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最近要实现一个功能，大概就是前端读取excel 文件，excel内容展示在页面上，用户确认无误后再上传至后端，使用的XLSX来解析excel,读取日期的时候是数字，解决这个问题花了蛮久时间，记录一下
xlsx 官方github
1.首先要 安装 XLSX
npm install xlsx
npm install moment2.再导入
import XLSX from 'xlsx'
import moment from 'moment'3.用的是element-ui 的 el-upload组件上传，绑定upload
upload (file, fileList) {let files = {0: file.raw}this.readExcel1(files)}4.读取excel，日期格式需要加上 cellDates: true 参数， el-table-column 需要显示的时候也要格式化
readExcel1 (files) {// console.log(files)if (files.length <= 0) {return false} else if (!/\.(xls|xlsx)$/.test(files[0].name.toLowerCase())) {this.$Message.error('上传格式不正确，请上传xls或者xlsx格式')return false}const fileReader = new FileReader()fileReader.onload = (ev) => {try {const data = ev.target.resultconst workbook = XLSX.read(data, {type: 'binary',cellDates: true})const wsname = workbook.SheetNames[0]// 取第一张表const ws = XLSX.utils.sheet_to_json(workbook.Sheets[wsname])// 生成json表格内容this.list = ws} catch (e) {return false}}fileReader.readAsBinaryString(files[0])}<el-table-column :formatter="dateFormat" align="center" label="日期" prop="日期" />dateFormat: function (row, column) {var date = row[column.property]if (date === undefined) {return ''}return moment(date).format('YYYY-MM-DD')}最后附在所有代码
<template><div class="app-container"><!-- 查询和其他操作 --><el-uploadclass="upload-demo"ref="upload":action=uploadUrl():on-preview="handlePreview":on-remove="handleRemove":on-success="handleAvatarSuccess":on-change="upload"accept=".xlsx":file-list="fileList":auto-upload="false"><el-button slot="trigger" size="small" type="primary">选取文件</el-button><el-button style="margin-left: 10px;" size="small" type="success" @click="submitUpload">上传到服务器</el-button><div slot="tip" class="el-upload__tip">只能上传xlsx文件,选取文件确认无误后点击上传服务器</div></el-upload><!-- 查询结果 --><el-table v-loading="listLoading" :data="list" element-loading-text="正在查询中。。。" border size="mini" highlight-current-row><el-table-column :formatter="dateFormat" align="center" label="日期" prop="日期" /><el-table-column align="center" label="应用名称" prop="应用名称" /><el-table-column align="center" label="广告id" prop="广告id" /><el-table-column align="center" label="广告源" prop="广告源" /><el-table-column align="center" label="收入金额" prop="收入金额"/><el-table-column align="center" label="广告触发类型" prop="广告触发类型"/></el-table></div>
</template><script>
import XLSX from 'xlsx'
import moment from 'moment'
export default {name: 'importAdIncome',data () {return {fileList: [],downloadLoading: false,listLoading: false,list: []}},created () {},methods: {submitUpload () {this.$refs.upload.submit()},handleRemove (file, fileList) {// console.log(file, fileList)},handlePreview (file) {// console.log(file)},handleAvatarSuccess (response, file, fileList) {// console.log(response)if (response && response.code === '200') {this.$notify.success({title: '成功',message: '导入成功'})}},upload (file, fileList) {let files = {0: file.raw}this.readExcel1(files)},readExcel1 (files) {// console.log(files)if (files.length <= 0) {return false} else if (!/\.(xls|xlsx)$/.test(files[0].name.toLowerCase())) {this.$Message.error('上传格式不正确，请上传xls或者xlsx格式')return false}const fileReader = new FileReader()fileReader.onload = (ev) => {try {const data = ev.target.resultconst workbook = XLSX.read(data, {type: 'binary',cellDates: true})const wsname = workbook.SheetNames[0]// 取第一张表const ws = XLSX.utils.sheet_to_json(workbook.Sheets[wsname])// 生成json表格内容this.list = ws} catch (e) {return false}}fileReader.readAsBinaryString(files[0])},uploadUrl () {return process.env.BASE_API + '/upload/importIncomeExcel'},dateFormat: function (row, column) {var date = row[column.property]if (date === undefined) {return ''}return moment(date).format('YYYY-MM-DD')}}
}
</script><style scoped>
</style>
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