vue项目table表格导出为excel
1、安装: npm install -S file-saver xlsx
npm install -D script-loader
npm install -D xlsx-style (自定义样式)
2、新建excel文件夹
3、excel文件夹下新建Blob.js和Export2Excel.js文件
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));
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 ranges ranges.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 Span if (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 Value outRow.push(cellValue !== "" ? cellValue : null); //Handle Colspan if (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], s: defaultCellStyle }; if (cell.v == null) continue; /// 这里生成cell的时候,使用上面定义的默认样式 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 }; } /*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 }; } })) /*以第一行为初始值*/ 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; console.log("======", result); /* 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") }
4、在使用的vue页面里:
1 exportExcel() { 2 require.ensure([], () => { 3 const { 4 export_json_to_excel, 5 } = require("../../utils/excel/Export2Excel");///////////注意引入路径 6 // 设置Excel的表格第一行的标题 7 const tHeader = [ 8 "设备名称", 9 "设备类型编号", 10 "总线地址", 11 "网关IP", 12 "网关编号", 13 "边缘IP", 14 "serverIP", 15 "品牌", 16 "收集数据时间间隔", 17 "连接频段", 18 "连接模式", 19 "设计寿命(h)", 20 "设备编码", 21 "设备描述", 22 "deviceNo", 23 "设备优先级", 24 "设备状态", 25 "设备状态描述", 26 "设备类型名称", 27 "读取时间间隔", 28 "生产日期", 29 "安装位置", 30 "安装时间", 31 "规格", 32 "供货商", 33 ]; 34 const filterVal = [ 35 "deviceName", 36 "deviceTypeNo", 37 "deviceAddr", 38 "gateIp", 39 "gateNo", 40 "edgeIp", 41 "serverIp", 42 "brand", 43 "collInterval", 44 "connectChannal", 45 "connectMode", 46 "designLife", 47 "deviceCode", 48 "deviceDsc", 49 "deviceNo", 50 "devicePriority", 51 "deviceStatus", 52 "deviceStatusDesc", 53 "deviceTypeName", 54 "pollingInterval", 55 "productionDate", 56 "setLocation", 57 "setLocationDateTime", 58 "specs", 59 "supplier", 60 ]; // 上面的index、nickName、name是tableData里对象的属性 61 const list = this.tableDataExcel; //把data里的tableData存到list 62 console.log("??", list); 63 const data = this.formatJson(filterVal, list); 64 export_json_to_excel(tHeader, data, "设备列表"); 65 }); 66 },
formatJson(filterVal, jsonData) {
return jsonData.map((v) => filterVal.map((j) => v[j]));
},
如果报错:* ./cptable in ./node_modules/xlsx-style/dist/cpexcel.js
找到./node_modules/xlsx-style/dist/cpexcel.js
将807行改为 var cpt = cptable;