我有两个域User和Authority。这两个域使用第三个表具有一对多单向关系。
用户域：
@Entity
@Table(name = "USER")
@ToString
@EqualsAndHashCode(callSuper=false)
@Data
public class User extends AbstractEntity implements UserDetails {
private static final long serialVersionUID = 2507177602107639240L;
@OneToMany(fetch = FetchType.EAGER)
@JoinTable
List<Authority> authorities;
@Column(nullable = false)
String password;
@Column(nullable = false, unique = true)
String username;
boolean accountNonExpired = true;
boolean accountNonLocked = true;
boolean credentialsNonExpired = true;
boolean enabled = false;
@OneToOne(cascade = CascadeType.ALL)
UserDetail userDetail;
public User(String username, String password) {
this.username = username;
this.password = password;
}
public User() {
}
}
权限域：
@Entity
@EqualsAndHashCode(callSuper=false)
@ToString
@Data
public class Authority extends AbstractEntity implements GrantedAuthority {
private static final long serialVersionUID = -3506805573570762491L;
@Setter(AccessLevel.NONE)
@Column(unique = true, nullable = false)
String authority;
@SuppressWarnings("unused")
private Authority(){}
public Authority(String authority) {
this.authority = authority;
}
public Authority(Role role) {
this(role.toString());
}
}
在应用程序启动时，我在db。中保留了所有可用权限。
mysql> select * from authority;
+----+------------+--------------+--------------+------------+------------------+
| id | created_by | date_created | last_updated | updated_by | authority |
+----+------------+--------------+--------------+------------+------------------+
| 1 | NULL | NULL | NULL | NULL | ROLE_CUSTOMER |
| 2 | NULL | NULL | NULL | NULL | ROLE_ADMIN_READ |
| 3 | NULL | NULL | NULL | NULL | ROLE_ADMIN_WRITE |
+----+------------+--------------+--------------+------------+------------------+
3 rows in set (0.00 sec)
现在我正试图以权限保存用户。
@Transactional
private void createAdminUser(){
String username = "admin";
User user = userRepository.findByUsername(username);
if(user == null){
List<Authority> authorities = authorityRepository.findAllByAuthority(Role.ROLE_ADMIN_WRITE.toString());
user = new User(username, "admin");
user.setAuthorities(authorities);
userRepository.save(user);
}
}
现在我变得异常，因为权限没有被保留。
错误日志：
org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.legacybuy.model.Authority; nested exception is java.lang.IllegalStateException: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.legacybuy.model.Authority
at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:381) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:246) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:521) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:504) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:292) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:133) ~[spring-data-jpa-1.11.0.RELEASE.jar:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57) ~[spring-data-commons-1.13.0.RELEASE.jar:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at com.sun.proxy.$Proxy99.save(Unknown Source) ~[na:na]
at com.legacybuy.config.BootStrap.createAdminUser(BootStrap.java:79) ~[classes/:na]
at com.legacybuy.config.BootStrap.onApplicationEvent(BootStrap.java:38) ~[classes/:na]
at com.legacybuy.config.BootStrap.onApplicationEvent(BootStrap.java:1) ~[classes/:na]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:167) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:383) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:337) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.boot.context.event.EventPublishingRunListener.finished(EventPublishingRunListener.java:100) ~[spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
at org.springframework.boot.SpringApplicationRunListeners.callFinishedListener(SpringApplicationRunListeners.java:79) ~[spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
at org.springframework.boot.SpringApplicationRunListeners.finished(SpringApplicationRunListeners.java:72) ~[spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
at com.legacybuy.Application.main(Application.java:12) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_92]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_92]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_92]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_92]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-1.5.1.RELEASE.jar:1.5.1.RELEASE]
Caused by: java.lang.IllegalStateException: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.legacybuy.model.Authority
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1689) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1608) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.jpa.internal.EntityManagerImpl$CallbackExceptionMapperImpl.mapManagedFlushFailure(EntityManagerImpl.java:235) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2967) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2339) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:485) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:147) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$100(JdbcResourceLocalTransactionCoordinatorImpl.java:38) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:231) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:65) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:61) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final]
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
... 35 common frames omitted
Caused by: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.legacybuy.model.Authority
at org.hibernate.engine.internal.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:279) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.type.EntityType.getIdentifier(EntityType.java:462) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.type.ManyToOneType.nullSafeSet(ManyToOneType.java:144) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.persister.collection.AbstractCollectionPersister.writeElement(AbstractCollectionPersister.java:894) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1313) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.action.internal.CollectionRecreateAction.execute(CollectionRecreateAction.java:50) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:582) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:456) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:337) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1282) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:465) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2963) ~[hibernate-core-5.0.11.Final.jar:5.0.11.Final]
... 43 common frames omitted
答案 0 :(得分：0)
这可能是因为您的findByAuthority调用参与了自己的事务，返回了一个分离的/临时的Authority实例，并且您以后委托给您的用户的存储库并且它失败了因为Authority是暂时的。
处理此问题的最佳方法是确保事务边界在方法调用堆栈中更早发生，以便两个存储库操作都在同一事务上下文中发生。
@Transactional
public void createAdminUser(String userName) {
// your logic here
}
此案例中的另一个 hack 解决方案是更改List<Authority>属性的映射，以便将操作从User级联到Authority。< / p>
@OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
@JoinTable
private List<Authority> authorities;
显然，最好的方法是确保所有存储库调用都参与更广泛的事务范围，以便在业务用例中不会将任何实体分离。
答案 1 :(得分：0)
我的猜测是，在您的User构造函数中，您正在调用AuthorityUtil，并返回一个已分离的权限实体列表。
\u3456确保方法getAsList没有实例化新的Authority类。