Node.js 写入文件

Node.js 写入文件

var fs = require("fs");
module.exports = {
    writefile : function(path,data,recall){ //异步
        fs.writeFile(path,data,function(err){
            if(err){
                throw err;
            }
            console.log('saved!');
            recall('写文件成功');
        });
        console.log("异步写文件完成");
    },

    writeFileSync : function(path,data){    //同步
        fs.writeFileSync(path,data);
        console.log("同步写文件完成");
    }
}

异步写入文件

var http = require('http');
var writefile = require('./fswrite');
http.createServer(function(request,response){
    response.writeHead(200,{'Content-Type' : 'text/html; charset=UTF-8'});
    if(request.url != '/favicon.ico'){
        function recall(data){  //等待readfile执行完之后回调
            response.write(data);
            response.end('ok');
        }
        writefile.writefile('./aaa.txt','aaaa',recall);//传入闭包函数
        console.log("主程序结束");
    }   
}).listen(8000);

console.log('Server running at http://127.0.0.1:8000');

同步写入文件

var http = require('http');
var writefile = require('./fswrite');
http.createServer(function(request,response){
    response.writeHead(200,{'Content-Type' : 'text/html; charset=UTF-8'});
    if(request.url != '/favicon.ico'){
        writefile.writeFileSync('./bbb.txt','bbb');
        console.log("主程序结束");
        response.end('ok');
    }   
}).listen(8000);

console.log('Server running at http://127.0.0.1:8000');