node 讀取.xlsx文件寫入文件

node讀取.xlsx文件寫入文件

1. node讀取.xlsx文件

var fs = require('fs');
var events = require('events');
//引入node，解析.xlsx文件的模塊
var xlsx = require('node-xlsx');

var eventEmitter = new events.EventEmitter();

var work;
var workdata;
var objCategory={};
var aryCategory=[];

// 創建事件處理程序
var connectHandler = function connected() {
    console.log('連接成功。');
    work =  xlsx.parse(__dirname+'/日本出口報關分類表20190121.xlsx');
    workdata = work[0].data;
    //編寫數據格式，然後儲存
    for(var i=0;i<workdata.length;i++){
             var list={};
             list.japanExitChinese = workdata[i][0];
             list.japanExitJapanese = workdata[i][1];
             list.japanExitEnglish = workdata[i][2];
        aryCategory.push(list)
    }
    //console.log(aryCategory)
    // 觸發 data_received 事件
    eventEmitter.emit('data_received');
}

// 綁定 connection 事件處理程序
eventEmitter.on('connection', connectHandler);

// 使用匿名函數綁定 data_received 事件
eventEmitter.on('data_received', function(){
    console.log('數據接收成功。');
    //文件存放的路徑，把數據解析然後儲存
    fs.writeFile("url.js",'let exitName = ' + JSON.stringify(aryCategory), err => {
        if(!err) console.log("success~");
    });
});
// 觸發 connection 事件
eventEmitter.emit('connection');

console.log("程序執行完畢。");