首先当然就是下载相关的npm包了
npm install --save file-save xlsx
npm install --save script-loader
然后我是在utils下面创建了一个用于存放关于这部分功能的文件夹
然后接下来就是代码了
//excel.js
import { export_json_to_excel } from './Export2Excel'
export function downloadFile (url) {
try {
var elemIF = document.createElement('iframe')
elemIF.src = url
elemIF.style.display = 'none'
document.body.appendChild(elemIF)
} catch (e) {
console.error(e)
}
}
// 导出excel 表格 tabHeader 表头 tabFilterVal 过滤的字段 tabList 数据集合
export function exportExcels (tabHeader, tabFilterVal, tabList, fileName = Math.random() * 100) {
const data = formatJson(tabFilterVal, tabList)
export_json_to_excel({
header: tabHeader,
data,
filename: fileName
})
function formatJson (filterVal, tableData) {
return tableData.map(v => {
return filterVal.map(j => {
return v[j]
})
})
}
}
修改单元格需要修改Export2Excel.js的代码,具体写在备注里了
//Export2Excel.js
/* eslint-disable */
import {saveAs} from 'file-saver'
import {SSF,utils,write} 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 = 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 = SSF._table[14];
cell.v = datenum(cell.v);
} else cell.t = 's';
ws[cell_ref] = cell;
}
}
if (range.s.c < 10000000) ws['!ref'] = 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 = 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 ({
header,
data,
filename,
autoWidth = true,
bookType = 'xlsx'
} = {}) {
/* original data */
filename = filename || 'excel-list'
data = [...data]
data.unshift(header);
var ws_name = "SheetJS";
var wb = new Workbook(),
ws = sheet_from_array_of_arrays(data);
if (autoWidth) {
/*设置worksheet每列的最大宽度*/
const colWidth = data.map(row => row.map(val => {
/*val值为你设置的表头也就是你的tagHeader*/
/*先判断是否为null/undefined*/
if (val == null) {
return {
/*如果为空单元格的宽度就是10*/
'wch': 10
};
}
/*再判断是否为中文*/
else if (val.toString().charCodeAt(0) > 255) {
return {
/*如果你的表头为中文,单元格宽度就是你字符串长度的两倍*/
/*如果你的表头为中文就可以设置这里wch的值*/
'wch': val.toString().length * 2
};
} else {
return {
/*如果你的表头为英文,单元格宽度就是你字符串长度*/
/*如果你的表头为英文就可以设置这里wch的值*/
'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 = write(wb, {
bookType: bookType,
bookSST: false,
type: 'binary'
});
saveAs(new Blob([s2ab(wbout)], {
type: "application/octet-stream"
}), `${filename}.${bookType}`);
}
//导出的excel数据 如果只想要模板不想里面有数据可以不创建此文件或者导出的数据字段都为空也行
//模板数据
export const templateData = [
{
name:'',
jobNumber:'',
phone:'',
email:'',
}
]
然后就在你要写这个功能的页面引入相关的方法
import { exportExcels } from '@/utils/excelTemplate/excel'
import {templateData} from '@/utils/excelTemplate/templateData'
引入完成之后直接在你的页面给你的事件绑定这个方法就ok,如果你想要里面有数据的话可以把exportExcels这个方法的第三个参数改成引入的templateData的数据就行,我这里只想要模板,所以就没有用,直接就是一个空数组了
const downExcelTemplate = () => {
const tagHeader = ['员工名称', '员工工号', '手机号', '邮箱']
const tagFilterVal = ['name', 'jobNumber', 'phone', 'email']
exportExcels(tagHeader,tagFilterVal,[],'员工表')
}
至此就结束了,网上也搜了很多方法不知道为啥报错,感觉可能是因为我用的vue3的原因,然后就拿了一些自己再改改就ok了
这是最后生成的效果图