nodejs实战：使用原生nodeJs模块实现静态文件及REST请求解析及响应（基于nodejs6.2.0版本，不使用express等webMVC框架）...

1、安装nodejs

首先你需要安装nodeJs

那么nodejs官网&＃xff1a;http://nodejs.cn/&＃xff0c;下载相应版本&＃xff0c;一步一步安装。

1、创建nodejs应用

直接上代码

var http &＃61; require(&＃39;http&＃39;);
var fs &＃61; require(&＃39;fs&＃39;);
var url &＃61; require(&＃39;url&＃39;);
var path &＃61; require(&＃39;path&＃39;);
var queryString &＃61; require(&＃39;querystring&＃39;);
//解析REST请求
function parseReq(response, pathName, queryStr) {//解析请求参数var reqStr &＃61; queryString.parse(queryStr);switch (pathName) {//简单实例&＃xff0c;解析请求参数获取用户名并通过json数据返回case "/dojoTest/getUser":response.writeHead(200, { &＃39;Content-Type&＃39;: &＃39;application/json;charset&＃61;utf-8&＃39; });var str &＃61; "{&＃39;errNum&＃39;: 200,&＃39;retMsg&＃39;: &＃39;请求成功&＃39;,&＃39;data&＃39;:&＃39; 用户名是&＃xff1a;" &＃43; reqStr.user &＃43; "&＃39;}";response.write(str);break;//简单实例&＃xff1a;通过REST请求方式获取当前时间case "/dojoTest/getTime":response.writeHead(200, { &＃39;Content-Type&＃39;: &＃39;application/json;charset&＃61;utf-8&＃39; });response.write("{&＃39;errNum&＃39;: 200,&＃39;retMsg&＃39;: &＃39;请求成功&＃39;,&＃39;data&＃39;:&＃39; 当前时间&＃xff1a;" &＃43; new Date().toLocaleString() &＃43; "&＃39;}");break;//如果没有对应的REST请求&＃xff0c;报个501错误给浏览器default:response.writeHead(501, { &＃39;Content-Type&＃39;: &＃39;application/json;charset&＃61;utf-8&＃39; });response.write(&＃39;{"errNum": 501,"retMsg":"请求失败&＃xff1a;该请求不存在","data":"null"}&＃39;);}response.end();
};
//解析静态请求
function staticFileReq(response, pathName, suffixStr) {//读取静态文件并生成流fs.readFile(pathName.substr(1), function(err, data) {if (err) {console.log(err);//HTTP 404 :页面不存在//没找到对应的静态文件怎么办&＃xff0c;给个404错误response.writeHead(404, { &＃39;Content-Type&＃39;: &＃39;text/html;charset&＃61;utf-8&＃39; });//响应文件流response.write("页面不存在&＃xff01;404");response.end();} else {//HTTP 200 : 成功if (suffixStr &＃61;&＃61;&＃61; ".css") {//设置charset&＃61;utf-8防止乱码response.writeHead(200, { &＃39;Content-Type&＃39;: &＃39;text/css;charset&＃61;utf-8&＃39; });} else {response.writeHead(200, { &＃39;Content-Type&＃39;: &＃39;text/html;charset&＃61;utf-8&＃39; });}//响应文件流response.write(data.toString());response.end();}});
}
//创建服务器
http.createServer(function(request, response) {//获取请求地址var requrl &＃61; request.url;var urlparse &＃61; url.parse(requrl);//请求路径var pathname &＃61; urlparse.pathname;//pathname&＃43;参数// var urlpath &＃61; urlparse.path;//参数var query &＃61; urlparse.query;//同上&＃xff0c;但参数前多个&＃xff1f;// var search &＃61; urlparse.search;//后缀var suffix &＃61; path.extname(pathname);//控制台显示信息// console.log("Request for " &＃43; pathname &＃43; " received,path is " &＃43; urlpath &＃43; ",query is" &＃43; query &＃43; ",search is" &＃43; search);console.log("Request for " &＃43; pathname &＃43; "received,suffix is " &＃43; suffix &＃43; ",query is " &＃43; query);if (suffix !&＃61; null && suffix.trim() !&＃61; "") {//静态文件处理staticFileReq(response, pathname, suffix);} else {//动态请求处理parseReq(response, pathname, query);}//响应结束
}).listen(8081);
//开启后在控制台显示该服务正在运行
console.log(&＃39;Server running at http://127.0.0.1:8081/&＃39;);

2、运行编写好的应用

3、从浏览器端发送请求和浏览页面

浏览器发送请求