如何使用Spring安全性从Spring Data JPA加载经过身份验证的用户的实体模型，以便在其他JPA存储库中使用？

import org.springframework.security.core.userdetails.UserDetails;

public class CustomUser implements UserDetails {
    private String username;
    private String password;

    // 省略构造函数和其他属性的getter和setter方法

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        // 返回用户的权限列表，可以根据实际情况进行定制
        return Collections.emptyList();
    }

    @Override
    public String getUsername() {
        return username;
    }

    // 省略其他UserDetails接口方法的实现
}

import org.springframework.data.jpa.repository.JpaRepository;

public interface UserRepository extends JpaRepository<CustomUser, Long> {
    CustomUser findByUsername(String username);
}

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserRepository userRepository;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService()).passwordEncoder(passwordEncoder());
    }

    @Bean
    @Override
    public UserDetailsService userDetailsService() {
        return username -> userRepository.findByUsername(username);
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}