Springboot3+vue3实现登录注册功能

登录

页面 Login.vue

<template>
  <div class="bg">
    <div style="width: 350px;background-color: #ffffff;opacity:0.8;border-radius: 5px;box-shadow: 0 0 10px rgba(0,0,0,0.1);padding:40px 20px">
      <el-form ref="formRef":model="data.form" :rules="data.rules">
        <div style="margin-bottom: 40px;text-align: center;font-weight: bold;font-size: 24px">欢 迎 登 录</div>
        <el-form-item prop="username">
          <el-input size="large" v-model="data.form.username" autocomplete="off" prefix-icon="User" placeholder="请输入账号"/>
        </el-form-item>
        <el-form-item prop="password">
          <el-input size="large" show-password v-model="data.form.password" autocomplete="off" prefix-icon="Lock" placeholder="请输入密码"/>
        </el-form-item>
        <div style="margin-bottom: 20px">
          <el-button style="width: 100%" size="large" type="primary" @click="login">登 录</el-button>
        </div>
        <div style="text-align: right">
          还没有账号？请<a style="color: #274afa" href="/register">注册</a>
        </div>
      </el-form>
    </div>
  </div>
</template>

<script setup>
import {reactive,ref} from "vue";
import request from "@/utils/request.js";
import {ElMessage} from "element-plus";
import router from "@/router/index.js";

const formRef = ref()

const data = reactive({
  form:{},
  rules: {
    username: [
      { required: true, message: '请输入账号', trigger: 'blur'}
    ],
    password: [
      { required: true, message: '请输入密码', trigger: 'blur'}
    ],
  }
})

const login = () => {
  request.post('/login',data.form).then(res => {
    if (res.code === '200'){
     //存储用户信息
      localStorage.setItem("code_user",JSON.stringify(res.data || {}))
      ElMessage.success('登录成功')
      router.push('/')
    }else {
      ElMessage.error(res.msg)
    }
  })
}
</script>

<style>
.bg{
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background-image: url("@/assets/imgs/bg.png");
  background-size: cover;
}
</style>

存储用户信息

登录接口

controller

    @PostMapping("/login")
    public Result login(@RequestBody Account account){
        Account dbAccount =null;
        if ("ADMIN".equals(account.getRole())){
            dbAccount = adminService.login(account);
        }else if ("USER".equals(account.getRole())){
            dbAccount = userService.login(account);
        }else {
            throw new CustomerException("非法请求");
        }
        return Result.success(dbAccount);
    }

service

  public Admin login(Account account) {
        //验证账号是否存在
        Admin dbAdmin = adminMapper.selectByUsername(account.getUsername());
        if(dbAdmin == null){
            throw new CustomerException("账号不存在");
        }
        //验证密码是否正确
        if(!dbAdmin.getPassword().equals(account.getPassword())){
            throw new CustomerException("账号或密码错误");
        }
        return dbAdmin;
    }

模仿管理员开发用户管理

数据库表user

CREATE TABLE `user` (
  `id` int NOT NULL AUTO_INCREMENT COMMENT 'ID',
  `username` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '账号',
  `password` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '密码',
  `name` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '名称',
  `phone` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '手机',
  `email` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '邮箱',
  `role`  varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '角色',
  PRIMARY KEY (`id`),
  UNIQUE KEY `username_index` (`username`) USING BTREE COMMENT '账号'
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='管理员信息';

User 相关的接口 和 管理页面

开发过程：复制 Admin 相关的 Entity、Controller、Service、Mapper、Mapper.xml，然后改名 Admin -> User n即可

注意 UserService 的 add 方法 和 AdminService 的 add 方法 是不一样的
user

 public void add(User user) {
        //根据新的账号查询数据库，是否存在同样账号的数据
      User dbUser = userMapper.selectByUsername(user.getUsername());
      if(dbUser != null){
          throw new CustomerException("账号重复");
      }
        //默认密码 user
        if (StrUtil.isBlank(user.getPassword())) {
            user.setPassword("123");
        }
        if (StrUtil.isBlank(user.getName())) {
            user.setName(user.getUsername());
        }
        user.setRole("USER");
        userMapper.insert(user);
    }

admin

    public void add(Admin admin) {
        //根据新的账号查询数据库，是否存在同样账号的数据
      Admin dbAdmin = adminMapper.selectByUsername(admin.getUsername());
      if(dbAdmin != null){
          throw new CustomerException("账号重复");
      }
        //默认密码 admin
        if (StrUtil.isBlank(admin.getPassword())) {
            admin.setPassword("admin");
        }
        admin.setRole("ADMIN");
        adminMapper.insert(admin);
    }

**注意在 AdminService.xml 和 UserService.xml里面补充 role

**遇到“未找到接口”的问题

这是因为没有重启后台，重启即可。还有可能是没有写对应的接口

注册

页面 Register.vue

<template>
  <div class="bg">
    <div style="width: 350px;background-color: #ffffff;opacity:0.8;border-radius: 5px;box-shadow: 0 0 10px rgba(0,0,0,0.1);padding:40px 20px">
      <el-form ref="formRef":model="data.form" :rules="data.rules">
        <div style="margin-bottom: 40px;text-align: center;font-weight: bold;font-size: 24px">欢 迎 登 录</div>
        <el-form-item prop="username">
          <el-input size="large" v-model="data.form.username" autocomplete="off" prefix-icon="User" placeholder="请输入账号"/>
        </el-form-item>
        <el-form-item prop="password">
          <el-input size="large" show-password v-model="data.form.password" autocomplete="off" prefix-icon="Lock" placeholder="请输入密码"/>
        </el-form-item>
        <el-form-item prop="role">
          <el-select size="large" style="width: 100%" v-model="data.form.role">
            <el-option label="管理员" value="ADMIN"></el-option>
            <el-option label="普通用户" value="USER"></el-option>
          </el-select>
        </el-form-item>
        <div style="margin-bottom: 20px">
          <el-button style="width: 100%" size="large" type="primary" @click="login">登 录</el-button>
        </div>
        <div style="text-align: right">
          还没有账号？请<a style="color: #274afa" href="/register">注册</a>
        </div>
      </el-form>
    </div>
  </div>
</template>

<script setup>
import {reactive,ref} from "vue";
import request from "@/utils/request.js";
import {ElMessage} from "element-plus";
import router from "@/router/index.js";

const formRef = ref()

const data = reactive({
  form:{ role:'ADMIN'},
  rules: {
    username: [
      { required: true, message: '请输入账号', trigger: 'blur'}
    ],
    password: [
      { required: true, message: '请输入密码', trigger: 'blur'}
    ],
  }
})

const login = () => {
  formRef.value.validate((valid) => {
    if(valid){
      request.post('/login',data.form).then(res => {
        if (res.code === '200'){
          //存储用户信息
          localStorage.setItem("code_user",JSON.stringify(res.data || {}))
          ElMessage.success('登录成功')
          router.push('/')
        }else {
          ElMessage.error(res.msg)
        }
      })
    }
  })

}
</script>

<style>
.bg{
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background-image: url("@/assets/imgs/bg.png");
  background-size: cover;
}
</style>

注册接口

controller

 @PostMapping("/register")
    public Result register(@RequestBody User user){
        userService.register(user);
        return Result.success();
    }

service

  public void register(User user) {
        this.add(user);
    }

自定义错误

不是系统错误，不是代码的 bug，这是我们给前端抛出的错误信息