登录功能实现

「爱情、让人受尽委屈。」 2022-04-14 05:54 271阅读 0赞

登录模板包括登录、登出、购物车数量查询、全局拦截

routes/user.js

引入user模型

var User = require('./../models/user');

登录以后需要将用户信息保存到cookie

在app.js中引入cookie-parser插件，专门处理cookie

var cookieParser = require('cookie-parser');

在app.js中引入body-parser,主要对post请求做json转换

var bodyParser = require('body-parser');

app.use(bodyParser.json());

app.use(cookieParser());

因为有了cookie-parser，我们可以做一些cookie的存取

增加转发

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h5cGhm_size_16_color_FFFFFF_t_70][]

node后端登录 routes/user.js

NavHeader.vue 登录功能

<template>
          <header class="header">
            <symbol id="icon-cart" viewBox="0 0 38 32">
              <title>cart</title>
              <path class="path1" d="M37.759 0h-4.133c-0.733 0.004-1.337 0.549-1.434 1.255l-0.546 4.342c-0.081 0.484-0.496 0.849-0.997 0.849-0.005 0-0.009-0-0.014-0h-27.604c-0.003 0-0.007-0-0.011-0-1.674 0-3.031 1.357-3.031 3.031 0 0.34 0.056 0.666 0.159 0.971l2.52 8.062c0.385 1.194 1.486 2.043 2.785 2.043 0.126 0 0.25-0.008 0.372-0.023l22.983 0.002c0.515 0.131 0.626 0.768 0.626 1.283 0.005 0.044 0.009 0.095 0.009 0.146 0 0.501-0.294 0.933-0.718 1.134l-22.439 0.003c-0.354 0-0.642 0.287-0.642 0.642s0.287 0.642 0.642 0.642h22.745l0.131-0.071c0.919-0.392 1.551-1.287 1.551-2.33 0-0.058-0.002-0.116-0.006-0.173 0.021-0.108 0.033-0.24 0.033-0.376 0-1.072-0.732-1.973-1.724-2.23l-23.357-0.004c-0.063 0.008-0.135 0.013-0.209 0.013-0.719 0-1.332-0.455-1.566-1.093l-2.53-8.095c-0.048-0.154-0.076-0.332-0.076-0.515 0-0.973 0.782-1.764 1.752-1.778h27.657c1.159-0.004 2.112-0.883 2.232-2.011l0.547-4.345c0.010-0.083 0.078-0.147 0.161-0.152l4.133-0c0.354 0 0.642-0.287 0.642-0.642s-0.287-0.642-0.642-0.642z"></path>
              <path class="path2" d="M31.323 9.69c-0.022-0.003-0.048-0.004-0.074-0.004-0.328 0-0.598 0.248-0.633 0.567l-0.809 7.268c-0.003 0.022-0.004 0.048-0.004 0.074 0 0.328 0.248 0.598 0.567 0.633l0.074 0c0.001 0 0.003 0 0.004 0 0.327 0 0.596-0.246 0.632-0.563l0.809-7.268c0.003-0.022 0.004-0.048 0.004-0.074 0-0.328-0.248-0.598-0.567-0.633z"></path>
              <path class="path3" d="M27.514 25.594c-1.769 0-3.203 1.434-3.203 3.203s1.434 3.203 3.203 3.203c1.769 0 3.203-1.434 3.203-3.203s-1.434-3.203-3.203-3.203zM27.514 30.717c-1.060 0-1.92-0.86-1.92-1.92s0.86-1.92 1.92-1.92c1.060 0 1.92 0.86 1.92 1.92s-0.86 1.92-1.92 1.92z"></path>
              <path class="path4" d="M9.599 25.594c-1.769 0-3.203 1.434-3.203 3.203s1.434 3.203 3.203 3.203c1.769 0 3.203-1.434 3.203-3.203s-1.434-3.203-3.203-3.203zM9.599 30.717c-1.060 0-1.92-0.86-1.92-1.92s0.86-1.92 1.92-1.92c1.060 0 1.92 0.86 1.92 1.92s-0.86 1.92-1.92 1.92z"></path>
            </symbol>
            <div class="navbar">
              <div class="navbar-left-container">
                <a href="/">
                  <img class="navbar-brand-logo" src="static/logo.png"></a>
              </div>
              <div class="navbar-right-container" style="display: flex;">
                <div class="navbar-menu-container">
                  
                  <span class="navbar-link"></span>
                  <span v-text="nickName" v-if="nickName"></span>
                  <a href="javascript:void(0)" class="navbar-link" @click="loginModalFlag=true" v-if="!nickName">Login</a>
                  <a href="javascript:void(0)" class="navbar-link" v-if="nickName">Logout</a>
                  <div class="navbar-cart-container">
                    <span class="navbar-cart-count"></span>
                    <a class="navbar-link navbar-cart-link" href="/#/cart">
                      <svg class="navbar-cart-logo">
                        <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-cart"></use>
                      </svg>
                    </a>
                  </div>
                </div>
            <div class="md-modal modal-msg md-modal-transition" v-bind:class="{'md-show':loginModalFlag}">
              <div class="md-modal-inner">
                <div class="md-top">
                  <div class="md-title">Login in</div>
                  <button class="md-close" @click="loginModalFlag=false">Close</button>
                </div>
                <div class="md-content">
                  <div class="confirm-tips">
                    <div class="error-wrap">
                      <span class="error error-show" v-show="errorTip">用户名或者密码错误</span>
                    </div>
                    <ul>
                      <li class="regi_form_input">
                        <i class="icon IconPeople"></i>
                        <input type="text" tabindex="1" name="loginname" v-model="userName" class="regi_login_input regi_login_input_left" placeholder="User Name" data-type="loginname">
                      </li>
                      <li class="regi_form_input noMargin">
                        <i class="icon IconPwd"></i>
                        <input type="password" tabindex="2"  name="password" v-model="userPwd" class="regi_login_input regi_login_input_left login-input-no input_text" placeholder="Password" @keyup.enter="login">
                      </li>
                    </ul>
                  </div>
                  <div class="login-wrap">
                    <a href="javascript:;" class="btn-login" @click="login">登  录</a>
                  </div>
                </div>
              </div>
            </div>
            <div class="md-overlay" v-if="loginModalFlag" @click="loginModalFlag=false"></div>
              </div>
            </div>
          </header>
    </template>
    <script>
    import './../assets/css/login.css'
    import axios from 'axios'
    export default {
            data(){
                return{
                  userName:'admin', // 用户名
                  userPwd:'123456', // 密码
                  errorTip:false, // 校验
                  loginModalFlag:false, // 是否显示遮罩层
                  nickName:''
                }
            },
            methods: {
              login(){ // 登录方法
                  if(!this.userName || !this.userPwd){
                    this.errorTip = true;
                    return;
                  }
                  axios.post("/users/login",{
                    userName:this.userName,
                    userPwd:this.userPwd
                  }).then((response)=>{
                    let res = response.data;
                    if(res.status=='0'){
                      this.errorTip = false;
                      this.loginModalFlag = false;
                      this.nickName = res.result.userName;
                    }else{
                      this.errorTip = true;
                    }
                  })
              }
            }
    }
    </script>

node登出功能

router/user.js

// 登出接口
    router.post("/logout", function (req,res,next) {
      res.cookie("userId", "", { // 登出将userId设置为""
        path:"/",
        maxAge:-1 // 设置位过期
      })
      res.json({
        status:"0",
        msg:'',
        result:''
      })
    })

登出vue前端

logOut(){
                axios.post("/users/logout").then((response)=>{
                  let res = response.data;
                  if(res.status=="0"){
                    this.nickName = '';
                  }
                })
              }

》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》

登录拦截

在app.js路由之前添加登录拦截

在express框架中只有安装了[express-session][]框架session才可以使用

[https://www.npmjs.com/package/express-session][express-session]

安装 npm install express-session

node express  app.js   全局登录拦截

node express router/users.js 登录、登出、校验用户信息

vue 登录登出用户信息校验

<template>
          <header class="header">
            <symbol id="icon-cart" viewBox="0 0 38 32">
              <title>cart</title>
              <path class="path1" d="M37.759 0h-4.133c-0.733 0.004-1.337 0.549-1.434 1.255l-0.546 4.342c-0.081 0.484-0.496 0.849-0.997 0.849-0.005 0-0.009-0-0.014-0h-27.604c-0.003 0-0.007-0-0.011-0-1.674 0-3.031 1.357-3.031 3.031 0 0.34 0.056 0.666 0.159 0.971l2.52 8.062c0.385 1.194 1.486 2.043 2.785 2.043 0.126 0 0.25-0.008 0.372-0.023l22.983 0.002c0.515 0.131 0.626 0.768 0.626 1.283 0.005 0.044 0.009 0.095 0.009 0.146 0 0.501-0.294 0.933-0.718 1.134l-22.439 0.003c-0.354 0-0.642 0.287-0.642 0.642s0.287 0.642 0.642 0.642h22.745l0.131-0.071c0.919-0.392 1.551-1.287 1.551-2.33 0-0.058-0.002-0.116-0.006-0.173 0.021-0.108 0.033-0.24 0.033-0.376 0-1.072-0.732-1.973-1.724-2.23l-23.357-0.004c-0.063 0.008-0.135 0.013-0.209 0.013-0.719 0-1.332-0.455-1.566-1.093l-2.53-8.095c-0.048-0.154-0.076-0.332-0.076-0.515 0-0.973 0.782-1.764 1.752-1.778h27.657c1.159-0.004 2.112-0.883 2.232-2.011l0.547-4.345c0.010-0.083 0.078-0.147 0.161-0.152l4.133-0c0.354 0 0.642-0.287 0.642-0.642s-0.287-0.642-0.642-0.642z"></path>
              <path class="path2" d="M31.323 9.69c-0.022-0.003-0.048-0.004-0.074-0.004-0.328 0-0.598 0.248-0.633 0.567l-0.809 7.268c-0.003 0.022-0.004 0.048-0.004 0.074 0 0.328 0.248 0.598 0.567 0.633l0.074 0c0.001 0 0.003 0 0.004 0 0.327 0 0.596-0.246 0.632-0.563l0.809-7.268c0.003-0.022 0.004-0.048 0.004-0.074 0-0.328-0.248-0.598-0.567-0.633z"></path>
              <path class="path3" d="M27.514 25.594c-1.769 0-3.203 1.434-3.203 3.203s1.434 3.203 3.203 3.203c1.769 0 3.203-1.434 3.203-3.203s-1.434-3.203-3.203-3.203zM27.514 30.717c-1.060 0-1.92-0.86-1.92-1.92s0.86-1.92 1.92-1.92c1.060 0 1.92 0.86 1.92 1.92s-0.86 1.92-1.92 1.92z"></path>
              <path class="path4" d="M9.599 25.594c-1.769 0-3.203 1.434-3.203 3.203s1.434 3.203 3.203 3.203c1.769 0 3.203-1.434 3.203-3.203s-1.434-3.203-3.203-3.203zM9.599 30.717c-1.060 0-1.92-0.86-1.92-1.92s0.86-1.92 1.92-1.92c1.060 0 1.92 0.86 1.92 1.92s-0.86 1.92-1.92 1.92z"></path>
            </symbol>
            <div class="navbar">
              <div class="navbar-left-container">
                <a href="/">
                  <img class="navbar-brand-logo" src="static/logo.png"></a>
              </div>
              <div class="navbar-right-container" style="display: flex;">
                <div class="navbar-menu-container">
                  
                  <span class="navbar-link"></span>
                  <span v-text="nickName" v-if="nickName"></span>
                  <a href="javascript:void(0)" class="navbar-link" @click="loginModalFlag=true" v-if="!nickName">Login</a>
                  <a href="javascript:void(0)" class="navbar-link" @click="logOut" v-if="nickName">Logout</a>
                  <div class="navbar-cart-container">
                    <span class="navbar-cart-count"></span>
                    <a class="navbar-link navbar-cart-link" href="/#/cart">
                      <svg class="navbar-cart-logo">
                        <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#icon-cart"></use>
                      </svg>
                    </a>
                  </div>
                </div>
            <div class="md-modal modal-msg md-modal-transition" v-bind:class="{'md-show':loginModalFlag}">
              <div class="md-modal-inner">
                <div class="md-top">
                  <div class="md-title">Login in</div>
                  <button class="md-close" @click="loginModalFlag=false">Close</button>
                </div>
                <div class="md-content">
                  <div class="confirm-tips">
                    <div class="error-wrap">
                      <span class="error error-show" v-show="errorTip">用户名或者密码错误</span>
                    </div>
                    <ul>
                      <li class="regi_form_input">
                        <i class="icon IconPeople"></i>
                        <input type="text" tabindex="1" name="loginname" v-model="userName" class="regi_login_input regi_login_input_left" placeholder="User Name" data-type="loginname">
                      </li>
                      <li class="regi_form_input noMargin">
                        <i class="icon IconPwd"></i>
                        <input type="password" tabindex="2"  name="password" v-model="userPwd" class="regi_login_input regi_login_input_left login-input-no input_text" placeholder="Password" @keyup.enter="login">
                      </li>
                    </ul>
                  </div>
                  <div class="login-wrap">
                    <a href="javascript:;" class="btn-login" @click="login">登  录</a>
                  </div>
                </div>
              </div>
            </div>
            <div class="md-overlay" v-if="loginModalFlag" @click="loginModalFlag=false"></div>
              </div>
            </div>
          </header>
    </template>
    <script>
    import './../assets/css/login.css'
    import axios from 'axios'
    export default {
            data(){
                return{
                  userName:'admin', // 用户名
                  userPwd:'123456', // 密码
                  errorTip:false, // 校验
                  loginModalFlag:false, // 是否显示遮罩层
                  nickName:''
                }
            },
            mounted() {
              this.checkLogin();
            },
            methods: {
              checkLogin(){
                  axios.get("/users/checkLogin").then((response)=>{
                      let res = response.data;
                      console.log(res);
                      if(res.status=="0"){
                        this.nickName = res.result;
                      }
                  });
              },
              login(){ // 登录方法
                  if(!this.userName || !this.userPwd){
                    this.errorTip = true;
                    return;
                  }
                  axios.post("/users/login",{
                    userName:this.userName,
                    userPwd:this.userPwd
                  }).then((response)=>{
                    let res = response.data;
                    if(res.status=='0'){
                      this.errorTip = false;
                      this.loginModalFlag = false;
                      this.nickName = res.result.userName;
                    }else{
                      this.errorTip = true;
                    }
                  });
              },
              logOut(){
                axios.post("/users/logout").then((response)=>{
                  let res = response.data;
                  if(res.status=="0"){
                    this.nickName = '';
                  }
                })
              }
            }
    }
    </script>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h5cGhm_size_16_color_FFFFFF_t_70]: /images/20220414/e2aa2c6f488948d78766d9f0152afd5a.png
[express-session]: https://www.npmjs.com/package/express-session