To read the entire file into a string asynchronously –require("fs").readFile("FILE.TXT", "utf8", (err, data) => { console.log(data); }); Read a file into a string synchronously –var data = require("fs").readFileSync("FILE.TXT", "utf8"); Read a file line-by-line. const...
input: readStream }) readLine.on('line',function(line){varrs =callback(line); writeStream.write(rs+os.EOL); }) } exports.readWriteFileByLine=readWriteFileByLine; exports.readWriteFileByLineWithProcess= readWriteFileByLineWithProcess b. 功能的调用:index.js varrwByLine = require('./lib/r...
constevents=require('events');constfs=require('fs');constreadline=require('readline');(asyncfunctionprocessLineByLine(){try{constrl=readline.createInterface({input:fs.createReadStream('broadband.sql'),crlfDelay:Infinity});rl.on('line',(line)=>{console.log(`Line from file:${line}`);});aw...
Node.js Version: 10.1.0 OS: Windows/Ubuntu Scope: code Module: Readfile Background Dear awesome people, I am trying to read a several GB sized file line by line. I want to process each line and after that write it to a file. I don't want...
一.直接操作文件2最简单的两个fs.readFile和fs.writeFile3举例:这个程序的功能是将一个比较大json格式的文件转换成你想自己要格式的文件。4varfs = require('fs');5fs.readFile('./json.json',function(err,data){6if(err)throwerr;78varjsonObj =JSON.parse(data);9varspace = ' ';10varnewLine =...
constreadline =require('readline');constfs =require('fs');constrl = readline.createInterface({input: fs.createReadStream('./access.log') }); rl.on('line',(line) =>{constarr = line.split(' ');console.log('访问时间:%s %s,访问地址:%s', arr[0], arr[1], arr[13]); ...
createReadStream('./access.log') }); rl.on('line', (line) => { const arr = line.split(' '); console.log('访问时间:%s %s,访问地址:%s', arr[0], arr[1], arr[13]); }); 运行结果如下: ➜ lineByLineFromFile git:(master) ✗ node app.js 访问时间:[2016-12-09 13:56:...
constreadline=require('readline');constfs=require('fs');constrl=readline.createInterface({input:fs.createReadStream('./access.log')});rl.on('line',(line)=>{constarr=line.split(' ');console.log('访问时间:%s %s,访问地址:%s',arr[0],arr[1],arr[13]);}); ...
Foreback 现在nodejs在服务器上使用越来越广了,常用的框架有express、koa、eggjs等,nodejs进程管理工具是pm2。...下面就说下nodejs在实战中的日志管理日志管理一般有两种,一种是上传到日志服务器,一种是本地保存。 每个公司实现情况不一样,下面只说下本地保存的方案。
byline - Super-simple line-by-line Stream reader. first-chunk-stream - Transform the first chunk in a stream. pad-stream - Pad each line in a stream. multistream - Combine multiple streams into a single stream. stream-combiner2 - Turn a pipeline into a single stream. readable-stream -...