vue+springboot登录与注册功能的实现

①首先写一个登录页面

<template>
<div style="background-color: #42b983;display: flex;align-items: center;justify-content: center;height: 100vh"><div style="background-color: white;display: flex;width: 50%;height: 50%;overflow: hidden;border-radius: 5px"><div style="flex:1"><img src="@/assets/login.png" style="width: 100%"></div><div style="flex: 1;display: flex;justify-content: center;align-items: center"><el-form style="width: 80%" :model="user"><div style="font-weight: bold;font-size: 20px;margin-bottom: 20px">欢迎登录后台管理系统</div><el-form-item><el-input placeholder="请输入用户名" prefix-icon="el-icon-user" v-model="user.username"></el-input></el-form-item><el-form-item><el-input placeholder="请输入密码" prefix-icon="el-icon-lock" v-model="user.password" show-password></el-input></el-form-item><el-form-item><el-input placeholder="请输入验证码" prefix-icon="el-icon-circle-check" v-model="user.validcode"></el-input></el-form-item><el-form-item><el-button type="primary" style="width: 100%">登录</el-button></el-form-item><div style="display: flex"><div style="flex: 1">还没账号？去<span style="color: #42b983;cursor: pointer">注册</span></div><div style="text-align: right;flex: 1;color: #42b983;cursor:pointer;">忘记密码</div></div></el-form></div></div>
</div>
</template>
<script>
export default {data(){return{user:{username:'',password:'',validcode:''}}}
}
</script>
<style scoped></style>

 大致效果：

 ②引入验证码组件

在component目录下新建一个ValidCode.vue：

<template><div class="ValidCode disabled-select" style="width: 100%; height: 100%" @click="refreshCode"><span v-for="(item, index) in codeList" :key="index" :style="getStyle(item)">{{item.code}}</span></div>
</template><script>
export default {name: 'validCode',data () {return {length: 4,codeList: []}},mounted () {this.createdCode()},methods: {refreshCode () {this.createdCode()},createdCode () {let len = this.length,codeList = [],chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz0123456789',charsLen = chars.length// 生成for (let i = 0; i < len; i++) {let rgb = [Math.round(Math.random() * 220), Math.round(Math.random() * 240), Math.round(Math.random() * 200)]codeList.push({code: chars.charAt(Math.floor(Math.random() * charsLen)),color: `rgb(${rgb})`,padding: `${[Math.floor(Math.random() * 10)]}px`,transform: `rotate(${Math.floor(Math.random() * 90) - Math.floor(Math.random() * 90)}deg)`})}// 指向this.codeList = codeList// 将当前数据派发出去this.$emit('update:value', codeList.map(item => item.code).join(''))},getStyle (data) {return `color: ${data.color}; font-size: ${data.fontSize}; padding: ${data.padding}; transform: ${data.transform}`}}
}
</script><style>
.ValidCode{display: flex;justify-content: center;align-items: center;cursor: pointer;
}
.ValidCode span {display: inline-block;font-size: 18px;
}
</style>

在登录页引入：

<template>
<div style="background-color: #42b983;display: flex;align-items: center;justify-content: center;height: 100vh"><div style="background-color: white;display: flex;width: 50%;height: 50%;overflow: hidden;border-radius: 5px"><div style="flex:1"><img src="@/assets/login.png" style="width: 100%"></div><div style="flex: 1;display: flex;justify-content: center;align-items: center"><el-form style="width: 80%" :model="user"><div style="font-weight: bold;font-size: 20px;margin-bottom: 20px">欢迎登录后台管理系统</div><el-form-item><el-input placeholder="请输入用户名" prefix-icon="el-icon-user" v-model="user.username"></el-input></el-form-item><el-form-item><el-input placeholder="请输入密码" prefix-icon="el-icon-lock" v-model="user.password" show-password></el-input></el-form-item><el-form-item><div style="display: flex"><el-input placeholder="请输入验证码" prefix-icon="el-icon-circle-check" v-model="user.validCode" style="flex: 1"></el-input><div style="flex: 1;height: 32px"><valid-code @update:value="getCode"></valid-code></div></div></el-form-item><el-form-item><el-button type="primary" style="width: 100%">登录</el-button></el-form-item><div style="display: flex"><div style="flex: 1">还没账号？去<span style="color: #42b983;cursor: pointer">注册</span></div><div style="text-align: right;flex: 1;color: #42b983;cursor:pointer;">忘记密码</div></div></el-form></div></div>
</div>
</template>
<script>
import ValidCode from "@/components/ValidCode.vue";export default {name:'login-demo',components:{ValidCode},data(){return{code:'',user:{username:'',password:'',validCode:''}}},methods:{getCode(code){this.code=code}}
}
</script>
<style scoped></style>

 效果图（可以看到多了验证码）：

③springboot搭建后端接口

首先准备数据库：

CREATE TABLE `user` (`id` int(11) NOT NULL AUTO_INCREMENT,`username` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '用户名',`password` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '密码',`name` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '姓名',`phone` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '电话',`email` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '邮箱',`address` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '地址',`avatar` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '头像',PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户表';

 用IDEA创建springboot工程：

创建springboot教程

连接数据库：

application.yml：

server:port: 9090
spring:datasource:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/honey2024?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=GMT%2b8username: rootpassword: 123456

目录结构：

按照该目录创建文件夹

 CorsConfig：解决跨域问题

package com.example.springboot.common;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;@Configuration
public class CorsConfig {// 当前跨域请求最大有效时长。这里默认1天private static final long MAX_AGE = 24 * 60 * 60;@Beanpublic CorsFilter corsFilter() {UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();CorsConfiguration corsConfiguration = new CorsConfiguration();corsConfiguration.addAllowedOrigin("*"); // 1 设置访问源地址corsConfiguration.addAllowedHeader("*"); // 2 设置访问源请求头corsConfiguration.addAllowedMethod("*"); // 3 设置访问源请求方法corsConfiguration.setMaxAge(MAX_AGE);source.registerCorsConfiguration("/**", corsConfiguration); // 4 对接口配置跨域设置return new CorsFilter(source);}
}

Result：返回数据

package com.example.springboot.common;import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;/*** 接口统一返回包装类* 作者：程序员青戈*/
@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class Result {public static final String CODE_SUCCESS = "200";public static final String CODE_AUTH_ERROR = "401";public static final String CODE_SYS_ERROR = "500";private String code;private String msg;private Object data;public static Result success() {return new Result(CODE_SUCCESS, "请求成功", null);}public static Result success(Object data) {return new Result(CODE_SUCCESS, "请求成功", data);}public static Result error(String msg) {return new Result(CODE_SYS_ERROR, msg, null);}public static Result error(String code, String msg) {return new Result(code, msg, null);}public static Result error() {return new Result(CODE_SYS_ERROR, "系统错误", null);}}

WebController（controller文件夹下只用写这个）：控制登录和注册接口

package com.example.springboot.controller;import cn.hutool.core.util.StrUtil;
import com.example.springboot.common.Result;
import com.example.springboot.entity.User;
import com.example.springboot.exception.ServiceException;
import com.example.springboot.service.UserService;
import org.springframework.web.bind.annotation.*;import javax.annotation.Resource;@RestController
public class WebController {@ResourceUserService userService;@GetMapping("/")public Result hello(){return Result.success("success");}@PostMapping("/login")public Result login(@RequestBody User user){if(StrUtil.isBlank(user.getUsername())||StrUtil.isBlank(user.getPassword())){return Result.error("数据输入错误");}user=userService.login(user);return Result.success(user);}@PostMapping("/register")public Result register(@RequestBody User user){if(StrUtil.isBlank(user.getUsername())||StrUtil.isBlank(user.getPassword())){throw new ServiceException("输入不合法");}if(user.getUsername().length()>10||user.getPassword().length()>20){throw new ServiceException("长度过长");}user=userService.register(user);return Result.success(user);}
}

User：用户实体类，用来承接数据

package com.example.springboot.entity;import lombok.AllArgsConstructor;
import lombok.Data;@Data
public class User {private Integer id;private String username;private String password;private String name;private String phone;private String email;private String address;private String avatar;
}

GlobalException：引入自定义并使用

package com.example.springboot.exception;import com.example.springboot.common.Result;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;@ControllerAdvice
public class GlobalExeception {@ExceptionHandler(ServiceException.class)@ResponseBodypublic Result serviceException(ServiceException e){return Result.error("500",e.getMessage());}
}

ServiceException： 自定义异常

package com.example.springboot.exception;public class ServiceException extends RuntimeException{public ServiceException(String msg){super(msg);}
}

UserMapper：定义接口，对数据库进行增删改查

package com.example.springboot.mapper;import com.example.springboot.entity.User;
import org.apache.ibatis.annotations.*;import java.util.List;@Mapper
public interface UserMapper {@Insert("insert into `user` (username, password, name, phone, email, address, avatar) " +"values (#{username}, #{password}, #{name}, #{phone}, #{email}, #{address}, #{avatar})")void insert(User user);@Update("update `user` set username = #{username} , password = #{password} , name = #{name} , phone=#{phone} , email = #{email} , avatar=#{avatar} where id = #{id}")void updateUser(User user);@Delete("delete from `user` where id=#{id}")void deleteUser(Integer id);@Select("select * from `user` order by id desc")List<User> selectall();@Select("select * from `user` where id =#{id} order by id desc")User selectbyid(Integer id);@Select("select * from `user` where name = #{name} order by id desc")List<User> selectbyname(String name);@Select("select * from `user` where username = #{username} and name = #{name} order by id desc")List<User> selectbymore(@Param("username") String username,@Param("name") String name);@Select("select * from `user` where username like  concat('%',#{username},'%') or name like concat('%',#{name},'%') order by id desc")List<User> selectbymo(@Param("username") String username,@Param("name") String name);@Select("select * from `user` where username = #{username} order by id desc")User selectbyUsername(String username);
}

Userservice：给接口编写实体方法

package com.example.springboot.service;import com.example.springboot.entity.User;
import com.example.springboot.exception.ServiceException;
import com.example.springboot.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.RequestBody;import java.util.List;@Service
public class UserService {@AutowiredUserMapper userMapper;public void insertUser(User user){userMapper.insert(user);}public void updateUser(User user) {userMapper.updateUser(user);}public void deleteUser(Integer id) {userMapper.deleteUser(id);}public void batchdeleteUser(List<Integer> ids) {for(Integer id : ids){userMapper.deleteUser(id);}}public List<User> selectall() {return userMapper.selectall();}public User selectbyid(Integer id) {return userMapper.selectbyid(id);}public List<User> selectbyname(String name) {return userMapper.selectbyname(name);}public List<User> selectbymore(String username, String name) {return userMapper.selectbymore(username,name);}public List<User> selectbymo(String username, String name) {return userMapper.selectbymo(username,name);}public User login(User user) {User dbuser=userMapper.selectbyUsername(user.getUsername());if(dbuser == null){throw new ServiceException("账号不存在");}if(!user.getPassword().equals(dbuser.getPassword())){throw new ServiceException("账号或者密码错误");}return dbuser;}public User register(User user) {User dbuser=userMapper.selectbyUsername(user.getUsername());if(dbuser != null){throw new ServiceException("用户名已存在");}userMapper.insert(user);return user;}
}

 引入hutool：在pom.xml引进依赖

<dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.8.18</version>
</dependency>

 ④封装vue的网络请求

在vue终端安装依赖：

npm i axios

在vue中新建utils文件夹，该文件夹下新建request.js文件：

import axios from 'axios'// 创建可一个新的axios对象
const request = axios.create({baseURL: 'http://localhost:9090',   // 后端的接口地址  ip:porttimeout: 30000
})// request 拦截器
// 可以自请求发送前对请求做一些处理
// 比如统一加token，对请求参数统一加密
request.interceptors.request.use(config => {config.headers['Content-Type'] = 'application/json;charset=utf-8';// let user = localStorage.getItem("user") ? JSON.parse(localStorage.getItem("user")) : null// config.headers['token'] = 'token'  // 设置请求头return config
}, error => {console.error('request error: ' + error) // for debugreturn Promise.reject(error)
});// response 拦截器
// 可以在接口响应后统一处理结果
request.interceptors.response.use(response => {let res = response.data;// 兼容服务端返回的字符串数据if (typeof res === 'string') {res = res ? JSON.parse(res) : res}return res;},error => {console.error('response error: ' + error) // for debugreturn Promise.reject(error)}
)export default request

main.js引入：

import Vue from 'vue'
import App from './App.vue'
import router from './router'
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
import request from "@/utils/request";
Vue.config.productionTip = false
Vue.use(ElementUI,{size:'small'});
Vue.prototype.$request=request //引入request
new Vue({router,render: h => h(App)
}).$mount('#app')

登录页补充登录函数：

<template>
<div style="background-color: #42b983;display: flex;align-items: center;justify-content: center;height: 100vh"><div style="background-color: white;display: flex;width: 50%;height: 50%;overflow: hidden;border-radius: 5px"><div style="flex:1"><img src="@/assets/login.png" style="width: 100%"></div><div style="flex: 1;display: flex;justify-content: center;align-items: center"><el-form style="width: 80%" :model="user"><div style="font-weight: bold;font-size: 20px;margin-bottom: 20px">欢迎登录后台管理系统</div><el-form-item><el-input placeholder="请输入用户名" prefix-icon="el-icon-user" v-model="user.username"></el-input></el-form-item><el-form-item><el-input placeholder="请输入密码" prefix-icon="el-icon-lock" v-model="user.password" show-password></el-input></el-form-item><el-form-item><div style="display: flex"><el-input placeholder="请输入验证码" prefix-icon="el-icon-circle-check" v-model="user.validCode" style="flex: 1"></el-input><div style="flex: 1;height: 32px"><valid-code @update:value="getCode"></valid-code></div></div></el-form-item><el-form-item><el-button type="primary" style="width: 100%" @click="login">登录</el-button></el-form-item><div style="display: flex"><div style="flex: 1">还没账号？去<span style="color: #42b983;cursor: pointer">注册</span></div><div style="text-align: right;flex: 1;color: #42b983;cursor:pointer;">忘记密码</div></div></el-form></div></div>
</div>
</template>
<script>
import ValidCode from "@/components/ValidCode.vue";export default {name:'login-demo',components:{ValidCode},data(){return{code:'',user:{username:'',password:'',validCode:''}}},methods:{getCode(code){this.code=code},login(){this.$request.post('/login',this.user).then(res=>{console.log(res)})}}
}
</script>
<style scoped></style>

效果图：

⑤表单验证

 填写完表单验证规则后就是最终代码：

<template>
<div style="background-color: #42b983;display: flex;align-items: center;justify-content: center;height: 100vh"><div style="background-color: white;display: flex;width: 50%;height: 50%;overflow: hidden;border-radius: 5px"><div style="flex:1"><img src="@/assets/login.png" style="width: 100%"></div><div style="flex: 1;display: flex;justify-content: center;align-items: center"><el-form style="width: 80%" :model="user" :rules="rules" ref="loginRef"><div style="font-weight: bold;font-size: 20px;margin-bottom: 20px">欢迎登录后台管理系统</div><el-form-item prop="username"><el-input placeholder="请输入用户名" prefix-icon="el-icon-user" v-model="user.username"></el-input></el-form-item><el-form-item prop="password"><el-input placeholder="请输入密码" prefix-icon="el-icon-lock" v-model="user.password" show-password></el-input></el-form-item><el-form-item prop="code"><div style="display: flex"><el-input placeholder="请输入验证码" prefix-icon="el-icon-circle-check" v-model="user.code" style="flex: 1"></el-input><div style="flex: 1;height: 32px"><valid-code @update:value="getCode"></valid-code></div></div></el-form-item><el-form-item><el-button type="primary" style="width: 100%" @click="login">登录</el-button></el-form-item><div style="display: flex"><div style="flex: 1">还没账号？去<span style="color: #42b983;cursor: pointer">注册</span></div><div style="text-align: right;flex: 1;color: #42b983;cursor:pointer;">忘记密码</div></div></el-form></div></div>
</div>
</template>
<script>
import ValidCode from "@/components/ValidCode.vue";export default {name:'login-demo',components:{ValidCode},data(){const validateCode = (rule, value, callback) => {if (value === '') {callback(new Error('请输入验证码'));} else if(value.toLowerCase() !== this.code){callback(new Error('验证码错误'));} else {callback();}};return{code:'',user:{username:'',password:'',code:''},rules:{username:[{required:true,trigger:'blur',message:'请输入用户名'}],password:[{required:true,trigger:'blur',message:'请输入密码'}],code:[{validator:validateCode,trigger:'blur'}],}}},methods:{getCode(code){this.code=code.toLowerCase()},login(){this.$refs['loginRef'].validate((valid)=>{if(valid){this.$request.post("/login",this.user).then(res=>{if(res.code === '200'){this.$router.push('/')this.$message.success('登录成功')localStorage.setItem('honey-user',JSON.stringify(res.data))}else{this.$message.error(res.msg)}console.log(res);})}})}}
}
</script>
<style scoped></style>

注册页面与登录页面代码逻辑相似：

<template><div style="display: flex;align-items: center;justify-content: center;background-color: #669fefff;height: 100vh;"><div style="display: flex;width: 50%;background-color: white;border-radius: 5px;overflow: hidden;"><div style="flex: 1;"><img src="@/assets/register.png" alt="" style="width: 100%;"></div><div style="flex: 1;display: flex;align-items: center;justify-content: center;"><el-form :model="user" style="width: 80%;" :rules="rules" ref="registerRef"><div style="font-weight: bold; font-size: 20px;margin-bottom: 20px;text-align: center;">欢迎注册后台管理系统</div><el-form-item prop="username"><el-input placeholder="请输入用户名" v-model="user.username" prefix-icon="el-icon-user"></el-input></el-form-item><el-form-item prop="password"><el-input placeholder="请输入密码" v-model="user.password" show-password prefix-icon="el-icon-lock"></el-input></el-form-item><el-form-item prop="confirmPass"><el-input placeholder="请确认密码" v-model="user.confirmPass"></el-input></el-form-item><el-form-item><el-button type="primary" style="width: 100%;" @click="register">注册</el-button></el-form-item><div style="display: flex;"><div style="flex: 1;text-align: left">已没有账号？去<span style="color:aquamarine;cursor: pointer;" @click="$router.push('/login')">登录</span></div></div></el-form></div></div></div>
</template><script>
export default {name:'register',data() {const validatePass = (rule, value, callback) => {if (value === '') {callback(new Error('请输入确认密码'));} else if(value !== this.user.password){callback(new Error('两次密码不一致'));} else {callback();}};return {code:'',user: {code:'',username: '',password: '',confirmPass:''},rules:{username:[{required:'true',message:'请输入账号',trigger:'blur'}],password:[{required:'true',message:'请输入密码',trigger:'blur'}],confirmPass:[{validator:validatePass,trigger:'blur'}],},}},methods:{getCode(code){this.code=code.toLowerCase()},register(){this.$refs['registerRef'].validate((valid=>{if(valid){this.$request.post("/register",this.user).then(res=>{if(res.code === '200'){this.$router.push('/login')this.$message.success('注册成功')}else{this.$message.error(res.msg)}console.log(res);})}}))}}
}
</script><style scoped></style>

最终效果：