Java SpringBoot查询3个表并以json格式返回结果

@Entity
@Table(name = "table1")
public class Table1 {
    @Id
    private Long id;
    private String field1;
    // 其他字段和对应的getter/setter方法
}

@Entity
@Table(name = "table2")
public class Table2 {
    @Id
    private Long id;
    private String field2;
    // 其他字段和对应的getter/setter方法
}

@Entity
@Table(name = "table3")
public class Table3 {
    @Id
    private Long id;
    private String field3;
    // 其他字段和对应的getter/setter方法
}

public interface MyRepository extends JpaRepository<Table1, Long> {
    List<Table1> findByField1(String field1);
    
    @Query("SELECT t1, t2, t3 FROM Table1 t1 JOIN Table2 t2 ON t1.id = t2.id JOIN Table3 t3 ON t1.id = t3.id")
    List<Object[]> findTables();
}

@RestController
public class MyController {
    @Autowired
    private MyRepository myRepository;
    
    @GetMapping("/query")
    public ResponseEntity<List<Object[]>> queryTables() {
        List<Object[]> tables = myRepository.findTables();
        return ResponseEntity.ok(tables);
    }
}