springboot登录注册项目代码

很抱歉，我无法提供完整的代码，但我可以给出一个基本的示例代码，帮助您快速入门。

首先，需要在pom.xml中引入Spring Boot、Spring Security、MyBatis等依赖。

<dependencies>
    <!-- Spring Boot -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    
    <!-- Spring Security -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    
    <!-- MyBatis -->
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>2.2.0</version>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid-spring-boot-starter</artifactId>
        <version>1.2.6</version>
    </dependency>
</dependencies>

接着，创建一个用户实体类User，包含id、用户名和密码三个属性。

public class User {
    private int id;
    private String username;
    private String password;
    
    // getter和setter省略
}

然后，创建一个用户Dao接口UserDao，定义增删改查等方法。

public interface UserDao {
    int addUser(User user);
    int deleteUser(int id);
    int updateUser(User user);
    User getUserById(int id);
    User getUserByUsername(String username);
}

接着，创建一个用户Service接口UserService，定义注册和登录等方法。

public interface UserService {
    int register(User user);
    User login(String username, String password);
}

然后，创建一个用户ServiceImpl类UserServiceImpl，实现UserService接口。

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;
    
    @Override
    public int register(User user) {
        User u = userDao.getUserByUsername(user.getUsername());
        if (u != null) {
            throw new RuntimeException("用户名已存在");
        }
        return userDao.addUser(user);
    }
    
    @Override
    public User login(String username, String password) {
        User user = userDao.getUserByUsername(username);
        if (user == null) {
            throw new RuntimeException("用户名不存在");
        }
        if (!user.getPassword().equals(password)) {
            throw new RuntimeException("密码不正确");
        }
        return user;
    }
}

接着，创建一个WebSecurityConfig类，配置Spring Security。

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserService userService;
    
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userService).passwordEncoder(new BCryptPasswordEncoder());
    }
    
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/register", "/login").permitAll()
            .anyRequest().authenticated()
            .and()
            .formLogin()
            .loginPage("/login")
            .defaultSuccessUrl("/")
            .permitAll()
            .and()
            .logout()
            .permitAll();
    }
}

最后，创建一个UserController类，处理注册和登录请求。

@Controller
public class UserController {
    @Autowired
    private UserService userService;
    
    @GetMapping("/register")
    public String registerPage() {
        return "register";
    }
    
    @PostMapping("/register")
    public String register(User user) {
        userService.register(user);
        return "redirect:/login";
    }
    
    @GetMapping("/login")
    public String loginPage() {
        return "login";
    }
    
    @PostMapping("/login")
    public String login(String username, String password, HttpSession session) {
        User user = userService.login(username, password);
        session.setAttribute("user", user);
        return "redirect:/";
    }
}

以上是一个基本的Spring Boot登录注册项目的示例代码，仅供参考。具体实现还需要根据实际需求进行修改和完善。