Spring Reactive-如何在Mongodb中更新上限集合中的文档

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb-reactive</artifactId>
</dependency>

@Document(collection = "users")
public class User {
    @Id
    private String id;
    private String name;
    // 其他属性和对应的getter/setter方法
}

public interface UserRepository extends ReactiveMongoRepository<User, String> {
    Mono<User> findByName(String name);
}

@Autowired
private UserRepository userRepository;

public Mono<User> updateUser(String name) {
    return userRepository.findByName(name)
            .flatMap(user -> {
                user.setName("Tom");
                return userRepository.save(user);
            });
}