路由规则

const router = new VueRouter({
  routes: [
    { path: '/', redirect: '/login' },
    // 登录的路由规则
    { path: '/login', component: Login },
    // 后台主页的路由规则
    {
      path: '/home',
      component: Home,
      redirect: '/home/users',
      children: [
        { path: 'users', component: Users },
        { path: 'rights', component: Rights },
        { path: 'goods', component: Goods },
        { path: 'orders', component: Orders },
        { path: 'settings', component: Settings },
        // 用户详情页的路由规则
        { path: 'userinfo/:id', component: UserDetail, props: true }
      ]
    }
  ]
})

// 全局前置守卫
router.beforeEach(function(to, from, next) {
  if (pathArr.indexOf(to.path) !== -1) {
    const token = localStorage.getItem('token')
    if (token) {
      next()
    } else {
      next('/login')
    }
  } else {
    next()
  }
})

pathArr.js

export default ['/home', '/home/users', '/home/rights']

vue_47">Login.vue

<template>
  <div class="login-container">
    <div class="login-box">
      <!-- 头像区域 -->
      <div class="text-center avatar-box">
        <img src="../assets/logo.png" class="img-thumbnail avatar" alt="" />
      </div>

      <!-- 表单区域 -->
      <div class="form-login p-4">
        <!-- 登录名称 -->
        <div class="form-group form-inline">
          <label for="username">登录名称</label>
          <input
            type="text"
            class="form-control ml-2"
            id="username"
            placeholder="请输入登录名称"
            autocomplete="off"
            v-model.trim="username"
          />
        </div>
        <!-- 登录密码 -->
        <div class="form-group form-inline">
          <label for="password">登录密码</label>
          <input
            type="password"
            class="form-control ml-2"
            id="password"
            placeholder="请输入登录密码"
            v-model.trim="password"
          />
        </div>
        <!-- 登录和重置按钮 -->
        <div class="form-group form-inline d-flex justify-content-end">
          <button type="button" class="btn btn-secondary mr-2" @click="reset">重置</button>
          <button type="button" class="btn btn-primary" @click="login">登录</button>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: 'MyLogin',
  data() {
    return {
      username: '',
      password: ''
    }
  },
  methods: {
    reset() {
      this.username = ''
      this.password = ''
    },
    login() {
      if (this.username === 'admin' && this.password === '666666') {
        // 登录成功
        // 1. 存储 token
        localStorage.setItem('token', 'Bearer xxxx')
        // 2. 跳转到后台主页
        this.$router.push('/home')
      } else {
        // 登录失败
        localStorage.removeItem('token')
      }
    }
  }
}
</script>

<style lang="less" scoped>
.login-container {
  background-color: #35495e;
  height: 100%;
  .login-box {
    width: 400px;
    height: 250px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
    .form-login {
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      box-sizing: border-box;
    }
  }
}

.form-control {
  flex: 1;
}

.avatar-box {
  position: absolute;
  width: 100%;
  top: -65px;
  left: 0;
  .avatar {
    width: 120px;
    height: 120px;
    border-radius: 50% !important;
    box-shadow: 0 0 6px #efefef;
  }
}
</style>

退出登录

<template>
  <div class="layout-header-container d-flex justify-content-between align-items-center p-3">
    <!-- 左侧 logo 和 标题区域 -->
    <div class="layout-header-left d-flex align-items-center user-select-none">
      <!-- logo -->
      <img class="layout-header-left-img" src="../../assets/heima.png" alt="" />
      <!-- 标题 -->
      <h4 class="layout-header-left-title ml-3">黑马后台管理系统</h4>
    </div>

    <!-- 右侧按钮区域 -->
    <div class="layout-header-right">
      <button type="button" class="btn btn-light" @click="logout">退出登录</button>
    </div>
  </div>
</template>

<script>
export default {
  name: 'MyHeader',
  methods: {
    logout() {
      // 1. 清空 token
      localStorage.removeItem('token')
      // 2. 跳转到登录页面
      this.$router.push('/login')
    }
  }
}
</script>

<style lang="less" scoped>
.layout-header-container {
  height: 60px;
  border-bottom: 1px solid #eaeaea;
}

.layout-header-left-img {
  height: 50px;
}
</style>