1、导入插件
npm install --save xlsx
npm install -S file-saver
npm install -D script-loader
npm install --save xlsx-style(修改表格样式要下载)
（如果安装了npm install --save xlsx-style会报错: This relative module was not found: ./cptable in/node_modules/xlsx-style@0.8.13@xlsx-style/dist/cpexcel.js） 可以直接修改源代码: 在\node_modules\xlsx-style\dist\cpexcel.js 807行； 将var cpt = require(’./cpt’ + ‘able’); 改成var cpt = cptable;
2、创建JS文件
3、主要代码
exportExcel.js
"
// Export2Excel.js/* eslint-disable */import 'script-loader!file-saver';import './Blob.js'; //转二进制用 这边要写你的blob的实际地址import 'script-loader!xlsx/dist/xlsx.core.min';import XLSXS from 'xlsx-style'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 = XLSXS.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 = XLSXS.SSF._table[14]; cell.v = datenum(cell.v); } else cell.t = 's'; ws[cell_ref] = cell; } } if (range.s.c < 10000000) ws['!ref'] = XLSXS.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 exportjsontoexcel({ data, //格式后的数据 filename, //表名 merges = [], //合并单元格格式 autoWidth = true, bookType = 'xlsx', formStyle, // 样式修改} = {}) { /* original data */ //判断是否有表名、没有则赋予固定表名 filename = filename || 'excel-list' var ws_name = "SheetJS"; var wb = new Workbook(), //将data转化格式 用于接下来动态宽度 ws = sheet_from_array_of_arrays(data); //合并单元格 ws['!merges'] = merges //动态设置宽度 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': 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 }; } })) //判断合并单元格中是否有同行合并，有则将其长度设为0 if (merges.length > 0) { if (!ws['!merges']) ws['!merges'] = []; merges.forEach(a => { let w1 = a.s.c let e1 = a.s.r let w2 = a.e.c let e2 = a.e.r if (e1 == e2) { if (+w1 > +w2) { let jh = w1 w1 = w2 w2 = jh } for (let i = +w1; i <= +w2; i++) { colWidth[e1][i]['wch'] = 0; } } }) } /*以第一行为初始值 判断对应每一列的最大长度*/ 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' } }; //给所以单元格加上边框 const letter = { "A": 0, "B": 1, "C": 2, "D": 3, "E": 4, "F": 5, "G": 6, "H": 7, "I": 8, "J": 9, "K": 10, "L": 11, "M": 12, "N": 13, "O": 14, "P": 15, "Q": 16, "R": 17, "S": 18, "T": 19, "U": 20, "V": 21, "W": 22, "X": 23, "Y": 24, "Z": 25 } const range = dataInfo['!ref'].split(':') // 表格范围区域 let a1 = range[0].slice(0, 1) // A let b1 = +range[0].slice(1) // 1 let a2 = range[1].slice(0, 1) // 最大为Z（26） 表格的列数 let b2 = +range[1].slice(1) // 表格的行数 for (let i = letter[a1]; i <= letter[a2]; i++) { for (let j = b1; j <= b2; j++) { let value = '' for (let key in letter) { if (letter[key] == i) { value = key } } if (!dataInfo[value + j]) { dataInfo[value + j] = { s: { border: borderAll, } } } } } for (var i in dataInfo) { if (i == '!ref' || i == '!merges' || i == '!cols') { } else { dataInfo[i + ''].s = { border: borderAll, //居中属性 alignment: { horizontal: "center", vertical: "center" }, } } } //设置主标题样式 for (let key in formStyle) { dataInfo[key].s = formStyle[key] dataInfo[key].s.border = borderAll } var wbout = XLSXS.write(wb, { bookType: bookType, bookSST: false, type: 'binary' }); saveAs(new Blob([s2ab(wbout)], { type: "application/octet-stream" }), `${filename}.${bookType}`);};"
Blob.js
"
/* eslint-disable *//* Blob.js * A Blob implementation. * 2014-05-27 * * By Eli Grey, http://eligrey.com * By Devin Samarin, https://github.com/eboyjr * License: X11/MIT * See LICENSE.md *//*global self, unescape *//*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true, plusplus: true *//*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */(function (view) { "use strict"; view.URL = view.URL || view.webkitURL; if (view.Blob && view.URL) { try { new Blob; return; } catch (e) {} } // Internally we use a BlobBuilder implementation to base Blob off of // in order to support older browsers that only have BlobBuilder var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function (view) { var get_class = function (object) { return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1]; }, FakeBlobBuilder = function BlobBuilder() { this.data = []; }, FakeBlob = function Blob(data, type, encoding) { this.data = data; this.size = data.length; this.type = type; this.encoding = encoding; }, FBB_proto = FakeBlobBuilder.prototype, FB_proto = FakeBlob.prototype, FileReaderSync = view.FileReaderSync, FileException = function (type) { this.code = this[this.name = type]; }, file_ex_codes = ( "NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR " + "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR" ).split(" "), file_ex_code = file_ex_codes.length, real_URL = view.URL || view.webkitURL || view, real_create_object_URL = real_URL.createObjectURL, real_revoke_object_URL = real_URL.revokeObjectURL, URL = real_URL, btoa = view.btoa, atob = view.atob , ArrayBuffer = view.ArrayBuffer, Uint8Array = view.Uint8Array; FakeBlob.fake = FB_proto.fake = true; while (file_ex_code--) { FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1; } if (!real_URL.createObjectURL) { URL = view.URL = {}; } URL.createObjectURL = function (blob) { var type = blob.type, data_URI_header; if (type === null) { type = "application/octet-stream"; } if (blob instanceof FakeBlob) { data_URI_header = "data:" + type; if (blob.encoding === "base64") { return data_URI_header + ";base64," + blob.data; } else if (blob.encoding === "URI") { return data_URI_header + "," + decodeURIComponent(blob.data); } if (btoa) { return data_URI_header + ";base64," + btoa(blob.data); } else { return data_URI_header + "," + encodeURIComponent(blob.data); } } else if (real_create_object_URL) { return real_create_object_URL.call(real_URL, blob); } }; URL.revokeObjectURL = function (object_URL) { if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) { real_revoke_object_URL.call(real_URL, object_URL); } }; FBB_proto.append = function (data /*, endings*/ ) { var bb = this.data; // decode data to a binary string if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) { var str = "", buf = new Uint8Array(data), i = 0, buf_len = buf.length; for (; i < buf_len; i++) { str += String.fromCharCode(buf[i]); } bb.push(str); } else if (get_class(data) === "Blob" || get_class(data) === "File") { if (FileReaderSync) { var fr = new FileReaderSync; bb.push(fr.readAsBinaryString(data)); } else { // async FileReader won't work as BlobBuilder is sync throw new FileException("NOT_READABLE_ERR"); } } else if (data instanceof FakeBlob) { if (data.encoding === "base64" && atob) { bb.push(atob(data.data)); } else if (data.encoding === "URI") { bb.push(decodeURIComponent(data.data)); } else if (data.encoding === "raw") { bb.push(data.data); } } else { if (typeof data !== "string") { data += ""; // convert unsupported types to strings } // decode UTF-16 to binary string bb.push(unescape(encodeURIComponent(data))); } }; FBB_proto.getBlob = function (type) { if (!arguments.length) { type = null; } return new FakeBlob(this.data.join(""), type, "raw"); }; FBB_proto.toString = function () { return "[object BlobBuilder]"; }; FB_proto.slice = function (start, end, type) { var args = arguments.length; if (args < 3) { type = null; } return new FakeBlob( this.data.slice(start, args > 1 ? end : this.data.length), type, this.encoding ); }; FB_proto.toString = function () { return "[object Blob]"; }; FB_proto.close = function () { this.size = this.data.length = 0; }; return FakeBlobBuilder; }(view)); view.Blob = function Blob(blobParts, options) { var type = options ? (options.type || "") : ""; var builder = new BlobBuilder(); if (blobParts) { for (var i = 0, len = blobParts.length; i < len; i++) { builder.append(blobParts[i]); } } return builder.getBlob(type); };}(typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content || this));"
vue 调用导出
import { exportjsontoexcel } from '@/libs/exportExcel'
handleExport () { // s-start-开始；e-end-结束；r-row-行；c-column-列 let title = 'xxx表格' let timeText = `统计日期：2020到2021` let headList = [ [title, null, null, null, null, null, null, null, null, null, null, null, null, null, null], [timeText, null, null, null, null, null, null, null, null, null, null, null, null, null, null], ['工号', '姓名', '项目提成', null, null, null, null, null, '销售提成', null, '开卡提成', null, '充值提成', null, '合计（元）'], ['工号', '姓名', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M'] ] // 导出的表头数据
let contentList = [] // 内容导出的数据（表格数据） let merges1 = [ // 设置表头单元格合并 { s: { r: 0, c: 0 }, e: { r: 0, c: 14 } }, { s: { r: 1, c: 0 }, e: { r: 1, c: 14 } }, { s: { r: 2, c: 2 }, e: { r: 2, c: 7 } }, { s: { r: 2, c: 8 }, e: { r: 2, c: 9 } }, { s: { r: 2, c: 10 }, e: { r: 2, c: 11 } }, { s: { r: 2, c: 12 }, e: { r: 2, c: 13 } }, { s: { r: 2, c: 0 }, e: { r: 3, c: 0 } }, { s: { r: 2, c: 1 }, e: { r: 3, c: 1 } }, { s: { r: 2, c: 14 }, e: { r: 3, c: 14 } } ] let merges2 = [] // 设置表格数据单元格合并 let aoa = [...headList, ...contentList] // 导出的数据 const filename = `文件名.xlsx` let merges = [...merges1, ...merges2] // 合并单元格 // 样式修改 let formStyle = {} formStyle['A1'] = { font: { name: '宋体', bold: true, italic: false, underline: false }, alignment: { horizontal: 'center', vertical: 'center' } } exportjsontoexcel({ data: aoa, // 表格数据 merges, // 合并单元格 filename, // 导出文件名 autoWidth: true, // 自适应宽度 bookType: 'xlsx', // 导出类型 formStyle: formStyle // 特殊行或列样式 }) },
4、参考文档
blog.csdn.net/W_H_M_S/art…（链接1）
blog.csdn.net/weixin_4242…（链接2）
5、补充说明
由于一开始开发时，不需要导出样式（只有合并单元格），所以采用链接2的方法，比较简便。后面新增了样式调整，但又不想改变原有数据结构。所以改掉了链接1（exportExcel.js）中的一些代码。主要修改如下图：
由于每个列表导出功能样式不一致，所以新增了 formStyle 参数
//设置主标题样式（注意：会覆盖上面代码写的样式） for (let key in formStyle) { dataInfo[key].s = formStyle[key] dataInfo[key].s.border = borderAll //给所有单元格加上边框 }
