第一：安装依赖
npm install -S file-saver xlsx
npm install -D script-loader
npm install -D xlsx-style （自定义样式）
第二：在目录里新建excel文件夹
在excel文件夹里新建两个js文件（Blob.js和Export2Excel.js）
Blob.js
/* eslint-disable *//* Blob.js* A Blob implementation.* -05-27** By Eli Grey, * By Devin Samarin, /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 /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 BlobBuildervar BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function(view) {varget_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) {vartype = 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 stringif (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {varstr = "", 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 syncthrow 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 stringbb.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));
Export2Excel.js：
/* eslint-disable */require('script-loader!file-saver');require('./Blob');require('script-loader!xlsx/dist/xlsx.core.min');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);}const defaultCellStyle = {font: {name: "微软雅黑", sz: 12, color: { auto: 1 } ,},border: {color: { auto: 1 },top: { style: 'thin' },bottom: { style: 'thin'},left: { style: 'thin' },right: { style: 'thin' }},alignment: {/// 自动换行wrapText: 1,// 居中horizontal: "center",vertical: "center",indent: 0}};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] };/// 这里生成cell的时候，使用上面定义的默认样式const cell = {v: data[R][C], s: defaultCellStyle};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);console.log('a');var oo = generateArray(theTable);var ranges = oo[1];/* original data */var data = oo[0];var ws_name = 'SheetJS';console.log(data);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');}function formatJson(jsonData) {console.log(jsonData);}export function export_json_to_excel(th, jsonData, defaultTitle) {/* original data */var data = jsonData;data.unshift(th);var ws_name = 'SheetJS';var wb = new Workbook(),ws = sheet_from_array_of_arrays(data);/*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 };} else if (val.toString().charCodeAt(0) > 255) {/*再判断是否为中文*/return { wch: val.toString().length * 2 };} else {return { wch: val.toString().length };}}));/*以第一行为初始值*/let result = colWidth[0];colWidth[0][0]['wch'] = 10;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;// const borderAll = {// //单元格外侧框线// top: { style: 'thin' },// bottom: { style: 'thin' },// left: { style: 'thin' },// right: { style: 'thin' }// };// data['!cols'] = [];// for (let key in data) {// if (data[key] instanceof Object) {// data[key].s = {// border: borderAll,// alignment: {// horizontal: 'center', //水平居中对齐// vertical: 'center'// },// font: { sz: 12 },// bold: true,// numFmt: 0// };// data['!cols'].push({ wpx: 115 });// }// // console.log(1)// }var wbout = XLSX.write(wb, { bookType: 'xlsx', bookSST: false, type: 'binary' });var title = defaultTitle || '列表';saveAs(new Blob([ s2ab(wbout) ], { type: 'application/octet-stream' }), title + '.xlsx');}
util.js（我是建在utils文件夹）
export function export2Excel(columns,list,calName){require.ensure([], () => {const { export_json_to_excel } = require('../excel/Export2Excel'); // 注意路径let tHeader = []let filterVal = []// console.log(columns)if(!columns){return;}columns.forEach(item =>{tHeader.push(item.title)filterVal.push(item.key)})const data = list.map(v => filterVal.map(j => v[j]))export_json_to_excel(tHeader, data, calName);})}
第四：在需要的页面import引入
import { export2Excel } from '../utils/util'
第五：点击导出
ps 多级表头导出
Export2Excel.js：同样的 就是最后一个方法不同
export function export_json_to_excel ({title,//标题multiHeader = [],header,//表头 格式:[[],[]]多级菜单，从下往上data,//格式后的数据filename,//表名merges = [],//需要合并的单元格 格式:[[],[]]autoWidth = true,bookType = 'xlsx'} = {}) {/* original data *///判断是否有表名、没有则赋予固定表名filename = filename || 'excel-list'//获取所有数据data = [...data]//添加表头进数据最上层header.forEach(element => {data.unshift(element);});//添加标题进数据最上层 在表头之上data.unshift(title);//判断multiHeader是否有值(原作为标题后修改的值)for (let i = multiHeader.length - 1; i > -1; i--) {data.unshift(multiHeader[i])}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if (merges.length > 0) {if (!ws['!merges']) ws['!merges'] = [];merges.forEach(a => {a.forEach(item => {ws['!merges'].push(XLSX.utils.decode_range(item))})})}//动态设置宽度if (autoWidth) {console.log(1)}/*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': 13};}/*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0if (merges.length > 0) {if (!ws['!merges']) ws['!merges'] = [];merges.forEach(a => {a.forEach(item => {let q = item.split(':')let w1 = q[0].substring(0, 1)let e1 = q[0].substring(1, 2)let w2 = q[1].substring(0, 1)let e2 = q[1].substring(1, 2)if (e1 == e2) {let abc = {"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};if (abc[w1] > abc[w2]) {let jh = w1w1 = w2w2 = jh}for (let i = abc[w1]; i <= abc[w2]; i++) {colWidth[e1 - 1][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for (var i in dataInfo) {if (i == '!ref' || i == '!merges' || i == '!cols' || i == 'A1') {} else {dataInfo[i + ''].s = {border: borderAll,//居中属性alignment: {horizontal: "center",vertical: "center"},}}}//设置主标题样式dataInfo["A1"].s = {font: {name: '宋体',sz: 12,color: { rgb: "000000" },bold: true,italic: false,underline: false},alignment: {horizontal: "center",vertical: "center"},// fill: {// fgColor: {rgb: "008000"},// },};var wbout = XLSX.write(wb, {bookType: bookType,bookSST: false,type: 'binary'});saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), `${filename}.${bookType}`);};
使用
// 拼接数据formatJson(filterVal, jsonData) {return jsonData.map((v) => filterVal.map((j) => v[j]))},handleDownloadExcel(item,ssssss) {console.log(item)console.log(ssssss)require.ensure([], () => {const { export_json_to_excel } = require('../excel/Export2Excel2') //注意这个Export2Excel路径const tHeader = [['', '试航基准', '静水(当前拟合)', '静水(历史实际)', 'bf5(当前拟合)', 'bf5(历史实际)', '试航基准', '静水(当前拟合)', '静水(历史实际)', 'bf5(当前拟合)', 'bf5(历史实际)'], // 第二行数据['','满载','','','','','空载','','','','',],//第一行]// 上面设置Excel的表格第一行的标题 格式为[[],[]]单行就输入[[]]const title = ['航速(kn)','油耗(t/day)', '', '', '', '', '', '', '', '', '', ] //标题 长度要标题长度一致const filterVal = ['speed','scantlingBasic','scantlingFitNows','scantlingPractHiss','scantlingBfxFitNows','scantlingBfxPractHiss','ballastBasic','ballastFitNows','ballastPractHiss','ballastBfxFitNows','ballastBfxPractHiss',] // tableData里对象的属性key值 就是对应的属性名const list = ssssss //把要导出的数据tableData存到listconst data = this.formatJson(filterVal, list)data.map((item) => {// console.log(item)item.map((i, index) => {if (!i) {item[index] = ''}})})const merges = [['A1:A3'], ['B1:K1'], ['B2:F2'], ['G2:K2']] //合并单元格 格式[[],[]]export_json_to_excel({title: title,header: tHeader,data,merges,filename: item + '油耗分析',autoWidth: true,bookType: 'xlsx',})})// import('@/util/Export2Excel').then(excel=>{// console.log(excel)// })},
