vue+element 使用Export2Excel导出表格组件
下载表格组件是根据我自己的业务需求来封装的
使用的是vue中 xlsx 的插件，需要安装新的依赖及配置
仅供参考 不保证和你百分百匹配
安装依赖
npm install -S file-saver xlsx
npm install -D script-loader
下载所需js
链接: https://pan.baidu.com/s/170okRAPiWxQrBvlDEpp7SQ 提取码: gsf5
百度网盘真特喵的是个好东西啊
因为我的子组件引用了该js 如果你不想自己再修改位置，可以跟我一样，
在src中，建立excel文件，将下载的js扔进去
组件调用
直接说调用部分，文章最后会把组件的代码贴出来
父组件引入子组件
import exportTable from ‘@/components/common/exportTable’;
……
components:{
exportTable
}
父组件调用子组件
<export-table ref=“childRefName“ :export-prepare.sync=“exportPrepare“ :list-query.sync=“listQuery“></export-table>
参数详解
exportPrepare:{
percentage: 0, //导出数据完成的百分比
name:'消耗记录',//导出表格名称
pageType:'pagination',//导出数据获取方式：offset为偏移量、pagination为分页 默认值为pagination
limit:200,//单页数据数量 最大值为200 超过200 按200读取（自定义）或 perPage: 200（根据接口参数决定使用limit/perPage，暂时仅支持limit/perPage）
total:0,//导出数据总数
json_fields: { // excel 表头（具体名称根据实际情况而定）
'耗材编号': 'String',
'耗材品牌': 'String',
'耗材类型': 'String',
'耗材名称': 'String',
'规格型号': 'String',
'耗材属性': 'String',
'耗材价格': 'Number',
'消耗类型': 'String',
'消耗地点': 'String',
'出库仓': 'String',
'目标设备': 'String',
'操作人': 'String',
'操作时间': 'String'
},
json_relationship:{ //导出数据对应的字段名称（具体字段根据实际情况而定 key值与表头保持一致）
'耗材编号': 'supplies_number',
'耗材品牌': 'brand_name',
'耗材类型': 'type',
'耗材名称': 'supplies_name',
'规格型号': 'spec_name',
'耗材属性': 'spec_attribute',
'耗材价格': 'cost',
'消耗类型': 'supplies_type',
'消耗地点': 'out_address',
'出库仓': 'warehouse_name',
'目标设备': 'device_id',
'操作人': 'staff_name',
'操作时间': 'updated_at'
},
param:{},//获取导引数据接口所需的参数
dataList:[]
}
注：json_relationship的值一定与json_fields的值保持一致，否则导出的表会出现空表的问题
listQuery: { // 列表请求数据
where: {},//where是我的接口用到的筛选数据的条件 没有可以直接去掉
page: 1,
limit: 20
}
注：子组件导出数据时页码，会引起父页面修改exportPrepare的param的page、limit参数，使用listQuery进行独立数据深拷贝，子组件的参数变化就不会引起父页面的变化
页面处理导出数据
父组件内获取导出数据的方法
getExcelData(){
this.$refs.exportExcel.index+=1;
if(this.$refs.exportExcel.index<this.$refs.exportExcel.params.length) {
suppliesWaitInExcelData( this.$refs.exportExcel.params[this.$refs.exportExcel.index]).then((response) => {
const data = this.data_ext ? response[this.data_ext].data : response.data;
//data的值，需要根据实际的response数据格式进行赋值
const relationship = this.exportPrepare.json_relationship;
for (let i in data) {
var item = {};
for (let attr in relationship) {
item[attr] = !data[i][relationship[attr]] && data[i][relationship[attr]] !== 0 ? '' : data[i][relationship[attr]];
}
this.exportPrepare.dataList.push(item);
}
this.exportPrepare.percentage = Number((this.exportPrepare.dataList.length / this.exportPrepare.total*100).toFixed(0)) || 0;
this.getExcelData();
})
.catch(e=>{//这里是处理接口获取失败的情况 => 重新执行该条 知道走通（不需要可以把这个部分清空）
console.log('失败了')
this.$refs.exportExcel.index-=1;
this.getExcelData();
})
}
}
注：getExcelData：为固定方法名称，不可以自定义（子组件内有调用 除非两者保持一致）
suppliesWaitInExcelData：获取导出数据的接口api名称，根据具体项目需求更换（接口封装方法不同，调用api方法不同，请根据实际情况修改）
子组件封装
注：子组件中用到this.$parents.doSomeThing()的方式去寻找父组件的方法，所以子组件不能被包裹在别的组件中（包括ele、el-row等element或自定义组件），否则会因为父组件层级问题，找不到对应的父组件方法
或者根据具体情况修改子组件内的方法 ex:this.$parents.$parents.doSomeThing() 多找一层parent 有可能会找到 但是不推荐
<template>
<div id="export-excel">
<el-button type="primary" icon="document" class="export-btn" @click="init">导出数据</el-button>
<el-dialog title="导出" :visible.sync="form.dialogFormVisible" size="tiny" :before-close="handleClose">
<div class="prev-btn right">
<el-progress :percentage="exportPrepare.percentage" style="margin-bottom: 20px;"></el-progress>
<p style="color:#F56C6C;font-size:12px;" v-show="exportTips">数据量过大，推荐选择精确数据下载</p>
<el-button type="primary" @click="exportAction" v-if="exportPrepare.total == exportPrepare.dataList.length">导出</el-button>
<el-button type="primary" class="cancel-action" v-else>导出</el-button>
<el-button @click="handleClose">取消</el-button>
</div>
</el-dialog>
</div>
</template>
<script type="application/ecmascript">
export default {
name: "export-excel",
props: {
exportPrepare: {
type: Object
},
listQuery: {
type: Object
}
},
data() {
return {
params: [],
paramsItem: {},
index: -1,
// 导出表单所需数据对象
form: {
loading: false,
dialogFormVisible: false,
},
pageType: 'pagination', //获取数据方式 pagination为分页方式 offset为偏移量方式
json_meta: [ // 设置字符集
[{
key: "charset",
value: "utf-8"
}]
], // excel表头
json_data: [], // 要导出的数据
dataList: [], // 要导出的数据
button_text: '', // 导出按钮名称
data_ext: '', // 数据后缀 防止返回的数据格式不是[obj, obj...]
childExportPrepare:{},
exportTips:false,//数据过大提示
};
},
mounted() {
this.pageType = this.exportPrepare.pageType || 'pagination'
this.childExportPrepare = JSON.parse(JSON.stringify(this.listQuery))
},
watch: {
listQuery(newValue, oldValue) {
this.childExportPrepare = JSON.parse(JSON.stringify(this.listQuery))
}
},
methods: {
// 导出初始化
init() {
this.form.dialogFormVisible = true;
this.data_ext = this.exportPrepare.data_ext || '';
this.fetchExportList();
},
// 数据列表分次获取
fetchExportList() {
this.childExportPrepare = JSON.parse(JSON.stringify(this.listQuery))
this.exportPrepare.dataList = [];
this.index = -1;
this.params = [];
this.exportPrepare.percentage = 0;
this.json_data = [];
if (this.pageType == 'offset') {
if(this.exportPrepare.limit){
if (this.exportPrepare.total > this.exportPrepare.limit) {
this.json_data = [];
let param = {}
param = this.childExportPrepare
for (let i = 0; i < Math.ceil(this.exportPrepare.total / this.exportPrepare.limit); i++) {
if(i>=20){
this.exportTips = true;
}else{
this.exportTips = false;
}
if(this.exportPrepare.limit>200){
this.exportPrepare.limit = 200;
}
var startPage = 0,
endlimit = 0;
startPage = i * this.exportPrepare.limit;
this.$set(param,'page',startPage)
endlimit = this.exportPrepare.limit;
if (i >= Math.ceil(this.exportPrepare.total / this.exportPrepare.limit) - 1 && this.exportPrepare.total % this.exportPrepare.limit != 0) {
endlimit = this.exportPrepare.total % this.exportPrepare.limit
}
this.$set(param,'limit',endlimit)
let paramList = {page:param.page,limit:param.limit};
this.form.loading = true;
this.params.push(Object.assign(paramList,this.childExportPrepare));
}
this.$parent.$parent.getExcelData()
this.json_data = this.exportPrepare.dataList;
} else {
this.json_data = [];
this.params = [];
this.childExportPrepare.page = 0;
this.childExportPrepare.limit = this.exportPrepare.total;
let param = [];
param.page = 0;
param.limit = this.exportPrepare.total;
let paramList = {page:param.page,limit:param.limit};
this.params.push(Object.assign(paramList,this.childExportPrepare));
this.form.loading = true;
this.$parent.$parent.getExcelData();
this.json_data = this.exportPrepare.dataList;
}
}else{
if (this.exportPrepare.total > this.exportPrepare.perPage) {
this.json_data = [];
let param = {};
param = this.childExportPrepare
for (let i = 0; i < Math.ceil(this.exportPrepare.total / this.exportPrepare.perPage); i++) {
if(i>=20){
this.exportTips = true;
}else{
this.exportTips = false;
}
if(this.exportPrepare.perPage>200){
this.exportPrepare.perPage = 200;
}
var startPage = 0,
endlimit = 0;
startPage = i * this.exportPrepare.perPage;
this.$set(param,'page',startPage)
endlimit = this.exportPrepare.perPage;
if (i >= Math.ceil(this.exportPrepare.total / this.exportPrepare.perPage) - 1 && this.exportPrepare.total % this.exportPrepare.perPage != 0) {
endlimit = this.exportPrepare.total % this.exportPrepare.perPage
}
this.$set(param,'perPage',endlimit)
let paramList = {page:param.page,perPage:param.perPage};
this.form.loading = true;
this.params.push(Object.assign(paramList,this.childExportPrepare));
}
this.$parent.$parent.getExcelData()
this.json_data = this.exportPrepare.dataList;
} else {
this.json_data = [];
this.params = [];
this.childExportPrepare.page = 0;
this.childExportPrepare.limit = this.exportPrepare.total;
let param = [];
param.page = 0;
param.perPage = this.exportPrepare.total;
let paramList = {page:param.page,perPage:param.perPage};
this.params.push(Object.assign(paramList,this.childExportPrepare));
this.form.loading = true;
this.$parent.$parent.getExcelData();
this.json_data = this.exportPrepare.dataList;
}
}
} else {
if(this.exportPrepare){
if (this.exportPrepare.total > this.exportPrepare.limit) {
this.json_data = [];
let param = {}
param = this.childExportPrepare
for (let i = 0; i < Math.ceil(this.exportPrepare.total / this.exportPrepare.limit); i++) {
if(i>=20){
this.exportTips = true;
}else{
this.exportTips = false;
}
if(this.exportPrepare.limit>200){
this.exportPrepare.limit = 200;
}
let startPage = 0, endlimit = 0;
startPage = i + 1;
this.$set(param,'page',startPage)
endlimit = this.exportPrepare.limit;
if (i >= Math.ceil(this.exportPrepare.total / this.exportPrepare.limit) - 1 && this.exportPrepare.total % this.exportPrepare.limit != 0) {
endlimit = this.exportPrepare.total % this.exportPrepare.limit
}
this.$set(param,'limit',endlimit)
let paramList = {page:param.page,limit:param.limit};
this.form.loading = true;
this.params.push(Object.assign(paramList,this.childExportPrepare));
}
this.$parent.$parent.getExcelData()
this.json_data = this.exportPrepare.dataList;
} else {
this.json_data = [];
this.params = [];
this.childExportPrepare.page = 1;
this.childExportPrepare.limit = this.exportPrepare.total;
let param = [];
param.page = 1;
param.limit = this.exportPrepare.total;
let paramList = {page:param.page,limit:param.limit};
this.params.push(Object.assign(paramList,this.childExportPrepare));
this.form.loading = true;
this.$parent.$parent.getExcelData();
this.json_data = this.exportPrepare.dataList;
}
}else{
if (this.exportPrepare.total > this.exportPrepare.perPage) {
this.json_data = [];
let param = {}
param = this.childExportPrepare
for (let i = 0; i < Math.ceil(this.exportPrepare.total / this.exportPrepare.perPage); i++) {
if(i>=20){
this.exportTips = true;
}else{
this.exportTips = false;
}
if(this.exportPrepare.perPage>200){
this.exportPrepare.perPage = 200;
}
var startPage = 0,
endlimit = 0;
startPage = i + 1;
this.$set(param,'page',startPage)
endlimit = this.exportPrepare.perPage;
if (i >= Math.ceil(this.exportPrepare.total / this.exportPrepare.perPage) - 1 && this.exportPrepare.total % this.exportPrepare.perPage != 0) {
endlimit = this.exportPrepare.total % this.exportPrepare.perPage
}
this.$set(param,'perPage',endlimit)
let paramList = {page:param.page,perPage:param.perPage};
this.form.loading = true;
this.params.push(Object.assign(paramList,this.childExportPrepare));
}
this.$parent.$parent.getExcelData()
this.json_data = this.exportPrepare.dataList;
} else {
this.json_data = [];
this.params = [];
this.childExportPrepare.page = 1;
this.childExportPrepare.limit = this.exportPrepare.total;
let param = [];
param.page = 1;
param.perPage = this.exportPrepare.total;
let paramList = {page:param.page,perPage:param.perPage};
this.params.push(Object.assign(paramList,this.childExportPrepare));
this.form.loading = true;
this.$parent.$parent.getExcelData();
this.json_data = this.exportPrepare.dataList;
}
}
}
},
//导出
exportAction() {
if (this.exportPrepare.total == this.json_data.length) {
require.ensure([], () => {
const {
export_json_to_excel
} = require('../../excel/Export2Excel');
const tHeader = [];
for (let i in this.exportPrepare.json_fields) {
tHeader.push(i);
}
if (this.json_data.length < 1) {
this.fetchExportList();
return
}
const list = this.json_data;
const data = this.formatJson(tHeader, list);
export_json_to_excel(tHeader, data, this.exportPrepare.name || '导出数据');
this.form.loading = true;
setTimeout(() => {
this.form.loading = false;
this.$notify({
title: '成功',
message: '导出成功',
type: 'success',
duration: 1500
});
this.form.dialogFormVisible = false;
this.json_data = [];
this.dataList = [];
this.exportPrepare.dataList = [];
}, 500);
})
}
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
},
// 关闭导出对话框
handleClose() {
this.form.dialogFormVisible = false;
this.exportPrepare.dataList = [];
this.json_data = [];
this.dataList = [];
this.params = [];
this.exportPrepare.percentage = 0;
}
}
}
</script>
<style scoped="scoped" lang="scss">
.cancel-action {
opacity: .4;
}
.right {
text-align: right;
}
#export-excel{
float: right;
}
</style>
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