一、页面编写

1. 编写登录页面
   src 目录下新建目录 views
   编写 views/admin/Login.vue

<template>
  <div class="container">
    <el-form ref="form" :model="form" label-width="80px" class="login-page" >
      <h2>Boot电商后台登录</h2>
      <el-form-item label="用  户:" prop="username">
        <el-input v-model="form.username" placeholder="请输入用户名">
          <el-button slot="prepend" icon="el-icon-user"></el-button>
        </el-input>
      </el-form-item>
      <el-form-item label="密 码:">
        <el-input v-model="form.password" type="password" placeholder="请输入密码">
          <el-button slot="prepend" icon="el-icon-key"></el-button>
        </el-input>
      </el-form-item>
      <el-button type="primary" icon="el-icon-user-solid" @click="login">登 录</el-button>
    </el-form>
  </div>
</template>
<script>
export default {
  data() {
    return {
      form: {
        username: "",
        password: ""
      }
    };
  },
  methods: {
    }
  }
};
</script>
<style scoped>
.container {
  margin-top: 200px;
  width: 100%;
  height: 100%;
}
.login-page {
  border-radius: 5px;
  margin: auto;
  width: 350px;
  padding: 35px 55px 15px;
  background: #fff;
  border: 1px solid #eaeaea;
  box-shadow: 0 0 25px #cac6c6;
}
</style>

2. 添加路由
   访问 login 要跳转到登录页面
   修改 router/index.js 为

import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

export default new Router({
  mode: 'history',
  base: process.env.BASE_URL,
  routes: [
    {
      path: '/',
      name: 'login',
      component: () => import('./views/Login.vue')
    }
  ]
})

3. 数据校验
   from元素添加校验属性：:rules="rules"

  <el-form ref="form" :model="form" label-width="80px" class="login-page" :rules="rules">

元素添加：prop="username"

 <el-form-item label="用  户:" prop="username">

data添加属性:

  data() {
    return {
      form: {
        username: "",
        password: ""
      },
      rules: {
        username: [{ required: true, message: "请输入用户名", trigger: "blur" }]
      }
    };
  },

methods添加校验方法：

  methods: {
    login() {
      // 数据校验
      this.$refs.form.validate(valid => {
        if (valid) {
          console.log('验证成功')
        }
      });
    }
  }

二、显示结果

显示结果