最近同事在用java讀取xlsx文件遇到困難，說是什么表格他復(fù)雜之類的，java呢，我不懂，那么就想用我偉大的nodejs，結(jié)果還真有那么厲害的。好了，我就不嫌棄java了，這里當做小筆記，絕非復(fù)制粘貼。

npm i xlsx -S

讀取數(shù)據(jù)

let xlsx = require('xlsx');

let workbook = xlsx.readFile('susu.xlsx'); //workbook就是xls文檔對象

let sheetNames = workbook.SheetNames; //獲取表明

let sheet = workbook.Sheets[sheetNames[0]]; //通過表明得到表對象

var data =xlsx.utils.sheet_to_json(sheet); //通過工具將表對象的數(shù)據(jù)讀出來并轉(zhuǎn)成json

寫數(shù)據(jù)

let xlsx = require('xlsx');
let json = [ 
    {"大標題":null},
    {null:"大標題"},
    {null:"大標題"},
    {null:"大標題"},
    { Name: 'name_01', Age: 21, Address: 'address_01' },
    { Name: 'name_02', Age: 22, Address: 'address_02' },
    { Name: 'name_03', Age: 23, Address: 'address_03' },
    { Name: 'name_04', Age: 24, Address: 'address_04' },
    { Name: 'name_05', Age: 25, Address: 'address_05' }, ];

let ss = xlsx.utils.json_to_sheet(json); //通過工具將json轉(zhuǎn)表對象
let keys = Object.keys(ss).sort(); //排序 [需要注意，必須從A1開始]

let ref = keys[1]+':'+keys[keys.length - 1]; //這個是定義一個字符串 也就是表的范圍[A1:C5] 

let workbook = { //定義操作文檔
    SheetNames:['nodejs-sheetname'], //定義表明
    Sheets:{
        'nodejs-sheetname':Object.assign({},ss,{'!ref':ref}) //表對象[注意表明]
    },
}

xlsx.writeFile(workbook,"./suzhenwei.xls"); //將數(shù)據(jù)寫入文件