react antd table 复杂表头合并 单元格合并

 

参考网址：

https://www.cnblogs.com/ajaemp/p/12880847.html

https://docs.sheetjs.com/docs/getting-started/installation/nodejs

https://www.jianshu.com/p/7bfe4dcdb43b

https://blog.csdn.net/qq_33430445/article/details/106349858

https://zhuanlan.zhihu.com/p/215713923

 

 

import XLSXfrom 'xlsx';

// 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);
}



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);
sheet['!merges'] = [
    // 设置A1-C1的单元格合并
    {s: {r: 0, c: 0}, e: {r: 0, c: 2}}
];
openDownloadDialog(sheet2blob(sheet), '单元格合并示例.xlsx');