前端 js处理table数据转化为导出Excel文件

新建Export2Excel.js

require('script-loader!file-saver') //保存文件用
require('script-loader!@/vendor/Blob') //转二进制用
require('script-loader!xlsx/dist/xlsx.core.min') //xlsx核心
require('script-loader!xlsx-style/dist/xlsx.full.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.innerTextif (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 || 1colspan = colspan || 1ranges.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 += 1462var epoch = Date.parse(v)return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000)
}
//通用的数据和格式 (表头合并)
function sheet_from_array_of_arrays_mergeheader(data, ArrMerge) {var ws = { s: { '!row': [{ wpx: 67 }] } }ws['!cols'] = []var range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } } //c是列-1  r是内容行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 = Rif (range.s.c > C) range.s.c = Cif (range.e.r < R) range.e.r = Rif (range.e.c < C) range.e.c = Cvar cell = { v: data[R][C], s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '13' } } }if (R == 0) {cell = {v: data[R],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (R == 1) {ws['!cols'].push({ wpx: 120 })cell = {v: data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center', wrapText: true }, font: { sz: '16', bold: true } }}}if (R == data.length - 1) {if (data[R][1] == '合计')cell = {v: data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (cell.v == null) continuevar 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}}ws['!merges'] = ArrMergeif (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range)return ws
}//通用的数据和格式
function sheet_from_array_of_arrays(data, colNum) {var ws = { s: { '!row': [{ wpx: 67 }] } }ws['!cols'] = []var range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } } //c是列-1  r是内容行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 = Rif (range.s.c > C) range.s.c = Cif (range.e.r < R) range.e.r = Rif (range.e.c < C) range.e.c = Cvar cell = { v: data[R][C], s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '13' } } }if (R == 0) {cell = {v: data[R],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (R == 1) {ws['!cols'].push({ wpx: 120 })cell = {v: data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center', wrapText: true }, font: { sz: '16', bold: true } }}}if (R == data.length - 1) {if (data[R][1] == '合计')cell = {v: data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (cell.v == null) continuevar 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}}ws['!merges'] = [{ s: { c: 0, r: 0 }, e: { c: range.e.c, r: 0 } }]if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range)return ws
}
//个性化数据和格式（1）
function sheet_from_array_of_arrays_jmmxb(data, colNum) {var ws = { s: { '!row': [{ wpx: 67 }] } }ws['!cols'] = []var range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } } //c是列-1  r是内容行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 = Rif (range.s.c > C) range.s.c = Cif (range.e.r < R) range.e.r = Rif (range.e.c < C) range.e.c = Cvar cell = { v: data[R][C], s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '13' } } }if (R == 0) {cell = {v: data[R],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (R == 1) {cell = { v: data[R], s: { alignment: { horizontal: 'left', vertical: 'left' }, font: { sz: '13' } } }}if (R == 2) {ws['!cols'].push({ wpx: 120 })cell = {v: data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (R == data.length - 1) {if (data[R][1] == '合计')cell = {v: data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (cell.v == null) continuevar 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}}ws['!merges'] = [{ s: { c: 0, r: 0 }, e: { c: range.e.c, r: 0 } },{ s: { c: 0, r: 1 }, e: { c: range.e.c, r: 1 } }]if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range)return ws
}
//个性化数据和格式（2）
function sheet_from_array_of_arrays_hmzcjm(data) {var ws = { s: { '!row': [{ wpx: 67 }] } }ws['!cols'] = []var range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } }var n = 0for (var R = 0; R != data.length; ++R) {for (var C = 0; C != data[R].length; ++C) {if (range.s.r > R) range.s.r = Rif (range.s.c > C) range.s.c = Cif (range.e.r < R) range.e.r = Rif (range.e.c < C) range.e.c = Cvar cell = { v: data[R][C], s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '13' } } }if (R == 0) {ws['!cols'].push({ wpx: 140 })cell = {v: data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '16', bold: true } }}}if (R == data.length - 1) {cell = {v: '备注：' + data[R][C],s: { alignment: { horizontal: 'center', vertical: 'center' }, font: { sz: '14' } }}}if (cell.v == null) continuevar 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}}// ec控制横向几格。sr控制竖向几格ws['!merges'] = [{ s: { c: 0, r: 0 }, e: { c: 3, r: 0 } },{ s: { c: 0, r: 1 }, e: { c: 0, r: 1 } },{ s: { c: 0, r: 2 }, e: { c: 0, r: 4 } },{ s: { c: 0, r: 5 }, e: { c: 0, r: 7 } },{ s: { c: 0, r: 8 }, e: { c: 0, r: 10 } },{ s: { c: 0, r: 11 }, e: { c: 0, r: 13 } },{ s: { c: 0, r: 14 }, e: { c: 0, r: 16 } },{ s: { c: 0, r: 17 }, e: { c: 0, r: 19 } },{ s: { c: 0, r: 20 }, e: { c: 0, r: 22 } },{ s: { c: 0, r: 23 }, e: { c: 0, r: 25 } },{ s: { c: 0, r: 26 }, e: { c: 3, r: 26 } }]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) & 0xffreturn buf
}export function export_table_to_excel(id) {var theTable = document.getElementById(id)var oo = generateArray(theTable)var ranges = oo[1]/* original data */var data = oo[0]var ws_name = 'SheetJS'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] = wsvar 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)
}
//2003excel
export function export_json_to_excelFapiao(headerList, dataList, defaultTitle, colNum, div) {/* original data */var filterVal = []var tHeader = []for (var i = 0; i < headerList.length; i++) {if (headerList[i].ColumnKey === '') {/* 处理二级列项 */for (var j = 0; j < headerList[i].ColumnChild.length; j++) {tHeader = Boolean(headerList[i].ColumnName.replace(/\s/g, ''))? tHeader.concat(`${headerList[i].ColumnName}(${headerList[i].ColumnChild[j].ColumnName})`): tHeader.concat(headerList[i].ColumnChild[j].ColumnName)filterVal = filterVal.concat(headerList[i].ColumnChild[j].ColumnKey)}/* 处理一级列项 */} else {tHeader = tHeader.concat(headerList[i].ColumnName)filterVal = filterVal.concat(headerList[i].ColumnKey)}}// console.log("dataList",dataList)var data = dataList.map(v => filterVal.map(j => v[j]))data.unshift(tHeader)data.unshift([defaultTitle])if (colNum === undefined) colNum = 1var ws_name = 'SheetJS'var wb = new Workbook(),wsif (div === undefined) {ws = sheet_from_array_of_arrays(data, colNum)} else if (div === 'hmzcjm') {ws = sheet_from_array_of_arrays_hmzcjm(data)} else if (div === 'jmmxb') {var name = localStorage.usernamevar zbdw = localStorage.orgnamedata.splice(1, 0, ['制表单位:' + zbdw + '          ' + '制表人：' + name])ws = sheet_from_array_of_arrays_jmmxb(data)}/* add worksheet to workbook */wb.SheetNames.push(ws_name)wb.Sheets[ws_name] = wsvar 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 + '.xls')
}
export function export_json_to_excel(headerList, dataList, defaultTitle, colNum, div) {/* original data */var filterVal = []var tHeader = []for (var i = 0; i < headerList.length; i++) {if (!headerList[i].ColumnKey) {/* 处理二级列项 */for (var j = 0; j < headerList[i].ColumnChild.length; j++) {tHeader = Boolean(headerList[i].ColumnName.replace(/\s/g, ''))? tHeader.concat(`${headerList[i].ColumnName}(${headerList[i].ColumnChild[j].ColumnName})`): tHeader.concat(headerList[i].ColumnChild[j].ColumnName)filterVal = filterVal.concat(headerList[i].ColumnChild[j].ColumnKey)}} else {/* 处理一级列项 */tHeader = tHeader.concat(headerList[i].ColumnName)filterVal = filterVal.concat(headerList[i].ColumnKey)}}// console.log("dataList",dataList)var data = dataList.map(v => filterVal.map(j => v[j]))data.unshift(tHeader)data.unshift([defaultTitle])if (colNum === undefined) colNum = 1var ws_name = 'SheetJS'var wb = new Workbook(),wsif (div === undefined) {ws = sheet_from_array_of_arrays(data, colNum)} else if (div === 'hmzcjm') {ws = sheet_from_array_of_arrays_hmzcjm(data)} else if (div === 'jmmxb') {var name = localStorage.usernamevar zbdw = localStorage.orgnamedata.splice(1, 0, ['制表单位:' + zbdw + '          ' + '制表人：' + name])ws = sheet_from_array_of_arrays_jmmxb(data)}/* add worksheet to workbook */wb.SheetNames.push(ws_name)wb.Sheets[ws_name] = wsvar 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')
}
export function export_json_to_excel_Merge(headerList, dataList, defaultTitle, colNum, div) {/* original data */var filterVal = []var tHeader = []var tHeader2 = []var ArrMerge = []var numberone = 0var numbertwo = 0headerList.forEach((item, index) => {if (item.ColumnKey === '') {ArrMerge.push({s: { c: numberone + numbertwo, r: 1 },e: { c: numberone + numbertwo + item.ColumnChild.length - 1, r: 1 }})item.ColumnChild.forEach((items, indexs) => {;(tHeader2 = tHeader2.concat(items.ColumnName)),(filterVal = filterVal.concat(items.ColumnKey)),(tHeader = tHeader.concat(item.ColumnName)),numberone++})} else {tHeader2 = tHeader2.concat(item.ColumnName)filterVal = filterVal.concat(item.ColumnKey)tHeader = tHeader.concat(item.ColumnName)numbertwo++ArrMerge.push({ s: { c: numberone + numbertwo - 1, r: 1 }, e: { c: numberone + numbertwo - 1, r: 2 } })}})ArrMerge.unshift({ s: { c: 0, r: 0 }, e: { c: numberone + numbertwo - 1, r: 0 } })var data = dataList.map(v => filterVal.map(j => v[j]))data.unshift(tHeader2)data.unshift(tHeader)data.unshift([defaultTitle])if (colNum === undefined) colNum = 1var ws_name = 'SheetJS'var wb = new Workbook(),wsif (div === undefined) {ws = sheet_from_array_of_arrays(data, colNum)} else if (div === 'mergeheader') {ws = sheet_from_array_of_arrays_mergeheader(data, ArrMerge)} else if (div === 'hmzcjm') {ws = sheet_from_array_of_arrays_hmzcjm(data)} else if (div === 'jmmxb') {var name = localStorage.usernamevar zbdw = localStorage.orgnamedata.splice(1, 0, ['制表单位:' + zbdw + '          ' + '制表人：' + name])ws = sheet_from_array_of_arrays_jmmxb(data)}/* add worksheet to workbook */wb.SheetNames.push(ws_name)wb.Sheets[ws_name] = wsvar 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')
}

在需要使用的地方复制使用

 let headList=[{ColumnAlign: "center",ColumnKey:"a",ColumnName: "测试a",ColumnOrder: "CDHSTATUS",ColumnWidth: 90},{ColumnAlign: "center",ColumnKey:"b",ColumnName: "测试b",ColumnOrder: "CDHSTATUS",ColumnWidth: 90}]let OutDataExcel=[{a:1,b:2....}]let header = '测试表格' //文件名字if (dataList.length === 0) {this.$message.error('无导出数据！')return}require.ensure([], () => {const { export_json_to_excel } = require('@/vendor/Export2Excel')export_json_to_excel(headList, OutDataExcel, header)})

导出的就是正常的Excel文件

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