node.js-----处理POST请求

简单的demo,post数据，并且接受数据

requestHandlers的模块

　　start() : POSt表单HTML

　　upload : POST数据获取页面

-----requestHandlers.js

-----router.js

-----server.js

-----index.js

requestHandlers.js

/*简但的demo POST数据，并接受数据*/
/*requestHandlers.js模块*/
function start(response,postData){
	console.log("Request handler 'start' was called");
	
	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>'; 
	
	response.writeHead(200,{"Content-Type":"text/html"});
	response.write(body);
	response.end();	
}
function upload(response,postData){
	console.log("Request handler 'upload' was called");
	response.writeHead(200,{"Content-Type":"text/html"});
	response.write("you've sent" + postData);
	response.end();
}
exports.start = start;
exports.upload = upload;

router.js

/*routers.js 模块*/
/*通过检查给定的路径对应的请求处理程序是否存在，如果存在的话直接调用相应的函数，并返回相应是字符串*/
function route(handle,pathname,response,postData){
	console.log("About to route a request for " + pathname);
	if(typeof handle[pathname] === 'function'){
		handle[pathname](response,postData);
	}else{
		console.log("No request handler for  " + pathname);
			response.writeHead(404,{"Content-Type":"text/html"});
			response.write("404 Not found");
			response.end();
	}
}
exports.route = route;

server.js

/*server模块*/
var http = require("http");
var url = require("url");

function start(route, handle){
	function onRequest(request, response){
		var postData = "";
		var pathname = url.parse(request.url).pathname;
		console.log("Request for " + pathname + "received");
		
		request.setEncoding("utf8");
		
		request.addListener("data",function(postDataChunk){
			postData += postDataChunk;
			console.log("Received POST data chunk" + postDataChunk + ".");
		});
		
		request.addListener("end", function(){
			route(handle, pathname, response, postData);
		});
	}
	http.createServer(onRequest).listen(3000);
	console.log("Server has started");
}
exports.start = start;

index.js　

/*index模块*/
var server = require("./server");
var router = require("./router"); 
var requestHandlers = require("./requestHandlers"); 
 
var handle = {} 
//区分大小写的  
handle["/"] = requestHandlers.start; 
handle["/start"] = requestHandlers.start; 
handle["/upload"] = requestHandlers.upload; 
 
server.start(router.route, handle);

命令行启动应用：