1.1 登录接口

//导入request.js请求工具
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);
}//提供调用登录接口的函数
export const userLoginService = (loginData)=>{const params = new URLSearchParams();for(let key in loginData){params.append(key,loginData[key])}return request.post('/user/login',params)
}

2.1 编写页面

2.2 绑定数据模型并校验

2.3 清空表单内的数据

2.4 调用登录接口

```html
<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: ''
})//校验密码的函数
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样'))} 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' }]
}//调用后台接口,完成注册
import { userRegisterService, userLoginService} from '@/api/user.js'
const register = async () => {//registerData是一个响应式对象,如果要获取值,需要.valuelet result = await userRegisterService(registerData.value);if (result.code === 0) {//成功了alert(result.msg ? result.msg : '注册成功');}else{//失败了alert('注册失败')} //alert(result.msg ? result.msg : '注册成功');// ElMessage.success(result.msg ? result.msg : '注册成功')
}//绑定数据,复用注册表单的数据模型
//表单数据校验
//登录函数
// import {useTokenStore} from '@/stores/token.js'
// import {useRouter} from 'vue-router'
// const router = useRouter()
// const tokenStore = useTokenStore();
const login =async ()=>{//调用接口,完成登录let result =  await userLoginService(registerData.value);if(result.code===0){alert(result.msg? result.msg : '登录成功')}else{alert('登录失败')} 
//    //alert(result.msg? result.msg : '登录成功')
//    ElMessage.success(result.msg ? result.msg : '登录成功')
//    //把得到的token存储到pinia中
//    tokenStore.setToken(result.data)
//    //跳转到首页 路由完成跳转
//    router.push('/')
}//定义函数,清空数据模型的数据
const clearRegisterData = ()=>{registerData.value={username:'',password:'',rePassword:''}
}</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 @click="register">注册</el-button></el-form-item><el-form-item class="flex"><el-link type="info" :underline="false" @click="isRegister = false;clearRegisterData()">← 返回</el-link></el-form-item></el-form><!-- 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></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>
```

3.1 修改响应拦截器以及提示框

//定制请求的实例//导入axios  npm install axios
import axios from 'axios';
import { ElMessage } from 'element-plus'
//定义一个变量,记录公共的前缀  ,  baseURL
const baseURL = '/api';
const instance = axios.create({baseURL})//添加响应拦截器
instance.interceptors.response.use(result=>{if(result.data.code===0){return result.data;}ElMessage.error(result.data.msg?result.data.msg:'服务异常')return Promise.reject(result.data)},err=>{alert('服务异常');return Promise.reject(err);//异步的状态转化成失败的状态}
)export default instance;