黑马大事件学习-15（前端登录页面）

成品效果

环境准备

创建vue工程

安装依赖

elementplus

配置（main.js）

import { createApp } from 'vue'
import App from './App.vue'
import './assets/main.css'
import ElementPlus from 'element-plus'
import 'element-plus/dist/index.css'

const app=createApp(App);
app.use(ElementPlus)
app.mount('#app')

axios

sass

调整目录

导入相应资料（在资料中）

删除App.vue内容

(写完记得保存）

注册

在接口文档中获取页面搭建代码

部分代码：

引用

完善前端登录校验

<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)
//定义数据模型
const registerData = ref({
  username: '',
  password: '',
  rePassword: ''
})
//密码校验方法
const checkRePassword = (rule, value, callback) => {
    if(value===''){
        callback(new Error('请再次确认密码'))
    }else if(value!==registerData.value.password){
        callback(new Error('请确保两次输入的密码一致'))
    }else{
        callback()
    }
}
//定义表单校验规则
const rules={
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
    {min:5,max:16, message: '长度为5-16位非空字符', trigger: 'blur' }
  ],
  password: [
     { required: true, message: '请输入密码', trigger: 'blur' },
    {min:5,max:16, message: '长度为5-16位非空字符', trigger: 'blur' }
  ],
  rePassword: [
    {validator:checkRePassword, trigger: 'blur'}
  ]
}
</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">
            <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister":model="registerData" :rules="rules">
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名"v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码"v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item prop="rePassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码"v-model="registerData.rePassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space>
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else>
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item>
                    <el-input :prefix-icon="User" placeholder="请输入用户名"></el-input>
                </el-form-item>
                <el-form-item>
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space>登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
            url('@/assets/login_bg.jpg') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>

验证

注册接口调用

新建文件夹

//导入request.js工具
import request from '@/utils/request.js'

//提供调用注册接口的函数
export const userRegisterService = (registerData)=>{
    // 借助于UrlsearchParams完成传递
    const params=new URLSearchParams()
    for(let key in registerData){
        params.append(key,registerData[key])
    }
    return request.post('/user/register',params)
}

在页面中引用

//调用后台接口完成注册
import {userRegisterService} from '@/api/user.js'
const register = async()=>{
    //registerData是一个响应式对象，如果获取值，需要.value
    let result=await userRegisterService(registerData.value);
    if(result.code===0){
        //注册成功
        alert(result.msg ? result.msg:'注册成功');
    }else{
        //注册失败
        alert('注册失败');

    }

跨域问题解决

request.js

vite.config.js

测试

登录

Login.vue

完整修改代码

//调用后台接口完成注册
import {userRegisterService,userLoginService} from '@/api/user.js'


//调用后台接口完成登录
const login = async()=>{
    let result=await userLoginService(registerData.value);
    alert(result.msg ? result.msg:'注册成功');
}


//定义函数，清空数据模型的数据
const clearRegisterData = ()=>{
    registerData.value={
        username: '',
        password: '',
        rePassword: ''
    }
}



           <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>


     <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true;clearRegisterData()">
                        注册 →
                    </el-link>
                </el-form-item>

user.js

//提供调用登录接口的函数
export const userLoginService = (loginData)=>{
    // 借助UrlsearchParams完成传递
    const params=new URLSearchParams()
    for(let key in loginData){
        params.append(key,loginData[key])
    }
    return request.post('/user/login',params)
}

测试

优化axios响应拦截器

reguest.js

login.vue

修改弹窗

import { ElMessage } from 'element-plus'

   // alert(result.data.msg ? result.msg:'服务异常')
        ElMessage.error(result.data.msg ? result.msg:'服务异常')

  // alert(result.msg ? result.msg:'注册成功');
    ElMessage.success(result.msg ? result.msg:'注册成功');

测试