node.js中使用node-xlsx插件生成excel数据并导出

1.安装node-xlsx

npm install node-xlsx

2.引入模块

var xlsx = require('node-xlsx');
var fs = require('fs');

3.代码

router.get('/export.html',function(req,res){
    billModel.find().exec(function(err,data){
        var datas=[];
        var title = ['客户名称','项目名称','设备名称']//这是第一行 俗称列名
        datas.push(title);
        data.forEach((element) => {
            var arrInner = [];
            arrInner.push(element.companyName);
            arrInner.push(element.companyName);
            arrInner.push(element.projectName);
            arrInner.push(element.ccc);
            
            datas.push(arrInner);//data中添加的要是数组，可以将对象的值分解添加进数组，例如：['1','name','上海']
        });
        var name='应付账款明细'+GetDateStr()+'.xlsx';            
        writeExcel(name,datas);
        res.download('./public/bill/'+name);
    });
});

function writeExcel(name,data){
    var buffer=xlsx.build([{name:'sheet1',data:data}]);
    fs.writeFileSync('./public/bill/'+name+'.xlsx',buffer,{'flag':'w'});
}

function GetDateStr(){
    return new Date().toLocaleDateString();
}