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小编给大家分享一下vue + element-ui如何实现导入导出功能,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!
前言
众所周知,ElementUI,是一个比较完善的UI库,但是使用它需要有一点vue的基础。在开始本文的正文之前,我们先来看看安装的方法吧。
安装ElementUI模块
cnpm install element-ui -S
在main.js中引入
import ElementUI from 'element-ui' import 'element-ui/lib/theme-default/index.css'
全局安装
Vue.use(ElementUI)
当我们安装完记得重新运行,cnpm run dev
,现在就可以直接使用elementUI了。
vue + element-ui导入导出功能
1.前段后台管理系统中数据展示一般都是用表格,表格会涉及到导入和导出;
2.导入是利用element-ui的Upload 上传组件;
<el-upload class="upload-demo" :action="importUrl"//上传的路径 :name ="name"//上传的文件字段名 :headers="importHeaders"//请求头格式 :on-preview="handlePreview"//可以通过 file.response 拿到服务端返回数据 :on-remove="handleRemove"//文件移除 :before-upload="beforeUpload"//上传前配置 :on-error="uploadFail"//上传错误 :on-success="uploadSuccess"//上传成功 :file-list="fileList"//上传的文件列表 :with-credentials="withCredentials">//是否支持cookie信息发送 </el-upload>
3.导出是利用file的一个对象blob;通过调用后台接口拿到数据,然后用数据来实例化blob,利用a标签的href属性链接到blob对象
export const downloadTemplate = function (scheduleType) { axios.get('/rest/schedule/template', { params: { "scheduleType": scheduleType }, responseType: 'arraybuffer' }).then((response) => { //创建一个blob对象,file的一种 let blob = new Blob([response.data], { type: 'application/x-xls' }) let link = document.createElement('a') link.href = window.URL.createObjectURL(blob) //配置下载的文件名 link.download = fileNames[scheduleType] + '_' + response.headers.datestr + '.xls' link.click() }) }
4.贴上整个小demo的完整代码,在后台开发可以直接拿过去用(vue文件)
<template> <div> <el-table ref="multipleTable" :data="tableData3" tooltip-effect="dark" border @selection-change="handleSelectionChange"> <el-table-column type="selection" width="55"> </el-table-column> <el-table-column label="日期" width="120"> <template slot-scope="scope">{{ scope.row.date }}</template> </el-table-column> <el-table-column prop="name" label="姓名" width="120"> </el-table-column> <el-table-column prop="address" label="地址" show-overflow-tooltip> </el-table-column> </el-table> <div > <el-button @click="toggleSelection([tableData3[1], tableData3[2]])">切换第二、第三行的选中状态</el-button> <el-button @click="toggleSelection()">取消选择</el-button> <el-button type="primary" @click="importData">导入</el-button> <el-button type="primary" @click="outportData">导出</el-button> </div> <!-- 导入 --> <el-dialog title="导入" :visible.sync="dialogImportVisible" :modal-append-to-body="false" :close-on-click-modal="false" class="dialog-import"> <div :class="{'import-content': importFlag === 1, 'hide-dialog': importFlag !== 1}"> <el-upload class="upload-demo" :action="importUrl" :name ="name" :headers="importHeaders" :on-preview="handlePreview" :on-remove="handleRemove" :before-upload="beforeUpload" :on-error="uploadFail" :on-success="uploadSuccess" :file-list="fileList" :with-credentials="withCredentials"> <!-- 是否支持发送cookie信息 --> <el-button size="small" type="primary" :disabled="processing">{{uploadTip}}</el-button> <div slot="tip" class="el-upload__tip">只能上传excel文件</div> </el-upload> <div class="download-template"> <a class="btn-download" @click="download"> <i class="icon-download"></i>下载模板</a> </div> </div> <div :class="{'import-failure': importFlag === 2, 'hide-dialog': importFlag !== 2}" > <div class="failure-tips"> <i class="el-icon-warning"></i>导入失败</div> <div class="failure-reason"> <h5>失败原因</h5> <ul> <li v-for="(error,index) in errorResults" :key="index">第{{error.rowIdx + 1}}行,错误:{{error.column}},{{error.value}},{{error.errorInfo}}</li> </ul> </div> </div> </el-dialog> <!-- 导出 --> </div> </template> <script> import * as scheduleApi from '@/api/schedule' export default { data() { return { tableData3: [ { date: "2016-05-03", name: "王小虎", address: "上海市普陀区金沙江路 1518 弄" }, { date: "2016-05-02", name: "王小虎", address: "上海市普陀区金沙江路 1518 弄" }, { date: "2016-05-04", name: "王小虎", address: "上海市普陀区金沙江路 1518 弄" }, { date: "2016-05-01", name: "王小虎", address: "上海市普陀区金沙江路 1518 弄" }, { date: "2016-05-08", name: "王小虎", address: "上海市普陀区金沙江路 1518 弄" }, { date: "2016-05-06", name: "王小虎", address: "上海市普陀区金沙江路 1518 弄" }, { date: "2016-05-07", name: "王小虎", address: "上海市普陀区金沙江路 1518 弄" } ], multipleSelection: [], importUrl:'www.baidu.com',//后台接口config.admin_url+'rest/schedule/import/' importHeaders:{ enctype:'multipart/form-data', cityCode:'' }, name: 'import', fileList: [], withCredentials: true, processing: false, uploadTip:'点击上传', importFlag:1, dialogImportVisible:false, errorResults:[] }; }, methods: { toggleSelection(rows) { if (rows) { rows.forEach(row => { this.$refs.multipleTable.toggleRowSelection(row); }); } else { this.$refs.multipleTable.clearSelection(); } }, handleSelectionChange(val) { //复选框选择回填函数,val返回一整行的数据 this.multipleSelection = val; }, importData() { this.importFlag = 1 this.fileList = [] this.uploadTip = '点击上传' this.processing = false this.dialogImportVisible = true }, outportData() { scheduleApi.downloadTemplate() }, handlePreview(file) { //可以通过 file.response 拿到服务端返回数据 }, handleRemove(file, fileList) { //文件移除 }, beforeUpload(file){ //上传前配置 this.importHeaders.cityCode='上海'//可以配置请求头 let excelfileExtend = ".xls,.xlsx"//设置文件格式 let fileExtend = file.name.substring(file.name.lastIndexOf('.')).toLowerCase(); if (excelfileExtend.indexOf(fileExtend) <= -1) { this.$message.error('文件格式错误') return false } this.uploadTip = '正在处理中...' this.processing = true }, //上传错误 uploadFail(err, file, fileList) { this.uploadTip = '点击上传' this.processing = false this.$message.error(err) }, //上传成功 uploadSuccess(response, file, fileList) { this.uploadTip = '点击上传' this.processing = false if (response.status === -1) { this.errorResults = response.data if (this.errorResults) { this.importFlag = 2 } else { this.dialogImportVisible = false this.$message.error(response.errorMsg) } } else { this.importFlag = 3 this.dialogImportVisible = false this.$message.info('导入成功') this.doSearch() } }, //下载模板 download() { //调用后台模板方法,和导出类似 scheduleApi.downloadTemplate() }, } }; </script> <style scoped> .hide-dialog{ display:none; } </style>
5.js文件,调用接口
import axios from 'axios' // 下载模板 export const downloadTemplate = function (scheduleType) { axios.get('/rest/schedule/template', { params: { "scheduleType": scheduleType }, responseType: 'arraybuffer' }).then((response) => { //创建一个blob对象,file的一种 let blob = new Blob([response.data], { type: 'application/x-xls' }) let link = document.createElement('a') link.href = window.URL.createObjectURL(blob) link.download = fileNames[scheduleType] + '_' + response.headers.datestr + '.xls' link.click() }) }
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