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node.js+express+mysql

2016-01-05 10:27 666 查看

NodeJS对前端来说无疑具有里程碑意义，在其越来越流行的今天，掌握NodeJS已经不再是加分项，而是前端攻城师们必须要掌握的技能。本文将与同志们一起完成一个基于Express+MySQL的入门级服务端应用，即可以对数据库中的一张表进行简单的CRUD操作。但本人还是斗胆认为，通过这个应用，可以让没怎么接触后端开发的同志对使用Node进行后端开发有一个大致了解。

Express工程环境准备

1. 安装express，和express项目种子生成器（什么？你问第1步为什么不是安装NodeJS，我也只能呵呵..）

安装express

npm install express -g

安装express

1	npm install express-generator -g

2. 创建工程。进入工程目录，运行命令

1	express projectName

expresst项目种子生成器会帮我们生成express相应的工程结构，如下

/bin: 用于应用启动

/public: 静态资源目录

/routes：可以认为是controller（控制器）目录

/views: jade模板目录，可以认为是view(视图)目录

app.js 程序main文件

3. 进入工程，安装依赖，然后启动应用

在工程根目录，使用npm install安装依赖，使用npm start启动应用。完成后，你在命令行工具里会看出如下界面，在浏览器中访问会得到我们应用的默认页面

MySQL环境准备

1. 当然，首先你要准备好MySQL环境。可以参看http://supportopensource.iteye.com/blog/1415527进行安装，同时也建议安装一个数据库管理工具，如navicat for mysql,方便操作

2. 创建表

MySQL安装好了后，进入到数据库，创建要用到的表(如user), 结构如下

3. 安装Node的MySQL驱动（请允许装X一下…）

在package.json的dependencies中新增, “mysql” : “latest”，并执行npm install安装依赖

编写相关代码，整合Express+MySQL

1. 首先，我们先建几个目录，简单分下层（看出我还是很用心木有？）

在工程根目录新增三个目录：

util – 工具方法

conf – 配置

dao – 与数据库交互

完成后的工程结构

2.在conf目录中，编写mySQL数据库连接配置

1234567891011

// conf/db.js// MySQL数据库联接配置module.exports = { mysql: { host: ‘127.0.0.1’, user: ‘root’, password: ”, database:‘test’, // 前面建的user表位于这个数据库中 port: 3306 }};

2. 编写CRUD SQL语句

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// dao/userSqlMapping.js// CRUD SQL语句var user = { insert:‘INSERT INTO user(id, name, age) VALUES(0,?,?)’, update:‘update user set name=?, age=? where id=?’, delete: ‘delete from user where id=?’, queryById: ‘select * from user where id=?’, queryAll: ‘select * from user’}; module.exports = user;

3. 增加路由及实现数据库的CRUD

以C（新增）的具体实现举例，在/routes/users.js 中增加一个路由

<div id="crayon-568b1bd3cf16a560136502" class="crayon-syntax crayon-theme-sublime-text crayon-font-courier-new crayon-os-pc print-yes notranslate" data-settings=" minimize scroll-mouseover" style="margin-top: 1px; margin-bottom: 1px; font-size: 14px !important; line-height: 15px !important; height: 87px;">

<div class="crayon-plain-wrap"></div>
<div class="crayon-main" style="position: relative; z-index: 1; overflow: hidden;">
<table class="crayon-table">
<tbody><tr class="crayon-row">
<td class="crayon-nums " data-settings="show">
<div class="crayon-nums-content" style="font-size: 14px !important; line-height: 15px !important;"><div class="crayon-num" data-line="crayon-568b1bd3cf16a560136502-1">1</div><div class="crayon-num" data-line="crayon-568b1bd3cf16a560136502-2">2</div><div class="crayon-num" data-line="crayon-568b1bd3cf16a560136502-3">3</div><div class="crayon-num" data-line="crayon-568b1bd3cf16a560136502-4">4</div></div>
</td>
<td class="crayon-code"><div class="crayon-pre" style="font-size: 14px !important; line-height: 15px !important; -moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4;"><div class="crayon-line" id="crayon-568b1bd3cf16a560136502-1"><span class="crayon-c">// 增加用户</span></div><div class="crayon-line" id="crayon-568b1bd3cf16a560136502-2"><span class="crayon-v">router</span><span class="crayon-sy">.</span><span class="crayon-e">get</span><span class="crayon-sy">(</span><span class="crayon-s">'/addUser'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-t">function</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-h"> </span><span class="crayon-sy">{</span></div><div class="crayon-line" id="crayon-568b1bd3cf16a560136502-3"><span class="crayon-h"> </span><span class="crayon-v">userDao</span><span class="crayon-sy">.</span><span class="crayon-e">add</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf16a560136502-4"><span class="crayon-sy">}</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div></div></td>
</tr>
</tbody></table>
</div>
</div>

在userDao中实现add方法

// dao/userDao.js
// 实现与MySQL交互
var mysql = require('mysql');
var $conf = require('../conf/conf');
var $util = require('../util/util');
var $sql = require('./userSqlMapping');

// 使用连接池，提升性能
var pool  = mysql.createPool($util.extend({}, $conf.mysql));

// 向前台返回JSON方法的简单封装
var jsonWrite = function (res, ret) {
if(typeof ret === 'undefined') {
res.json({
code:'1',
msg: '操作失败'
});
} else {
res.json(ret);
}
};

module.exports = {
add: function (req, res, next) {
pool.getConnection(function(err, connection) {
// 获取前台页面传过来的参数
var param = req.query || req.params;

// 建立连接，向表中插入值
// 'INSERT INTO user(id, name, age) VALUES(0,?,?)',
connection.query($sql.insert, [param.name, param.age], function(err, result) {
if(result) {
result = {
code: 200,
msg:'增加成功'
};
}

// 以json形式，把操作结果返回给前台页面
jsonWrite(res, result);

// 释放连接
connection.release();
});
});
}
};

4. 测试整合是否成功

因为前面实现的是一个get请求的add方法，所以可以在浏览器中直接使用地址访问，进入路由, http://localhost:3000/users/addUser?name=xyz&age=18.如果你得到如下JSON返回或看到数据表中有上面的数据插入，表示整合成功了

5. 同理，实现CRUD其它的方法，最终完整的的routes/user.js为：

<div id="crayon-568b1bd3cf173813831720" class="crayon-syntax crayon-theme-sublime-text crayon-font-courier-new crayon-os-pc print-yes notranslate" data-settings=" minimize scroll-mouseover" style="margin-top: 1px; margin-bottom: 1px; font-size: 14px !important; line-height: 15px !important; height: 522px;">

<div class="crayon-plain-wrap"></div>
<div class="crayon-main" style="position: relative; z-index: 1; overflow: hidden;">
<table class="crayon-table">
<tbody><tr class="crayon-row">
<td class="crayon-nums " data-settings="show">
<div class="crayon-nums-content" style="font-size: 14px !important; line-height: 15px !important;"><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-1">1</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-2">2</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-3">3</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-4">4</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-5">5</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-6">6</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-7">7</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-8">8</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-9">9</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-10">10</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-11">11</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-12">12</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-13">13</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-14">14</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-15">15</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-16">16</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-17">17</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-18">18</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-19">19</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-20">20</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-21">21</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-22">22</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-23">23</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-24">24</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-25">25</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-26">26</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-27">27</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-28">28</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-29">29</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-30">30</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-31">31</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-32">32</div><div class="crayon-num" data-line="crayon-568b1bd3cf173813831720-33">33</div></div>
</td>
<td class="crayon-code"><div class="crayon-pre" style="font-size: 14px !important; line-height: 15px !important; -moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4;"><div class="crayon-line" id="crayon-568b1bd3cf173813831720-1"><span class="crayon-t">var</span><span class="crayon-h"> </span><span class="crayon-v">express</span><span class="crayon-h"> </span><span class="crayon-o">=</span><span class="crayon-h"> </span><span class="crayon-e">require</span><span class="crayon-sy">(</span><span class="crayon-s">'express'</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-2"><span class="crayon-t">var</span><span class="crayon-h"> </span><span class="crayon-v">router</span><span class="crayon-h"> </span><span class="crayon-o">=</span><span class="crayon-h"> </span><span class="crayon-v">express</span><span class="crayon-sy">.</span><span class="crayon-e">Router</span><span class="crayon-sy">(</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-3"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-4"><span class="crayon-t">var</span><span class="crayon-h"> </span><span class="crayon-v">userDao</span><span class="crayon-h"> </span><span class="crayon-o">=</span><span class="crayon-h"> </span><span class="crayon-e">require</span><span class="crayon-sy">(</span><span class="crayon-s">'../dao/userDao'</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-5"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-6"><span class="crayon-c">/* GET users listing. */</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-7"><span class="crayon-v">router</span><span class="crayon-sy">.</span><span class="crayon-e">get</span><span class="crayon-sy">(</span><span class="crayon-s">'/'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-t">function</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-h"> </span><span class="crayon-sy">{</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-8"><span class="crayon-h">  </span><span class="crayon-v">res</span><span class="crayon-sy">.</span><span class="crayon-e">send</span><span class="crayon-sy">(</span><span class="crayon-s">'respond with a resource'</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-9"><span class="crayon-sy">}</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-10"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-11"><span class="crayon-c">// 增加用户</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-12"><span class="crayon-c">//TODO 同时支持get,post</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-13"><span class="crayon-v">router</span><span class="crayon-sy">.</span><span class="crayon-e">get</span><span class="crayon-sy">(</span><span class="crayon-s">'/addUser'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-t">function</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-h"> </span><span class="crayon-sy">{</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-14"><span class="crayon-h">  </span><span class="crayon-v">userDao</span><span class="crayon-sy">.</span><span class="crayon-e">add</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-15"><span class="crayon-sy">}</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-16"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-17"><span class="crayon-v">router</span><span class="crayon-sy">.</span><span class="crayon-e">get</span><span class="crayon-sy">(</span><span class="crayon-s">'/queryAll'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-t">function</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-h"> </span><span class="crayon-sy">{</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-18"><span class="crayon-h">    </span><span class="crayon-v">userDao</span><span class="crayon-sy">.</span><span class="crayon-e">queryAll</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-19"><span class="crayon-sy">}</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-20"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-21"><span class="crayon-v">router</span><span class="crayon-sy">.</span><span class="crayon-e">get</span><span class="crayon-sy">(</span><span class="crayon-s">'/query'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-t">function</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-h"> </span><span class="crayon-sy">{</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-22"><span class="crayon-h">  </span><span class="crayon-v">userDao</span><span class="crayon-sy">.</span><span class="crayon-e">queryById</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-23"><span class="crayon-sy">}</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-24"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-25"><span class="crayon-v">router</span><span class="crayon-sy">.</span><span class="crayon-e">get</span><span class="crayon-sy">(</span><span class="crayon-s">'/deleteUser'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-t">function</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-h"> </span><span class="crayon-sy">{</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-26"><span class="crayon-h">    </span><span class="crayon-v">userDao</span><span class="crayon-sy">.</span><span class="crayon-e">delete</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-27"><span class="crayon-sy">}</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-28"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-29"><span class="crayon-v">router</span><span class="crayon-sy">.</span><span class="crayon-e">post</span><span class="crayon-sy">(</span><span class="crayon-s">'/updateUser'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-t">function</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-h"> </span><span class="crayon-sy">{</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-30"><span class="crayon-h">  </span><span class="crayon-v">userDao</span><span class="crayon-sy">.</span><span class="crayon-e">update</span><span class="crayon-sy">(</span><span class="crayon-v">req</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">res</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">next</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-31"><span class="crayon-sy">}</span><span class="crayon-sy">)</span><span class="crayon-sy">;</span></div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-32"> </div><div class="crayon-line" id="crayon-568b1bd3cf173813831720-33"><span class="crayon-v">module</span><span class="crayon-sy">.</span><span class="crayon-v">exports</span><span class="crayon-h"> </span><span class="crayon-o">=</span><span class="crayon-h"> </span><span class="crayon-v">router</span><span class="crayon-sy">;</span></div></div></td>
</tr>
</tbody></table>
</div>
</div>

完整的userDao.js为

// dao/userDao.js
// 实现与MySQL交互
var mysql = require('mysql');
var $conf = require('../conf/db');
var $util = require('../util/util');
var $sql = require('./userSqlMapping');

// 使用连接池，提升性能
var pool  = mysql.createPool($util.extend({}, $conf.mysql));

// 向前台返回JSON方法的简单封装
var jsonWrite = function (res, ret) {
if(typeof ret === 'undefined') {
res.json({
code:'1',
msg: '操作失败'
});
} else {
res.json(ret);
}
};

module.exports = {
add: function (req, res, next) {
pool.getConnection(function(err, connection) {
// 获取前台页面传过来的参数
var param = req.query || req.params;

// 建立连接，向表中插入值
// 'INSERT INTO user(id, name, age) VALUES(0,?,?)',
connection.query($sql.insert, [param.name, param.age], function(err, result) {
if(result) {
result = {
code: 200,
msg:'增加成功'
};
}

// 以json形式，把操作结果返回给前台页面
jsonWrite(res, result);

// 释放连接
connection.release();
});
});
},
delete: function (req, res, next) {
// delete by Id
pool.getConnection(function(err, connection) {
var id = +req.query.id;
connection.query($sql.delete, id, function(err, result) {
if(result.affectedRows > 0) {
result = {
code: 200,
msg:'删除成功'
};
} else {
result = void 0;
}
jsonWrite(res, result);
connection.release();
});
});
},
update: function (req, res, next) {
// update by id
// 为了简单，要求同时传name和age两个参数
var param = req.body;
if(param.name == null || param.age == null || param.id == null) {
jsonWrite(res, undefined);
return;
}

pool.getConnection(function(err, connection) {
connection.query($sql.update, [param.name, param.age, +param.id], function(err, result) {
// 使用页面进行跳转提示
if(result.affectedRows > 0) {
res.render('suc', {
result: result
}); // 第二个参数可以直接在jade中使用
} else {
res.render('fail',  {
result: result
});
}

connection.release();
});
});

},
queryById: function (req, res, next) {
var id = +req.query.id; // 为了拼凑正确的sql语句，这里要转下整数
pool.getConnection(function(err, connection) {
connection.query($sql.queryById, id, function(err, result) {
jsonWrite(res, result);
connection.release();

});
});
},
queryAll: function (req, res, next) {
pool.getConnection(function(err, connection) {
connection.query($sql.queryAll, function(err, result) {
jsonWrite(res, result);
connection.release();
});
});
}

};

除了update测试外，其它get请求都可以直接在浏览器中使用地址+参数完成测试。为了模拟post请求，同时简单使用下jade模板（Express支持的一种模板引擎），

我们在/views目录新建三个jade文件

updateUser.jade

12345678910111213141516171819

extends layout block content h1 更新用户资料 form(method=‘post’, action=‘/p/users/updateUser’) div.form-row label span ID: input(type=‘text’,name=‘id’) div.form-row label span name: input(type=‘text’,name=‘name’) div.form-row label span age: input(type=‘text’,name=‘age’) div.form-row input(type=‘submit’)

suc.jade

123	block content h1 操作成功！ pre #{JSON.stringify(result)}

fail.jade

123	block content h1 操作失败！ pre #{JSON.stringify(result)}

以下是更新测试结果

最后，如果你使用的是idea或webStrom这样的IDE，你就不需要安装express和express项目种子生成器了。这两个IDE是可以直接创建NodeJS项目

小结：

一个Express的helloWorld就差不多完成了, 可以通过这个链接下载此例子源代码http://pan.baidu.com/s/1jGvd4Bc。更多Express的功能（如日志，自动化测试等），等待大家去解锁，愿玩得愉快！

[转载自：TAT.Fujun的《初识NodeJS服务端开发（Express+MySQL）》](http://www.alloyteam.com/2015/03/sexpressmysql/)

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