(精华)2020年7月18日 vue element-ui表格导出Excel文件
安装如下包
npm install xlsx file-saver -S
npm install script-loader -S -D
//AutoWidthOption
<template>
<div style="display:inline-block;">
<label class="radio-label">Cell Auto-Width: </label>
<el-radio-group v-model="autoWidth">
<el-radio :label="true" border>
True
</el-radio>
<el-radio :label="false" border>
False
</el-radio>
</el-radio-group>
</div>
</template>
<script>
export default {
props: {
value: {
type: Boolean,
default: true
}
},
computed: {
autoWidth: {
get() {
return this.value
},
set(val) {
this.$emit('input', val)
}
}
}
}
</script>
//BookTypeOption
<template>
<div style="display:inline-block;">
<label class="radio-label">Book Type: </label>
<el-select v-model="bookType" style="width:120px;">
<el-option
v-for="item in options"
:key="item"
:label="item"
:value="item"
/>
</el-select>
</div>
</template>
<script>
export default {
props: {
value: {
type: String,
default: 'xlsx'
}
},
data() {
return {
options: ['xlsx', 'csv', 'txt']
}
},
computed: {
bookType: {
get() {
return this.value
},
set(val) {
this.$emit('input', val)
}
}
}
}
</script>
//FilenameOption
<template>
<div style="display:inline-block;">
<!-- $t is vue-i18n global function to translate lang -->
<label class="radio-label" style="padding-left:0;">Filename: </label>
<el-input v-model="filename" :placeholder="$t('excel.placeholder')" style="width:350px;" prefix-icon="el-icon-document" />
</div>
</template>
<script>
export default {
props: {
value: {
type: String,
default: ''
}
},
computed: {
filename: {
get() {
return this.value
},
set(val) {
this.$emit('input', val)
}
}
}
}
</script>
//Export2Excel
import {
saveAs } from 'file-saver'
import XLSX from 'xlsx'
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);
}
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]
};
if (cell.v == null) continue;
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);
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] = ws;
var wbout = XLSX.write(wb, {
bookType: 'xlsx',
bookSST: false,
type: 'binary'
});
saveAs(new Blob([s2ab(wbout)], {
type: "application/octet-stream"
}), "test.xlsx")
}
export function export_json_to_excel({
multiHeader = [],
header,
data,
filename,
merges = [],
autoWidth = true,
bookType = 'xlsx'
} = {
}) {
/* original data */
filename = filename || 'excel-list'
data = [...data]
data.unshift(header);
for (let i = multiHeader.length - 1; i > -1; i--) {
data.unshift(multiHeader[i])
}
var ws_name = "SheetJS";
var wb = new Workbook(),
ws = sheet_from_array_of_arrays(data);
if (merges.length > 0) {
if (!ws['!merges']) ws['!merges'] = [];
merges.forEach(item => {
ws['!merges'].push(XLSX.utils.decode_range(item))
})
}
if (autoWidth) {
/*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;
}
/* add worksheet to workbook */
wb.SheetNames.push(ws_name);
wb.Sheets[ws_name] = ws;
var wbout = XLSX.write(wb, {
bookType: bookType,
bookSST: false,
type: 'binary'
});
saveAs(new Blob([s2ab(wbout)], {
type: "application/octet-stream"
}), `${
filename}.${
bookType}`);
}
全部导出
<template>
<!-- $t is vue-i18n global function to translate lang -->
<div class="app-container">
<div>
<FilenameOption v-model="filename" />
<AutoWidthOption v-model="autoWidth" />
<BookTypeOption v-model="bookType" />
<el-button :loading="downloadLoading" style="margin:0 0 20px 20px;" type="primary" icon="el-icon-document" @click="handleDownload">
{
{
$t('excel.export') }} Excel
</el-button>
</div>
<el-table v-loading="listLoading" :data="list" element-loading-text="Loading..." border fit highlight-current-row>
<el-table-column align="center" label="Id" width="95">
<template slot-scope="scope">
{
{
scope.$index }}
</template>
</el-table-column>
<el-table-column label="Title">
<template slot-scope="scope">
{
{
scope.row.title }}
</template>
</el-table-column>
<el-table-column label="Author" width="110" align="center">
<template slot-scope="scope">
<el-tag>{
{
scope.row.author }}</el-tag>
</template>
</el-table-column>
<el-table-column label="Readings" width="115" align="center">
<template slot-scope="scope">
{
{
scope.row.pageviews }}
</template>
</el-table-column>
<el-table-column align="center" label="Date" width="220">
<template slot-scope="scope">
<i class="el-icon-time" />
<span>{
{
scope.row.timestamp | parseTime('{y}-{m}-{d} {h}:{i}') }}</span>
</template>
</el-table-column>
</el-table>
</div>
</template>
<script>
import {
fetchList } from '@/api/article'
import {
parseTime } from '@/utils'
// options components
import FilenameOption from './components/FilenameOption'
import AutoWidthOption from './components/AutoWidthOption'
import BookTypeOption from './components/BookTypeOption'
export default {
name: 'ExportExcel',
components: {
FilenameOption, AutoWidthOption, BookTypeOption },
data() {
return {
list: null,
listLoading: true,
downloadLoading: false,
filename: '',
autoWidth: true,
bookType: 'xlsx'
}
},
created() {
this.fetchData()
},
methods: {
fetchData() {
this.listLoading = true
fetchList().then(response => {
this.list = response.data.items
this.listLoading = false
})
},
handleDownload() {
this.downloadLoading = true
import('@/vendor/Export2Excel').then(excel => {
const tHeader = ['Id', 'Title', 'Author', 'Readings', 'Date']
const filterVal = ['id', 'title', 'author', 'pageviews', 'display_time']
const list = this.list
const data = this.formatJson(filterVal, list)
excel.export_json_to_excel({
header: tHeader,
data,
filename: this.filename,
autoWidth: this.autoWidth,
bookType: this.bookType
})
this.downloadLoading = false
})
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => {
if (j === 'timestamp') {
return parseTime(v[j])
} else {
return v[j]
}
}))
}
}
}
</script>
<style>
选择导出
<template>
<div class="app-container">
<!-- $t is vue-i18n global function to translate lang -->
<el-input v-model="filename" :placeholder="$t('excel.placeholder')" style="width:350px;" prefix-icon="el-icon-document" />
<el-button :loading="downloadLoading" style="margin-bottom:20px" type="primary" icon="el-icon-document" @click="handleDownload">
{
{
$t('excel.selectedExport') }}
</el-button>
<el-table
ref="multipleTable"
v-loading="listLoading"
:data="list"
element-loading-text="拼命加载中"
border
fit
highlight-current-row
@selection-change="handleSelectionChange"
>
<el-table-column type="selection" align="center" />
<el-table-column align="center" label="Id" width="95">
<template slot-scope="scope">
{
{
scope.$index }}
</template>
</el-table-column>
<el-table-column label="Title">
<template slot-scope="scope">
{
{
scope.row.title }}
</template>
</el-table-column>
<el-table-column label="Author" width="110" align="center">
<template slot-scope="scope">
<el-tag>{
{
scope.row.author }}</el-tag>
</template>
</el-table-column>
<el-table-column label="Readings" width="115" align="center">
<template slot-scope="scope">
{
{
scope.row.pageviews }}
</template>
</el-table-column>
<el-table-column align="center" label="PDate" width="220">
<template slot-scope="scope">
<i class="el-icon-time" />
<span>{
{
scope.row.display_time }}</span>
</template>
</el-table-column>
</el-table>
</div>
</template>
<script>
import {
fetchList } from '@/api/article'
export default {
name: 'SelectExcel',
data() {
return {
list: null,
listLoading: true,
multipleSelection: [],
downloadLoading: false,
filename: ''
}
},
created() {
this.fetchData()
},
methods: {
fetchData() {
this.listLoading = true
fetchList(this.listQuery).then(response => {
this.list = response.data.items
this.listLoading = false
})
},
handleSelectionChange(val) {
this.multipleSelection = val
},
handleDownload() {
if (this.multipleSelection.length) {
this.downloadLoading = true
import('@/vendor/Export2Excel').then(excel => {
const tHeader = ['Id', 'Title', 'Author', 'Readings', 'Date']
const filterVal = ['id', 'title', 'author', 'pageviews', 'display_time']
const list = this.multipleSelection
const data = this.formatJson(filterVal, list)
excel.export_json_to_excel({
header: tHeader,
data,
filename: this.filename
})
this.$refs.multipleTable.clearSelection()
this.downloadLoading = false
})
} else {
this.$message({
message: 'Please select at least one item',
type: 'warning'
})
}
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
}
}
}
</script>
多级表头
<template>
<div class="app-container">
<el-button :loading="downloadLoading" style="margin-bottom:20px" type="primary" icon="el-icon-document" @click="handleDownload">Export</el-button>
<el-table
ref="multipleTable"
v-loading="listLoading"
:data="list"
element-loading-text="Loading"
border
fit
highlight-current-row
>
<el-table-column align="center" label="Id" width="95">
<template slot-scope="scope">
{
{
scope.$index }}
</template>
</el-table-column>
<el-table-column label="Main Information" align="center">
<el-table-column label="Title">
<template slot-scope="scope">
{
{
scope.row.title }}
</template>
</el-table-column>
<el-table-column label="Author" width="110" align="center">
<template slot-scope="scope">
<el-tag>{
{
scope.row.author }}</el-tag>
</template>
</el-table-column>
<el-table-column label="Readings" width="115" align="center">
<template slot-scope="scope">
{
{
scope.row.pageviews }}
</template>
</el-table-column>
</el-table-column>
<el-table-column align="center" label="Date" width="220">
<template slot-scope="scope">
<i class="el-icon-time" />
<span>{
{
scope.row.timestamp | parseTime('{y}-{m}-{d} {h}:{i}') }}</span>
</template>
</el-table-column>
</el-table>
</div>
</template>
<script>
import {
fetchList } from '@/api/article'
import {
parseTime } from '@/utils'
export default {
name: 'MergeHeader',
data() {
return {
list: null,
listLoading: true,
downloadLoading: false
}
},
created() {
this.fetchData()
},
methods: {
fetchData() {
this.listLoading = true
fetchList(this.listQuery).then(response => {
this.list = response.data.items
this.listLoading = false
})
},
handleDownload() {
this.downloadLoading = true
import('@/vendor/Export2Excel').then(excel => {
const multiHeader = [['Id', 'Main Information', '', '', 'Date']]
const header = ['', 'Title', 'Author', 'Readings', '']
const filterVal = ['id', 'title', 'author', 'pageviews', 'display_time']
const list = this.list
const data = this.formatJson(filterVal, list)
const merges = ['A1:A2', 'B1:D1', 'E1:E2']
excel.export_json_to_excel({
multiHeader,
header,
merges,
data
})
this.downloadLoading = false
})
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => {
if (j === 'timestamp') {
return parseTime(v[j])
} else {
return v[j]
}
}))
}
}
}
</script>