1) { params.ht = height; params.customHeight = 1; }if (row.level) { params.outlineLevel = row.level; }o[o.length] = (writextag('row', "", params));}}return o.join("");}

3.封装组件

import * as XLSX from "xlsx"
import XLSXStyle from "xlsx-style";
let _needSetStyles = []
let cols = []
let ifsubhead = false/*** 导出excel表格* @param {Array} tableData - 需要的出表格的数组* @param {Array} header - 表头* @param {Array} headerItem - 子表* @param {String} notice - 注意事项* @param {Array} needChangeColor - 需要修改颜色的属性* @param {Array} clo - 每一项的宽度* @param {Array} subhead - 副标题信息* @param {string} filename - 导出文件名称*/
export function exportData(tableData, header, headerItem, notice, needSetStyles = [], col = [], subhead = [], filename) {// 检查是否有需要修改颜色的属性_needSetStyles = needSetStyles.length > 0 ? needSetStyles : [];// 检查是否有指定每一列的宽度cols = col.length > 0 ? col : [];if (tableData.length > 0) {// 表头设置const aoa = [[notice]];console.log(tableData);if (subhead.length > 0) {aoa.push(subhead);ifsubhead = true}aoa.push(header);console.log(headerItem, 'headerItem');if (headerItem.length > 0) {headerItem.forEach(item => {aoa.push(item)})}// 创建 Excel 表格并设置样式const sheet = xlsxAddStyle(aoa, notice);// 导出文件openDownloadDialog(sheet2blob(sheet), `${filename}.xlsx`);} else {// 表格数据为空，可以进行相应的处理}}
export function openDownloadDialog(url, saveName) {let urlA;if (typeof url === "object" && url instanceof Blob) {urlA = URL.createObjectURL(url); // 创建blob地址}const aLink = document.createElement("a");aLink.href = urlA;// HTML5新增的属性，指定保存文件名，可以不要后缀，注意，file:///模式下不会生效aLink.download = saveName || "";let event;if (window.MouseEvent) event = new MouseEvent("click");else {event = document.createEvent("MouseEvents");event.initMouseEvent("click",true,false,window,0,0,0,0,0,false,false,false,false,0,null);}aLink.dispatchEvent(event);
}
// 将一个sheet转成最终的excel文件的blob对象，然后利用URL.createObjectURL下载
export function sheet2blob(sheet, sheetName) {var sheetNameS = sheetName || "sheet3";var workbook = {SheetNames: [sheetNameS],Sheets: {},};workbook.Sheets[sheetNameS] = sheet;workbook.Sheets['sheet100'] = sheet;// 生成excel的配置项var wopts = {bookType: "xlsx", // 要生成的文件类型bookSST: false, // 是否生成Shared String Table，官方解释是，如果开启生成速度会下降，但在低版本IOS设备上有更好的兼容性type: "binary",};var wbout = XLSXStyle.write(workbook, wopts);// XLSXStyle.write(wb, { bookType: bookType, bookSST: false, type: 'binary' });var blob = new Blob([s2ab(wbout)], { type: "application/octet-stream" });// 字符串转ArrayBufferfunction 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;}return blob;
}
// 表格样式的设置
export function xlsxAddStyle(xlsx, filename) {// 创建工作簿// const workbook = XLSX.utils.book_new();const sheet = XLSX.utils.aoa_to_sheet(xlsx);console.log(sheet, 'sheet');const mergeArr = []; // 合并的单元格const rowH = []; // 表格每列高度// 单元格外侧有框线const borderAll = {top: { style: "thin" },bottom: { style: "thin" },left: { style: "thin" },right: { style: "thin" },};// 单元格外侧无框线const noBorder = {top: { style: "" },bottom: { style: "" },left: { style: "" },right: { style: "" },};for (const key in sheet) {if (Object.hasOwnProperty.call(sheet, key)) {const element = sheet[key];console.log(element, 'element');if (typeof element === "object") {const index = Number(key.slice(1)) - 1;rowH[index] = { hpt: 20, hpx: 20 };element.s = {alignment: {horizontal: "center", // 所有单元格右对齐vertical: "center", // 所有单元格垂直居中},font: {name: "宋体",sz: 10,italic: false,underline: false,},// border: borderAll,// fill: {//   fgColor: { rgb: "FFFFFFFF" },// },};// 指标值表格的样式if (key.indexOf("C") > -1) {element.s.alignment.horizontal = "center";}// 标题的样式if (index === 1) {element.s.font.bold = true;element.s.rows = { hpx: 150 }}// 如果传来副标题，那么之前设置的样式会被副标题顶替掉，需要重新设置样式if (ifsubhead) {if (index === 1) {element.s.font.bold = true;// 高rowH[1] = { hpt: 20, hpx: 20 }}if (index === 2) {element.s.font.bold = true;rowH[2] = { hpt: 30, hpx: 30 }}}// 处理合并单元格数组 s 开始 e 结束  c 列 r行if (element.v == filename) {mergeArr.push({s: { c: 0, r: 0 },e: { c: cols.length - 1, r: 0 },});rowH[0] = { hpt: 110, hpx: 110 }}if (element.v.includes('职业工种')) {mergeArr.push({s: { c: 0, r: 1 },e: { c: 1, r: 1 },});}}}}// 表头的样式设置sheet["A1"].s.alignment.horizontal = "left";// sheet["A1"].s.font.underline = true;sheet["A1"].s.font.sz = 11;sheet["A1"].s.font.color = { rgb: 'FFFFFF' }sheet["A1"].s.border = borderAllsheet['A1'].s.fill = { fgColor: { rgb: '217346' } }// 单元格的列宽sheet["!cols"] = cols// 设置行高sheet['!rows'] = rowH;// 自定义样式_needSetStyles.forEach(item => {sheet[item.name].s = item.style})sheet["!merges"] = mergeArr;return sheet
}

4.页面使用

<template><div><el-button type="success" @click="createTemplate">导出excel</el-button></div></template>
<script>
import {exportData} from '@/untils/exportData'  //上面组件的地址export default {methods: {createTemplate() {let templateList = [{examNumber:'物质名称1',name:'物质因子1'}]let header = ['物质名称', '物质因子', '时间']let subhead = ['不存在日校准的日期请对整列进行删除；请按实际校准数据时间修改日期和小时值，若时间列不够可自行增加列；缺失数据填充-999；请勿填充非数值内容；若模板中与实际监测因子个数不一致请联系平台管理人员'];let notice = [1、xxxxxxxxxxxxxxx；2、xxxxxxxxxxxxxxx；]let headerItem = templateList.map(item => {return [item.examNumber, item.name, '0']})const clos = [{ wpx: 210 }, { wpx: 210 }, { wpx: 420 }];// 字体样式const fontColorStyle = {name: "宋体",sz: 10,italic: false,underline: false,color: { rgb: 'FFFFFF' },};// 单元格外侧边框const borderStyle = {top: { style: "thin" },bottom: { style: "thin" },left: { style: "thin" },right: { style: "thin" },};const setStyles = [{name: 'A3',style: {font: fontColorStyle,fill: {fgColor: { rgb: 'FF4949' } // 设置背景颜色},alignment: {horizontal: "center", // 所有单元格右对齐vertical: "center", // 所有单元格垂直居中},border: borderStyle}},{name: 'B3',style: {font: fontColorStyle,fill: {fgColor: { rgb: 'FF4949' } // 设置背景颜色},alignment: {horizontal: "center", // 所有单元格右对齐vertical: "center", // 所有单元格垂直居中},border: borderStyle}},{name: 'C3',style: {font:fontColorStyle,fill: {fgColor: { rgb: 'FF4949' } // 设置背景颜色},alignment: {horizontal: "center", // 所有单元格右对齐vertical: "center", // 所有单元格垂直居中},border: borderStyle}}]exportData(templateList, header, headerItem, notice, setStyles, clos, subhead, '导出模板')},},
}
</script>

就导出成功啦