<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title>JS读取和导出excel示例</title>
<meta name="description" content="使用sheetjs读取和导出excel示例">
<style type="text/css">
table {
border-collapse: collapse;
}
th,
td {
border: solid 1px #6D6D6D;
padding: 5px 10px;
}
.mt-sm {
margin-top: 8px;
}
body {
background: #f4f4f4;
padding: 0;
margin: 0;
}
.container {
margin: 0 100px;
background: #fff;
padding: 20px;
min-height: 100vh;
}
</style>
</head>
<body>
<div class="container">
<h2>读取excel（仅读取第一个sheet）</h2>
<div class="mt-sm">
<input type="file" multiple="multiple" id="file" style="display:none;" accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" />
<a href="javascript:selectFile()">加载本地excel文件</a>
<a href="javascript:loadRemoteFile('./js/01.xlsx')">加载远程excel文件</a>
</div>
<p>结果输出：（下面表格可直接编辑导出）</p>
<div id="result" contenteditable></div>
<h2>导出excel</h2>
<div class="mt-sm" style="padding-bottom:40px;">
<input type="button" onclick="exportExcel()" value="保存" /> 上面读取的表格您可以直接编辑，编辑后点击保存即可导出excel文件。
</div>
<h2>导出带单元格合并的excel</h2>
<input type="button" value="导出" onclick="exportSpecialExcel()" />
</div>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/xlsx.core.min.js"></script>
<script type="text/javascript">
function selectFile() {
document.getElementById('file').click();
}
// 读取本地excel文件
function readWorkbookFromLocalFile(file, callback) {
var reader = new FileReader();
reader.onload = function(e) {
var data = e.target.result;
var workbook = XLSX.read(data, {
type: 'binary'
});
if (callback) callback(workbook);
};
reader.readAsBinaryString(file);
}
// 从网络上读取某个excel文件，url必须同域，否则报错
function readWorkbookFromRemoteFile(url, callback) {
var xhr = new XMLHttpRequest();
xhr.open('get', url, true);
xhr.responseType = 'arraybuffer';
xhr.onload = function(e) {
if (xhr.status == 200) {
var data = new Uint8Array(xhr.response)
var workbook = XLSX.read(data, {
type: 'array'
});
if (callback) callback(workbook);
}
};
xhr.send();
}
// 读取 excel文件
function outputWorkbook(workbook) {
var sheetNames = workbook.SheetNames; // 工作表名称集合
sheetNames.forEach(name => {
var worksheet = workbook.Sheets[name]; // 只能通过工作表名称来获取指定工作表
for (var key in worksheet) {
// v是读取单元格的原始值
console.log(key, key[0] === '!' ? worksheet[key] : worksheet[key].v);
}
});
}
// 读取表格数据并转换渲染
function readWorkbook(workbook) {
var sheetNames = workbook.SheetNames; // 工作表名称集合
var worksheet = workbook.Sheets[sheetNames[0]]; // 这里我们只读取第一张sheet
var csv = XLSX.utils.sheet_to_csv(worksheet); //转换成csv数据格式
document.getElementById('result').innerHTML = csv2table(csv); //csv转换表格
}
// 将csv转换成表格
function csv2table(csv) {
var html = '<table>';
var rows = csv.split('\n');
rows.pop(); // 最后一行没用的
rows.forEach(function(row, idx) {
var columns = row.split(',');
columns.unshift(idx + 1); // 添加行索引
if (idx == 0) { // 添加列索引
html += '<tr>';
for (var i = 0; i < columns.length; i++) {
html += '<th>' + (i == 0 ? '' : String.fromCharCode(65 + i - 1)) + '</th>';
}
html += '</tr>';
}
html += '<tr>';
columns.forEach(function(column) {
html += '<td>' + column + '</td>';
});
html += '</tr>';
});
html += '</table>';
return html;
}
function table2csv(table) {
var csv = [];
$(table).find('tr').each(function() {
var temp = [];
$(this).find('td').each(function() {
temp.push($(this).html());
})
temp.shift(); // 移除第一个
csv.push(temp.join(','));
});
csv.shift();
return csv.join('\n');
}
// csv转sheet对象
function csv2sheet(csv) {
var sheet = {}; // 将要生成的sheet
csv = csv.split('\n');
csv.forEach(function(row, i) {
row = row.split(',');
if (i == 0) sheet['!ref'] = 'A1:' + String.fromCharCode(65 + row.length - 1) + (csv.length - 1);
row.forEach(function(col, j) {
sheet[String.fromCharCode(65 + j) + (i + 1)] = {
v: col
};
});
});
return sheet;
}
// 将一个sheet转成最终的excel文件的blob对象，然后利用URL.createObjectURL下载
function sheet2blob(sheet, sheetName) {
sheetName = sheetName || 'sheet1';
var workbook = {
SheetNames: [sheetName],
Sheets: {}
};
workbook.Sheets[sheetName] = sheet;
// 生成excel的配置项
var wopts = {
bookType: 'xlsx', // 要生成的文件类型
bookSST: false, // 是否生成Shared String Table，官方解释是，如果开启生成速度会下降，但在低版本IOS设备上有更好的兼容性
type: 'binary'
};
var wbout = XLSX.write(workbook, wopts);
var blob = new Blob([s2ab(wbout)], {
type: "application/octet-stream"
});
// 字符串转ArrayBuffer
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;
}
return blob;
}
/**
* 通用的打开下载对话框方法，没有测试过具体兼容性
* @param url 下载地址，也可以是一个blob对象，必选
* @param saveName 保存文件名，可选
*/
function openDownloadDialog(url, saveName) {
if (typeof url == 'object' && url instanceof Blob) {
url = URL.createObjectURL(url); // 创建blob地址
}
var aLink = document.createElement('a');
aLink.href = url;
aLink.download = saveName || ''; // HTML5新增的属性，指定保存文件名，可以不要后缀，注意，file:///模式下不会生效
var event;
if (window.MouseEvent) event = new MouseEvent('click');
else {
event = document.createEvent('MouseEvents');
event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
}
aLink.dispatchEvent(event);
}
$(function() {
document.getElementById('file').addEventListener('change', function(e) {
var files = e.target.files;
if (files.length == 0) return;
var f = files[0];
console.log(files)
if (!/\.xlsx$/g.test(f.name)) {
alert('仅支持读取xlsx格式！');
return;
}
readWorkbookFromLocalFile(f, function(workbook) {
console.log(workbook)
readWorkbook(workbook);
});
});
// loadRemoteFile('./js/01.xlsx');
});
// 加载远程文件
function loadRemoteFile(url) {
readWorkbookFromRemoteFile(url, function(workbook) {
readWorkbook(workbook);
});
}
// 导出
function exportExcel() {
var csv = table2csv($('#result table')[0]);
var sheet = csv2sheet(csv);
console.log(sheet)
var blob = sheet2blob(sheet);
// openDownloadDialog(blob, '导出.xlsx');
}
// 导出带合并表格
function exportSpecialExcel() {
var aoa = [
['主要信息', null, null, '其它信息'], // 特别注意合并的地方后面预留2个null
['姓名', '性别', '年龄', '注册时间'],
['张三', '男', 18, new Date()],
['李四', '女', 22, new Date()]
];
var sheet = XLSX.utils.aoa_to_sheet(aoa);
// var csv = table2csv($('#result table')[0]);
// var sheet = csv2sheet(csv);
sheet['!merges'] = [
// 设置A1-C1的单元格合并
{
s: {
r: 0,
c: 0
},
e: {
r: 0,
c: 2
}
},
];
console.log(sheet)
openDownloadDialog(sheet2blob(sheet), '单元格合并示例.xlsx');
}
</script>
</body>
</html>