Nodejs入门

老大让做一个简单的Http服务器响应的东西，可是服务器端的脚本一点点也不会，ruby到现在也没怎么入门，想起nodejs可以做简单快速的服务器端，就用这个了

其实需求很简单就是响应URL的参数请求做一些简单的响应，nodejs用的是javascript，方法也不是很复杂，module也不用太多，觉得挺适合的，于是就从0开始了

下载源码，编译，看sample，就开始写了。

源码如下

var sys = require("util"),
    http = require("http"),url = require("url");

var  fs = require("fs");
var querystring = require("querystring");

http.createServer(function(request, response) {
	console.log("request version" + request.httpVersion + " request headers " + request.headers["Content-Type"] + "  " + JSON.stringify(request.headers)) ;
	var pathname = url.parse(request.url).pathname;
	var search = url.parse(request.url).search;
	var query = url.parse(request.url).query;
	if(pathname == '/update.zip'){
		fs.readFile("./update.zip", "binary", function(error, file) {
		if(error) {
		response.writeHead(500, {"Content-Type": "text/plain"});
		response.write(error + "\n");
		response.end();
		} else {
		response.writeHead(200, {"Content-Type": "application/zip"});
		response.write(file, "binary");
		response.end();
    }
	  });
	}else{
		console.log("pathname = " + pathname+"search "+search + " query = "+ query);
		response.writeHeader(200, {"Content-Type": "text/html"});
		var param =  querystring.parse(query);
		var srcversion =  param["swv"];
		console.log(" param = " + param["hw"]);
//		response.writeHeader(200, {"Content-Type": "text/html"});
		response.write('<?xml version="1.0" encoding="UTF-8"?>');
		response.write('<OTAPackage><srcVersion>'+srcversion +'</srcVersion>');
		response.write('<dstVersion>'+'higher version'+'</dstVersion>');
		response.write('<description><![CDATA[OTA_030_042]]></description>');
		response.write('<downloadURL>http://192.168.0.154:8080/update.zip</downloadURL>');
		response.write('<size>7953346</size>');
		response.write('<priority>Optional</priority>');
		response.write('<sessionId>007d0d21-64c8-4768-9f91-d1ae5268113f</sessionId>');
		response.write('</OTAPackage>');
		response.end();
	}
}).listen(8080,"192.168.0.154");
sys.puts("Server running at http://localhost:8080/");

就是这么简单的东西，刚开始的时候response没有写end，结果只能第一次响应正确，后面的全都挂了，http协议也不是太熟悉，具体原因也没搞清楚，有知道的高手请告知一下，谢谢了