引入vue-router

yarn add vue-router@next

添加登录路由

1. src目录下新建router文件夹
2. router文件夹下新建index.js

import { createRouter, createWebHistory } from "vue-router";

const routes = [
  {
    path: "/login",
    name: "Login",
    component: () => import("../views/login.vue"),
  },

  { path: "/:catchAll(.*)", redirect: "/404", hidden: true },
];

const router = createRouter({
  history: createWebHistory(), //history模式使用HTML5模式
  routes,
});

export function resetRouter() {
  const newRouter = createRouter({
    history: createWebHistory(),
    routes,
  });

  router.matcher = newRouter.matcher; // reset router
}

// router.beforeEach(async(to, from, next) => {

// })

export default router;

修改main.js

import { createApp } from "vue";
import App from "./App.vue";
import router from "./router";
import installElementPlus from "./plugins/element";

import "./styles/index.scss";

const app = createApp(App);

installElementPlus(app);

app.use(router).mount("#app");

修改App.vue

<template>
  <router-view></router-view>
</template>

<script setup>

// This starter template is using Vue 3 experimental <script setup> SFCs
// Check out https://github.com/vuejs/rfcs/blob/script-setup-2/active-rfcs/0000-script-setup.md
</script>

<style>

</style>

添加页面

1. src目录下新建views文件夹用于存放页面组件
2. views文件夹下新建login.vue

<template>
  <div class="login-container">
    <el-form ref="myForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <div class="title-container">
        <h3 class="title">后台登录</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="Username"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @click="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click="handleLogin">登 录</el-button>
    </el-form>
  </div>
</template>

<script>
import { reactive, ref, toRefs } from 'vue'
import { useStore } from 'vuex'
import { useRouter } from 'vue-router'

export default {
  name: 'Login',
   setup() {
    const data = reactive({
      loginForm: {
        username: 'admin',
        password: '111111'
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', message: "请填写账号" }],
        password: [{ required: true, trigger: 'blur', message: "请填写密码" }]
      },
      loading: false,
      passwordType: 'password',
      redirect: '',
    })

    const myForm = ref(null)

    const showPwd = () => {
      if (data.passwordType === 'password') {
        data.passwordType = 'text'
      } else {
        data.passwordType = 'password'
      }
    }

    const router = useRouter()
    const store = useStore()

    const handleLogin = () => {
      myForm.value.validate(valid => {
        if (valid) {
          data.loading = true
          store.dispatch('user/login', data.loginForm).then(() => {
            router.push({
              path: '/'
            })
          })
        }
      })
    }

    return {
      ...toRefs(data),
      myForm,
      showPwd,
      handleLogin
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
$bg:#283443;
$light_gray:#fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg:#F7F9FB;
$dark_gray:#484949;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  position: relative;

  .login-form {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 520px;
    transform: translate(-50%, -50%);
    padding: 20px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 10px;
    background-color: rgba(37, 37, 38, 0.8);
    box-shadow: 5px 5px 5px rgba(37, 37, 38, 0.4);
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>

运行项目

yarn dev

image.png

项目参考：vue-admin-template
我的博客：https://www.charmingcheng.top