@Indexed 嵌套属性在 mongo 的 Spring-data 中不起作用

Java
@Document(collection = "users")
public class User {
  
  @Id
  private String id;
  
  private String name;
  
  @Indexed
  private Address address;
  
  // getters and setters
}
public class Address {
  
  private String street;
  
  private String city;
  
  // getters and setters
}
public interface UserRepository extends MongoRepository<User, String> {
  
  List<User> findByAddressCity(String city);
  
  // other query methods
}
@SpringBootApplication
public class Application implements CommandLineRunner {
  
  @Autowired
  private UserRepository userRepository;
  
  public static void mAIn(String[] args) {
    SpringApplication.run(Application.class, args);
  }
  
  @Override
  public void run(String... args) throws Exception {
    // 创建一个用户
    User user = new User();
    user.setName("John Doe");
    
    Address address = new Address();
    address.setStreet("123 MAIn Street");
    address.setcity("New York");
    
    user.setAddress(address);
    
    // 保存用户
    userRepository.save(user);
    
    // 查询具有指定城市的用户
    List<User> users = userRepository.findByAddressCity("New York");
    System.out.println(users);
  }
}