nodejs中实现用户注册路由功能

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经过前面几次的学习，已经可以做下小功能，今天要实现的是用户注册路由。

一、users_model.js 功能:定义用户对象模型

var mongoose=require('mongoose'),
   Schema=mongoose.Schema;
var UserSchema=new Schema({
   username:{type:String,unique:true},
   email:String,
   color:String,
   hashed_password:String
});
mongoose.model('User',UserSchema);

二、users_controller.js 功能:为Express服务器实现用户注册的路由

var crypto=require('crypto');
var mongoose=require('mongoose'),User=mongoose.model('User');
function hashPW(pwd){
  return crypto.createHash('sha256').update(pwd).
  digest('base64').toString();
}
//实现用户注册路由
exports.signup=function(req,res){
var user=new User({username:req.body.username});
user.set('hashed_password',hashPW(req.body.password));
user.set('email',req.body.email);
user.save(function(err){
  if(err){
    res.session.error=err;
    res.redirect('/signup');
  }else{
    req.session.user=user.id;
    req.session.username=user.username;
    req.session.msg='Authenticated as '+user.username;
    res.redirect('/');
  }
});
};

三、signup.html 用户注册页面

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户注册</title>
<link rel="stylesheet"type="text/css" href="/static/css/styles.css" rel="external nofollow" />
</head>
<body>
 <div class="form-container">
 <p class="form-header">注册</p>
 <form method="POST" >
  <label>用户名:</label>
   <input type="text" name="username"><br>
   <label>密码:</label>
   <input type="password" name="password"><br>
   <label>Email:</label>
   <input type="email" name="email"><br>
   <input type="submit" value="注册">
 </form>
 </div>
 <hr> <%=msg %>
</body>
</html>

四、routes.js 功能:为Express服务器实现处理Web请求路由

var crypto=require('crypto');
var express=require('express');
module.exports=function(app){
  var users=require('./controllers/users_controller');
  app.use('/static',express.static('./static')).
  use('/lib',express.static('../lib')
);
app.get('/signup',function(req,res){
  if(req.session.user){
    res.redirect('/');
  }
  res.render('signup',{msg:req.session.msg})
});
app.post('/signup',users.signup);

页面效果