1 var express = require('express');//引入 express
 2 var home = require('./router/index');//引入需要的路由
 3 var mysql = require('mysql'),//配置mysql数据库
 4 myConnection = require('express-myconnection'),
 5 dbOptions = {
 6     host : 'localhost',
 7     user:'root',
 8     password:'***',
 9     port: 3306,
10     database:'dataBaseName'
11 };
12
13 var app = express();//创建express应用
14 app.use(myConnection(mysql, dbOptions, 'single'));//这里用简单的单例连接
15 app.use('/', home);
16 //创建服务
17 var server = app.listen(3000, function(){
18     var host = server.address().address;
19     var port = server.address().port;
20     console.log('Express app listening at: http://%s:%s ' ,host, port);
21 });

 1 var express = require('express');
 2 var router = express.Router();//引用express的路由
 3 router.get('/', function(req, res, next){//首页路由
 4         res.send('欢迎来到首页');
 5         next();
 6     });
 7     router.get('/about', function(req, res){//关于界面
 8         res.send('关于界面');
 9     });
10 router.get('/test', function(req, res, next){//测试数据库能否查询成功
11         req.getConnection(function (err, conn) {
12             if(err){
13                 return next(err);
14             }else {
15                 conn.query('select * from user',[], function (err, result) {
16                     if(err){
17                         return next(err);
18                     }else{
19                         console.log(result);
20                         res.json(result);
21                     }
22                 })
23             }
24         })
25     });
26
27 router.get('/login', function(req, res){//处理一个简单的带参数的get请求
28         console.log("json" + JSON.stringify(req.query));
29         var params = req.query;
30         if(params.userName == 'wjw' && params.password == 'wjw'){
31             // res.json({"userName":userName,"password":password});
32             res.send("login success!");
33         }else {
34             res.send("userID or password was wrong!");
35         }
36     });
37   module.exports = router;//模块导出