Node.js 实现简单的接口服务器的实例代码

-----
  |----HamstrerServlet
  | ------ command3G
    | ------ login.js  //登录脚本(这里只是简单演示)
 | --- server.js (主启动脚本)
 | --- dbutil (数据库操作)

var $ = require('jquery'); 
var _ = require('underscore'); 
var vm = require('vm'); 
var fs = require('fs'); 
var journey = require('journey'); 
var async = require('async'); 
var dbutil = require('./dbutil'); 
 
String.prototype.replaceAll = function(s1, s2) { 
  var demo = this 
  while (demo.indexOf(s1) != - 1) 
  demo = demo.replace(s1, s2); 
  return demo; 
} 
// Create a Router 
var router = new(journey.Router); 
 
// Create the routing table 
router.map(function() { 
  // this.root.bind(function (req, res) { res.send("Welcome") }); 
  this.get(/HamstrerServlet\/(\w*\W*\w*)*/).bind(function(req, res, id) { 
    var runJsPath = this.request.url.pathname.replaceAll("/HamstrerServlet", "")   ".js"; 
    console.log("执行的脚本文件:"   runJsPath); 
 
    //传入的绑定变量 
    var sandbox = { 
      req: req, 
      res: res, 
      $: $, 
      dbutil: dbutil, 
      async: async, 
      console: console 
    }; 
 
    fs.readFile('./HamstrerServlet'   runJsPath, function(err, data) { 
      vm.runInNewContext(data, sandbox, 'myfile.vm'); 
    }); 
 
  }); 
  this.post('/^HamstrerServlet\/(\w*)$/)').bind(function(req, res, data) { 
    res.send(200); 
  }); 
}); 
 
require('http').createServer(function(request, response) { 
  var body = ""; 
 
  request.addListener('data', function(chunk) { 
    body  = chunk 
  }); 
  request.addListener('end', function() { 
    router.handle(request, body, function(result) { 
      response.writeHead(result.status, result.headers); 
      response.end(result.body); 
    }); 
  }); 
}).listen(8080); 

var mysql = require('mysql'); //导入mysql Module 
 
var pool = mysql.createPool({ 
  host: '192.168.140.237', 
  user: 'root', 
  password: '123456', 
  database: 'command3G' 
}); 
 
//查询sql语句 
function query(strSQL, param, callback) { 
  pool.getConnection(function(err, connection) { 
    connection.query(strSQL, param, function(err, rows, fields) { 
      if (err) throw err; 
      callback(rows, fields); 
      connection.end(); 
      // connection.destroy(); 
    }); 
  }); 
} 
 
exports.query = query; 

console.log("beigin"); 
 
//并行处理，相当于2个map最后再做一个ReReduce 
async.parallel([ 
  function(callback){ 
    // 从数据库中获取当前时间 
    dbutil.query("SELECT CURTIME() AS DATE",null,function(rows,fields){ 
      callback(null, rows[0].DATE); 
    }); 
  }, 
  function(callback){ 
    //随便返回一个值 
    callback(null, '中文测试'); 
  } 
], 
function(err, results){ 
  console.log(results); 
  var retVal ={ 
    "currentTime": results[0], 
    "desc": results[1] 
  }; 
  res.sendBody(JSON.stringify(retVal)); 
});