nodejs实现用户登录路由功能

2019-11-19 11:29:26

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经过前面几次的学习，已经可以做下小功能，今天要实现的事用户登录路由。

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服务器实现用户登录路由

var crypto=require('crypto');var mongoose=require('mongoose'),User=mongoose.model('User');function hashPW(pwd){  return crypto.createHash('sha256').update(pwd).  digest('base64').toString();}//实现用户登录路由exports.login=function (req,res){  User.findOne({username:req.body.username})  .exec(function(err,user){    if(!user){      err='User Not Found';    }else if(user.hashed_password===hashPW(req.body.password.toString())){      req.session.regenerate(function(){        req.session.user=user.id;        req.session.username=user.username;        req.session.msg='Authenticated as ' +user.username;        res.redirect('/');      });    }else{      err='Authentication failed. ';    }    if(err){      req.session.regenerate(function(){        req.session.msg=err;        res.redirect('/login');      });    }  });};

三、login.html

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>用户登录</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">登录</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>   <input type="submit" value="登录"> </form> </div> <a href="/signup" rel="external nofollow" >注册</a> <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('/login',function(req,res){  if(req.session.user){    res.redirect('/');  }  res.render('login',{msg:req.session.msg})});app.post('/login',users.login);

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