Hibernate StackOverflowError с отображением @OneToMany и @ManyToOne - PullRequest
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Hibernate StackOverflowError с отображением @OneToMany и @ManyToOne

0 голосов
/ 06 мая 2019

Сущности

У меня есть три сущности User, Permission и UserPermission. 

[User] --(OneToMany)--> [UserPermission]
[UserPermission] --(ManyToOne)--> [User]
[UserPermission] --(ManyToOne)--> [Permission]

Это упрощенные реализации: 

@Entity
@JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
@NoArgsConstructor @RequiredArgsConstructor @AllArgsConstructor
public class User {
    @Id
    @NonNull @NotNull
    private String id;

    // ... Other non pk fields

    @JsonIgnore
    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @JoinColumn(name = "user", referencedColumnName = "id")
    private Collection<UserPermission> permissions;
}

@Entity @IdClass(UserPermission.PK.class)
@JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
@NoArgsConstructor @AllArgsConstructor @RequiredArgsConstructor
public class UserPermission {
    @Id @NonNull @NotNull
    @ManyToOne
    @JoinColumn(name = "user", updatable = false, insertable = false)
    private User user;

    @Id @NonNull @NotNull
    @ManyToOne
    @JoinColumn(name = "permission", updatable = false, insertable = false)
    private Permission permission;

    // ... Other non pk fields

    @Getter @Setter @NoArgsConstructor @AllArgsConstructor
    public static class PK implements Serializable {
        private User user;

        private Permission permission;
    }
}

@Entity
@JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
@NoArgsConstructor @AllArgsConstructor @RequiredArgsConstructor
public class Permission {
    @Id
    @NonNull @NotNull
    private String id;

    // ... Other non pk fields
}

Проблема

Когда я пытаюсь обновить UserPermission, используя метод org.springframework.data.repository.CrudRepository.save(S): 

@Override
public T upd(ID id, T entity) {
    entity.setPk(id);
    return repository.save(entity);
}

, я получаю следующее исключение: 

java.lang.StackOverflowError: null
    at java.lang.Character.isWhitespace(Character.java:6789) ~[na:1.8.0_151]
    at java.lang.Character.isWhitespace(Character.java:6757) ~[na:1.8.0_151]
    at org.postgresql.core.Parser.parseJdbcSql(Parser.java:82) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.core.CachedQueryCreateAction.create(CachedQueryCreateAction.java:63) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.core.CachedQueryCreateAction.create(CachedQueryCreateAction.java:17) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.util.LruCache.borrow(LruCache.java:115) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.core.QueryExecutorBase.borrowQuery(QueryExecutorBase.java:271) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.jdbc.PgConnection.borrowQuery(PgConnection.java:146) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.jdbc.PgPreparedStatement.<init>(PgPreparedStatement.java:78) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.jdbc.PgConnection.prepareStatement(PgConnection.java:1223) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.jdbc.PgConnection.prepareStatement(PgConnection.java:1681) ~[postgresql-42.2.5.jar:42.2.5]
    at org.postgresql.jdbc.PgConnection.prepareStatement(PgConnection.java:371) ~[postgresql-42.2.5.jar:42.2.5]
    at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:311) ~[HikariCP-3.2.0.jar:na]
    at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) ~[HikariCP-3.2.0.jar:na]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:146) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:172) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:148) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1984) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1914) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1892) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQuery(Loader.java:937) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:310) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.loadEntity(Loader.java:2281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:64) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:54) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4269) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:511) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:481) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:222) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:124) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:92) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1257) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1140) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]

    at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:682) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.EntityType.resolve(EntityType.java:464) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.ManyToOneType.resolve(ManyToOneType.java:239) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.EntityType.resolve(EntityType.java:457) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.extractKeysFromResultSet(Loader.java:862) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:718) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.processResultSet(Loader.java:990) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]

    at org.hibernate.loader.Loader.doQuery(Loader.java:948) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]

    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:310) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.loadEntity(Loader.java:2281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:64) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:54) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4269) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:511) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:481) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:222) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:124) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:92) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1257) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1140) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]


    // Repeated over and over

    at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:682) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.EntityType.resolve(EntityType.java:464) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.ManyToOneType.resolve(ManyToOneType.java:239) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.EntityType.resolve(EntityType.java:457) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.extractKeysFromResultSet(Loader.java:862) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:718) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.processResultSet(Loader.java:990) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQuery(Loader.java:948) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:310) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.loadEntity(Loader.java:2281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:64) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:54) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4269) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:511) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:481) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:222) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:124) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:92) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1257) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1140) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]

Что я знаю

Я точно знаю, что проблема заключается в «рекурсивном» соотношении между User и UserPermission.

Если я уберу отображение на User в UserPermission исключение исчезает: 

public class UserPermission {
    @Id @NonNull @NotNull
    private String user;

Чего я не знаю

Как я могу сопоставить эти два объекта без получения этого исключения, не имеет значения, еслисущности не отображаются сами по себе. Я просто хочу применить соотношение

Обновление 1

Добавление атрибута mappedBy к аннотации OneToMany в сущности «Пользователь» и удаление аннотации JoinColumn: 

@JsonIgnore
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "user")
private Collection<UserPermission> permissions;

Не решает проблему, но трассировка стека изменилась: 

java.lang.StackOverflowError: null
    at java.lang.ThreadLocal.get(ThreadLocal.java:161) ~[na:1.8.0_151]
    at io.micrometer.core.instrument.binder.logging.MetricsTurboFilter.decide(LogbackMetrics.java:132) ~[micrometer-core-1.1.3.jar:1.1.3]
    at ch.qos.logback.classic.spi.TurboFilterList.getTurboFilterChainDecision(TurboFilterList.java:49) ~[logback-classic-1.2.3.jar:na]
    at ch.qos.logback.classic.LoggerContext.getTurboFilterChainDecision_0_3OrMore(LoggerContext.java:269) ~[logback-classic-1.2.3.jar:na]
    at ch.qos.logback.classic.Logger.callTurboFilters(Logger.java:751) ~[logback-classic-1.2.3.jar:na]
    at ch.qos.logback.classic.Logger.isTraceEnabled(Logger.java:623) ~[logback-classic-1.2.3.jar:na]
    at org.apache.logging.slf4j.SLF4JLogger.isEnabledFor(SLF4JLogger.java:213) ~[log4j-to-slf4j-2.11.2.jar:2.11.2]
    at org.apache.logging.slf4j.SLF4JLogger.isEnabled(SLF4JLogger.java:121) ~[log4j-to-slf4j-2.11.2.jar:2.11.2]
    at org.apache.logging.log4j.spi.AbstractLogger.isEnabled(AbstractLogger.java:1504) ~[log4j-api-2.11.2.jar:2.11.2]
    at org.jboss.logging.Log4j2Logger.isEnabled(Log4j2Logger.java:46) ~[jboss-logging-3.3.2.Final.jar:3.3.2.Final]
    at org.jboss.logging.Logger.isTraceEnabled(Logger.java:98) ~[jboss-logging-3.3.2.Final.jar:3.3.2.Final]
    at org.jboss.logging.DelegatingBasicLogger.isTraceEnabled(DelegatingBasicLogger.java:54) ~[jboss-logging-3.3.2.Final.jar:3.3.2.Final]

    // Repeated over and over   

    at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4269) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:511) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:481) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:222) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:124) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:92) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1257) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1140) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:682) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.EntityType.resolve(EntityType.java:464) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.ManyToOneType.resolve(ManyToOneType.java:239) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.EntityType.resolve(EntityType.java:457) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.extractKeysFromResultSet(Loader.java:862) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:718) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.processResultSet(Loader.java:990) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQuery(Loader.java:948) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:310) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.Loader.loadEntity(Loader.java:2281) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:64) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:54) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]

Ответы [ 2 ]

0 голосов
/ 07 мая 2019

Решением было удалить @JoinColumn из родительской сущности (Пользователь) и использовать атрибут mappedBy с @OneToMany, как предложено piyush-tyagi : 

@Entity
@JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
@NoArgsConstructor @RequiredArgsConstructor @AllArgsConstructor
public class User {
    @Id
    @NonNull @NotNull
    private String id;

    // ... Other non pk fields

    @JsonIgnore
    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "user")
    private Collection<UserPermission> permissions;
}

Использование@EmbeddedId для ПК в дочерней сущности (UserPermission): 

@Entity
@JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
@NoArgsConstructor @AllArgsConstructor @RequiredArgsConstructor
public class UserPermission {
    @EmbeddedId
    private PK pk;

    @Embeddable
    @Getter @Setter @NoArgsConstructor @AllArgsConstructor
    public static class PK implements Serializable {
        private String user;

        private String permission;
    }
}

И сопоставьте родительские сущности, используя @MapsId

@MapsId("user")
@NonNull @NotNull
@ManyToOne
@JoinColumn(name = "user", updatable = false, insertable = false)
private User user;

@MapsId("permission")
@NonNull @NotNull
@ManyToOne
@JoinColumn(name = "permission", updatable = false, insertable = false)
private Permission permission;

Наконец, реализуйте методы получения / установки так, чтобыполя синхронизированы: 

@JsonIgnore
public PK getPk() {
    if (pk == null) {
        pk = new PK();
    }

    return pk;
}

public void setPk(PK pk) {
    this.pk = pk;
    this.user = new User(pk.getUser());
    this.permission = new Permission(pk.getPermission());
}

public User getUser() {
    if (user == null) {
        user = new User(getPk().getUser());
    }

    return user;
}

public void setUser(User user) {
    this.user = user;
    getPk().setUser(user.getId());
}

public Permission getPermission() {
    if (permission == null) {
        permission = new Permission(getPk().getPermission());
    }

    return permission;
}

public void setPermission(Permission permission) {
    this.permission = permission;
    getPk().setPermission(permission.getId());
}
0 голосов
/ 06 мая 2019

, поскольку у вас двунаправленное отношение в пользовательском классе, который имеет отношение один ко многим, вы должны использовать @mappedby, а не @joincolumn, который, по моему мнению, вызывает рекурсивный процесс, приводящий к ошибке stackoverflow

...