node js

on node and learn

nodejs learn

1. nodejs 初步

var http = require("http"); //加载nodejs的内置模块  
http.createServer(function(req, res){  
	res.writeHead(200, {"Content-Type" : "text/plain"});  
	res.write("Hello World");  
	res.end();  
}).listen(8888);

创建一个http server 在内置函数中处理响应的请求和响应

nodejs 文件

server.js

var url = require("url");
var http = require("http");

function start(route, handler) {

function OnReq(req, res){
var pathname = url.parse(req.url).pathname;
route(pathname, handler, res);
}

http.createServer(OnReq).listen(8888);
console.log("serrver start ")
}

exports.start = start;

index.js

var server = require('./serrver');
var route = require('./route');
var handler = require('./handler');

server.start(route.route, handler);

route.js

function route(pathname, handler, res){

  console.log("route " + pathname);
  if(pathname == "/download"){
    console.log("333333");
    handler.download(res);
  }else if(pathname == "/upload"){
    console.log("1111111");
    handler.upload(res);
  }
}

exports.route = route;

handler.js

function download(res){
  var body = '<html>'+
    '<head>'+
    '<meta http-equiv="Content-Type" content="text/html; '+
    'charset=UTF-8" />'+
    '</head>'+
    '<body>'+
    '<form action="/upload" method="post">'+
    '<textarea name="text" rows="20" cols="60"></textarea>'+
    '<input type="submit" value="Submit text" />'+
    '</form>'+
    '</body>'+
    '</html>';

  res.writeHead(200, {"Content-Type" : "text/html"});
  res.write(body);
  res.end();

  console.log("download function ");
}

function upload(res){
  res.writeHead(200, {"Content-Type" : "text/html"});
  res.write("hello upload");
  res.end();

  console.log("upload function");
}

exports.upload = upload;
exports.download = download;

2. express 使用

由于使用Rails的习惯，自己构建了类似Rails的使用目录结构：

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