由于项目需要，需要在不调用后台接口的情况下，将json数据导出到excel表格，参考了好多资料以及很多大佬写的博客终于实现，兼容chrome没问题，其他还没有测试过，这边介绍两种实现方式，并附上代码和gif动图，博主不才还望轻喷
方法一
将table标签，包括tr、td等对json数据进行拼接，将table输出到表格上实现，这种方法的弊端在于输出的是伪excel，虽说生成xls为后缀的文件，但文件形式上还是html，代码如下
<html><head><p style="font-size: 20px;color: red;">使用table标签方式将json导出xls文件</p><button onclick='tableToExcel()'>导出</button></head><body><script>function tableToExcel(){//要导出的json数据const jsonData = [{name:'路人甲',phone:'123456',email:'123@'},{name:'炮灰乙',phone:'123456',email:'123@'},{name:'土匪丙',phone:'123456',email:'123@'},{name:'流氓丁',phone:'123456',email:'123@'},]//列标题let str = '<tr><td>姓名</td><td>电话</td><td>邮箱</td></tr>';//循环遍历，每行加入tr标签，每个单元格加td标签for(let i = 0 ; i < jsonData.length ; i++ ){str+='<tr>';for(let item in jsonData[i]){//增加\t为了不让表格显示科学计数法或者其他格式str+=`<td>${ jsonData[i][item] + '\t'}</td>`;}str+='</tr>';}//Worksheet名let worksheet = 'Sheet1'let uri = 'data:application/vnd.ms-excel;base64,';//下载的表格模板数据let template = `<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>${worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>${str}</table></body></html>`;//下载模板window.location.href = uri + base64(template)}//输出base64编码function base64 (s) { return window.btoa(unescape(encodeURIComponent(s))) }</script></body></html>
方法二
通过将json遍历进行字符串拼接，将字符串输出到csv文件，代码如下
<html><head><p style="font-size: 20px;color: red;">使用a标签方式将json导出csv文件</p><button onclick='tableToExcel()'>导出</button></head><body><script>function tableToExcel(){//要导出的json数据const jsonData = [{name:'路人甲',phone:'123456789',email:'000@'},{name:'炮灰乙',phone:'123456789',email:'000@'},{name:'土匪丙',phone:'123456789',email:'000@'},{name:'流氓丁',phone:'123456789',email:'000@'},]//列标题，逗号隔开，每一个逗号就是隔开一个单元格let str = `姓名,电话,邮箱\n`;//增加\t为了不让表格显示科学计数法或者其他格式for(let i = 0 ; i < jsonData.length ; i++ ){for(let item in jsonData[i]){str+=`${jsonData[i][item] + '\t'},`;}str+='\n';}//encodeURIComponent解决中文乱码let uri = 'data:text/csv;charset=utf-8,\ufeff' + encodeURIComponent(str);//通过创建a标签实现let link = document.createElement("a");link.href = uri;//对下载的文件命名link.download = "json数据表.csv";document.body.appendChild(link);link.click();document.body.removeChild(link);}</script></body></html>
参考了很多大佬的博客其中这两篇对我启发最大，感谢！
/oscar999/article/details/16342699
/aa122273328/article/details/50388673
转自/hhzzcc_/article/details/80419396
第三种方式
/srcvendor/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));
src/vendor/Export2Excel.js
/* eslint-disable */require('script-loader!file-saver');require('./Blob');require('script-loader!xlsx/dist/xlsx.core.min');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);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);/* 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'});var title = defaultTitle || '列表'saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), title + ".xlsx")}
公共JS导出方法
export const exportXls=(list)=>{const formatJson=(filterVal, jsonData)=>{return jsonData.map(v => filterVal.map(j => v[j]))}const {export_json_to_excel} = require('@/vendor/Export2Excel.js')let tHeader = [ '编码', '名称', ]; //表头let filterVal = ['ID', 'Name',];//table表格中对应的属性名let data =formatJson(list.filterVal, list.data);//表格绑定数据positionData转jsonexport_json_to_excel(list.tHeader, data, list.name);}
