mongodb在将其发送到后端之前是否从引用中获取所有数据，如果是，则如何在Spring Boot中对其进行控制

问题描述

 {
        "id": "5fa0f5a843d8584b9aac129b","username": "testUser3","fullName": "test User Three","profileImageURL": null,"telephoneNumber": "0773234567","email": "[e-mail]","password": "ENCRYPTED","resetCode": 0,"emailVerificationCode": 0,"updated": false,"roles": [
            {
                "id": "5f89e90f5603281a4b6ccc9a","name": "ROLE_TEAM_MEMBER"
            },{
                "id": "5f89e90f5603281a4b6ccc9b","name": "ROLE_TEAM_leader"
            }
        ],"verified": true,"emailVerified": false
    },

在这里您可以看到，当我检索一个用户对象时，它还会向我发送所有角色的详细信息（OID和名称），如果我在检索数据时不想要这些角色怎么办

下面是用户模型

@Document(collection = "users")
public class User {
    @Id
    private String id;

    @NotBlank
    @Indexed(unique = true)
    @Size(min = 5,max = 25)
    private String username;

    @NotBlank
    @Size(min = 5,max = 100)
    private String fullName;

    //optional
    private String profileImageURL;

    //optional
    @Size(min = 9,max = 14)
    @Indexed(unique = true)
    private String telephoneNumber;

    @NotBlank
    @Email
    @Indexed(unique = true)
    private String email;

    @NotBlank
    @Size(max = 120)
    private String password;

    private boolean isverified = false;

    private boolean isEmailVerified = false;

    //code for password reset functionality
    @Size(min = 6,max = 6)
    @Indexed(unique = true)
    private int resetCode;

    //code for verifying email address by sending a link
    @Size(min = 6,max = 6)
    @Indexed(unique = true)
    private int emailVerificationCode;

    private boolean updated = false;

    @DBRef
    private Set<Role> roles = new HashSet<>();

下面是UserRepo

public interface UserRepository extends MongoRepository<User,String> {

    Optional<User> findByUsername(String username);

    Optional<User> findById(String username);

    Optional<User> findByEmail(String username);

    Optional<User> findByTelephoneNumber(String username);

    Optional<User> findByEmailVerificationCode(int code);

    Optional<User> findByResetCode(int code);

    Boolean existsByUsername(String username);

    Boolean existsByEmail(String email);

    Boolean existsByTelephoneNumber(String email);

    Optional<List<User>> findAllByRolesNotContaining(Role role);
   
}

我想检索没有引用列表的用户，如何使用spring boot mongodb做到这一点

以下是随机字符串，无需阅读

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解决方法

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