node.js 搭建简单服务

server.js

// 这是一个简单的Node HTTP服务器,能处理当前目录的文件// 并能实现两种特殊的URL用于测试// 首先加载所有需要用到的模块var http = require('http');        // Http服务器APIvar fs = require('fs');            // 用于处理本地文件var server = new http.Server();    // 创建新的HTTP服务器server.listen(8888);            // 监听端口8888var mine=require('./mine').types;//var path=require('path');// 使用on方法注册时间处理server.on('request', function(request, response) { // 当有request请求的时候触发处理函数    //console.log('request');    // 解析请求的URL    var url = require('url').parse(request.url);        var pathname = url.parse(request.url).pathname;    var realPath = path.join("webapp", pathname);    var ext = path.extname(realPath);    console.log('-'+url.pathname);    // 特殊URL会让服务器在发送响应前先等待    switch(url.pathname) {        case ''||'/' : // 模拟欢迎页,nodejs是高效流处理的方案,也可以通过配置文件来配置        fs.readFile( realPath +"/index.html", function(err, content){            if(err) {                response.writeHead(404, { 'Content-Type':'text/plain; charset="UTF-8"' });                response.write(err.message);                response.end();            } else {                response.writeHead(200, { 'Content-Type' : 'text/html; charset=UTF-8' });                response.write(content+"11111");                response.end();            }        });        break;    case '/test/delay':// 此处用于模拟缓慢的网络连接        // 使用查询字符串来获取延迟时长,或者2000毫秒        var delay = parseInt(url.query) || 2000;        // 设置响应状态和头        response.writeHead(200, {'Content-type':'text/plain; charset=UTF-8'});        // 立即开始编写响应主体        response.write('Sleeping for' + delay + ' milliseconds...');        // 在之后调用的另一个函数中完成响应        setTimeout(function(){            response.write('done.');            response.end();        }, delay);        break;    case '/test/mirror':// 如果请求是test/mirror,则原文返回它        // 响应状态和头        response.writeHead(200, {'Content-type':'text/plain; charset=UTF-8'});        // 用请求的内容开始编写响应主体        response.write(request.mothod + ' ' + request.url + ' HTTP/' + request.httpVersion + '\r\n');        // 所有的请求头        for (var h in request.headers) {            response.write(h + ':' + request.headers[h] + '\r\n');        }        response.write('\r\n');// 使用额外的空白行来结束头        // 在这些事件处理程序函数中完成响应        // 当请求主体的数据块完成时,把其写入响应中        request.on('data', function(chunk) { response.write(chunk); });        // 当请求结束时,响应也完成        request.on('end', function(chunk){ response.end(); });        break;    case '/json' : // 模拟JSON数据返回        // 响应状态和头        response.writeHead(200, {'Content-type':'application/json; charset=UTF-8'});        response.write(JSON.stringify({test:'success'}));        response.end();        break;    default:// 处理来自本地目录的文件        var filename = url.pathname.substring(1);    // 去掉前导'/'        var type = getType(filename.substring(filename.lastIndexOf('.')+1));        // 异步读取文件,并将内容作为单独的数据模块传给回调函数        // 对于确实很大的文件,使用流API fs.createReadStream()更好        fs.readFile( realPath , function(err, content){            if(err) {                response.writeHead(404, { 'Content-Type':'text/plain; charset="UTF-8"' });                response.write(err.message);                response.end();            } else {                //response.writeHead(200, { 'Content-Type' : type });  var contentType = mine[ext] || "text/plain";                    response.writeHead(200, {                        'Content-Type': contentType                    });                response.write(content);                response.end();            }        });        break;    }     });function getType(endTag){    var type=null;    switch(endTag){    case 'html' :    case 'htm' :        type = 'text/html; charset=UTF-8';        break;    case 'js' :         type = 'application/javascript; charset="UTF-8"';        break;    case 'css' :        type = 'text/css; charset="UTF-8"';        break;    case 'txt' :        type = 'text/plain; charset="UTF-8"';        break;    case 'manifest' :        type = 'text/cache-manifest; charset="UTF-8"';        break;    default :        type = 'application/octet-stream';        break;    }    return type;}

mine.js

exports.types = {  "css": "text/css",  "gif": "image/gif",  "html": "text/html",  "ico": "image/x-icon",  "jpeg": "image/jpeg",  "jpg": "image/jpeg",  "js": "text/javascript",  "json": "application/json",  "pdf": "application/pdf",  "png": "image/png",  "svg": "image/svg+xml",  "swf": "application/x-shockwave-flash",  "tiff": "image/tiff",  "txt": "text/plain",  "wav": "audio/x-wav",  "wma": "audio/x-ms-wma",  "wmv": "video/x-ms-wmv",  "xml": "text/xml"};

目录：

启动服务：

node server.js

参考：

http://blog.csdn.net/u011456337/article/details/50704331

http://www.html5cn.org/article-6329-1.html

链接mysql数据库：

var sys = require('sys'); var Client = require('mysql').createConnection({        host: 'localhost',        user: 'root',        password: 'root',        database: 'test'    });client = Client ;client.connect(function(error, results) {  if(error) {  console.log('Connection Error: ' + error.message);  return;  }  console.log('Connected to MySQL');  GetData(client);//查询数据库});GetData = function(client)  {  client.query(   'SELECT * FROM table ',  function selectCb(error, results, fields) {  if (error) {  console.log('GetData Error: ' + error.message);  client.end();  return;  }  // Uncomment these if you want lots of feedback  //console.log('Results:');  //console.log(results);  //console.log('Field metadata:');  //console.log(fields);  //console.log(sys.inspect(results));    if(results.length > 0)  {  //var firstResult = results[0];  //console.log('#' + firstResult['mail']);for(var i=0;i< results.length;i++){var re = results[i];console.log(i+' - '+ re['mail'] );}}  });    client.end();  console.log('Connection closed');  };