var fs = require('fs')//遍歷文件夾，獲取所有文件夾里面的文件信息/* * @param path 路徑 * */function geFileList(path){ var filesList = []; readFile(path,filesList); return filesList;}//遍歷讀取文件function readFile(path,filesList){ files = fs.readdirSync(path);//需要用到同步讀取 files.forEach(walk); function walk(file) {   states = fs.statSync(path+'/'+file);     if(states.isDirectory())  {   readFile(path+'/'+file,filesList);  }  else  {    //創(chuàng)建一個(gè)對(duì)象保存信息   var obj = new Object();   obj.size = states.size;//文件大小，以字節(jié)為單位   obj.name = file;//文件名   obj.path = path+'/'+file; //文件絕對(duì)路徑   filesList.push(obj);  }   }}//寫入文件utf-8格式function writeFile(fileName,data){  fs.writeFile(fileName,data,'utf-8',complete); function complete() {  console.log("文件生成成功"); } }var filesList = geFileList("G:/nodejs");filesList.sort(sortHandler);function sortHandler(a,b){ if(a.size > b.size) return -1; else if(a.size < b.size) return 1 return 0;}var str='';for(var i=0;i<filesList.length;i++){ var item = filesList[i]; var desc ="文件名:"+item.name + " "  +"大小:"+(item.size/1024).toFixed(2) +"/kb"+" "  +"路徑:"+item.path; str+=desc +"/n"}writeFile("test.txt",str);