findCurrentUserBooks();}"> findCurrentUserBooks();}"> findCurrentUserBooks();}"> 
public interface BookRepository extends JpaRepository<Book, Long> {   @Query("select b from Book b where b.author.id = ?#{principal.accountNonExpired.id}}")   List<Book> findCurrentUserBooks();}

스프링 시큐리티가 지원하는 스프링 데이터와 연동

의존성 추가

<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-data</artifactId>
    <version>${spring-security.version}</version>
</dependency>

연관관계를 하나 만들자.

@Entity
public class Book {

	@Id @GeneratedValue
	private Long id;

	private String title;

	@ManyToOne
	private Account author;
}

public class DefaultDataGenerator implements ApplicationRunner {

	@Autowired
	AccountService accountService;

	@Autowired
	BookRepository bookRepository;

	@Override
	public void run(ApplicationArguments args) throws Exception {
		// keesun - spring
		// whiteship - hibernate

		Account keesun = createUser("keesun");
		Account whiteship = createUser("whiteship");

		createBook("spring", keesun);
		createBook("hibernate", whiteship);
	}

	private Account createUser(String username) {
		Account account = new Account();
		account.setUsername(username);
		account.setPassword("123");
		account.setRole("USER");

		return accountService.createAccount(account);
	}

	private void createBook(String title, Account author) {
		Book book = new Book();
		book.setTitle(title);
		book.setAuthor(author);
		bookRepository.save(book);
	}
}

이러한 관계에서 /user 핸들러에서 뷰를 보여줄 때 책의 목록을 같이 보여주고 싶을 때

public interface BookRepository extends JpaRepository<Book, Long> {

	@Query("select b from Book b where b.author.id = ?#{principal.account.id}}")
	List<Book> findCurrentUserBooks();
}