提示：文章写完后，目录可以自动生成，如何生成可参考右边的帮助文档
文章目录
前言一、下载xlsx xlsx-style二、使用步骤1.引入库xlxs2.引入库xlsx-style三、页面中下载表格1. html代码2. js代码3.页面的效果4下载下来的效果前言
vue前端使用xlsx和 xlsx-style 下载表格 使用 xlsx-style可以合并单元格，修改样式
一、下载xlsx xlsx-style
npm i xlsxnpm i xlsx-style
二、使用步骤
1.引入库xlxs
这里注意，单纯引用xlsx会有问题，然后我这边是吧xlsx.js下载下来，然后再index.html中引用 我在页面是这个使用的，代码如下（示例）：
2.引入库xlsx-style
使用xlsx-style 的时候要注意，使用的是会报错误，所以，我们需要改他的源码，下面是正确的修改方式，代码如下（示例）：
# 第一步 修改nod_modules 里面xlsx-style文件夹下面dist文件夹下的cpexcel.js文件807: var cpt = cptable;# 第二步 修改xlsx-style文件夹下面ods.js文件10: return require('./' + 'xlsx').utils;12: try {return require('./' + 'xlsx').utils; }# 第三步 修改xlsx-style文件夹下面的xlsx.js文件 替换write_ws_xml_data以下方法var DEF_PPI = 96, PPI = DEF_PPI;function px2pt(px) {return px * 96 / PPI; }function pt2px(pt) {return pt * PPI / 96; }function write_ws_xml_data(ws, opts, idx, wb) {var o = [], r = [], range = safe_decode_range(ws['!ref']), cell, ref, rr = "", cols = [], R, C,rows = ws['!rows'];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;if(ws[ref] === undefined) continue;if((cell = write_ws_xml_cell(ws[ref], ref, ws, opts, idx, wb)) != null) r.push(cell);}if(r.length > 0){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("");}
三、页面中下载表格
1. html代码
代码如下（示例）：
<template><div class="page"><el-button type="primary" @click="upload">主要按钮</el-button><el-table :data="tableData" 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>
2. js代码
import XLSXStyle from "xlsx-style";data() {return {tableData: [{date: "-05-02",name: "王小虎",address: "上海市普陀区金沙江路 1518 弄",},{date: "-05-04",name: "王小虎",address: "上海市普陀区金沙江路 1517 弄",},{date: "-05-01",name: "王小虎",address: "上海市普陀区金沙江路 1519 弄",},{date: "-05-03",name: "王小虎",address: "上海市普陀区金沙江路 1516 弄",},],};},methods: {// 下载excelupload() {if (this.tableData.length > 0) {// 表头设置const aoa = [["固收指标表"], [""]];// const time = this.$moment(this.searchParam.vDate).format("YYYYMMDD");console.log(this.tableData);aoa.push(["中文指标名称", "英文指标名称", "指标值"]);this.tableData.map((item) => {aoa.push([item.date, item.name, item.address]);});const sheet = this.xlsxAddStyle(aoa);this.openDownloadDialog(this.sheet2blob(sheet), `1.xlsx`);} else {this.$message.warning({message: "没有数据无法导出",duration: 1000,});}},/*** 通用的打开下载对话框方法，没有测试过具体兼容性* @param url 下载地址，也可以是一个blob对象，必选* @param saveName 保存文件名，可选*/openDownloadDialog(url, saveName) {var 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sheet2blob(sheet, sheetName) {var sheetNameS = sheetName || "sheet1";var workbook = {SheetNames: [sheetNameS],Sheets: {},};workbook.Sheets[sheetNameS] = 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xlsxAddStyle(xlsx) {const sheet = XLSX.utils.aoa_to_sheet(xlsx);// console.log(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];if (typeof element === "object") {const index = Number(key.slice(1)) - 1;rowH[index] = {hpx: 24 };element.s = {alignment: {horizontal: "left", // 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 = "right";}// 标题的样式if (index === 2) {element.s.font.bold = true;element.s.fill.fgColor = {rgb: "FFCCFFFF" };}// 处理合并单元格数组 s 开始 e 结束 c 列 r行if (element.v === "固收指标表") {mergeArr.push({s: {c: 0, r: 0 },e: {c: 2, r: 1 },});}}}}// 表头的样式设置sheet["A1"].s.alignment.horizontal = "center";sheet["A1"].s.font.underline = true;sheet["A1"].s.font.sz = 18;sheet["A1"].s.border = noBorder;// 单元格的列宽sheet["!cols"] = [{wpx: 350 }, {wpx: 450 }, {wpx: 160 }];sheet["!rows"] = rowH;sheet["!merges"] = mergeArr;return sheet;},},
