我正在使用 JPA。
数据库中有建筑物和房间表。他们有一个 OneToMany 连接。
我可以很好地向建筑物添加数据，但是当我尝试向房间添加数据时，出现错误:
java.lang.IllegalStateException: Failed to execute CommandLineRunner
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:787) ~[spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:768) ~[spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:322) ~[spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at vcs.hotelproject.aplication.HotelApp.main(HotelApp.java:24) ~[classes/:na]
Caused by: org.springframework.dao.InvalidDataAccessApiUsageException: detached entity passed to persist: vcs.hotelproject.aplication.Building; nested exception is org.hibernate.PersistentObjectException: detached entity passed to persist: vcs.hotelproject.aplication.Building
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:319) ~[spring-orm-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:255) ~[spring-orm-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:528) ~[spring-orm-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61) ~[spring-tx-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242) ~[spring-tx-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:153) ~[spring-tx-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:178) ~[spring-data-jpa-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:95) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at com.sun.proxy.$Proxy81.save(Unknown Source) ~[na:na]
at vcs.hotelproject.aplication.HotelApp.run(HotelApp.java:33) ~[classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:784) ~[spring-boot-2.2.5.RELEASE.jar:2.2.5.RELEASE]
... 5 common frames omitted
Caused by: org.hibernate.PersistentObjectException: detached entity passed to persist: vcs.hotelproject.aplication.Building
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:120) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:113) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:734) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:702) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.engine.spi.CascadingActions$7.cascade(CascadingActions.java:298) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:492) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:416) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:218) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:151) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:427) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:264) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:123) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:710) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:696) ~[hibernate-core-5.4.12.Final.jar:5.4.12.Final]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:314) ~[spring-orm-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at com.sun.proxy.$Proxy66.persist(Unknown Source) ~[na:na]
at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:554) ~[spring-data-jpa-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:371) ~[spring-data-commons-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:204) ~[spring-data-commons-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:657) ~[spring-data-commons-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:621) ~[spring-data-commons-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:605) ~[spring-data-commons-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:80) ~[spring-data-commons-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366) ~[spring-tx-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:99) ~[spring-tx-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.4.RELEASE.jar:5.2.4.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.2.4.RELEASE.jar:5.2.4.RELEASE]
... 14 common frames omitted
我的建筑模型:
@Entity
@Table(name = "building")
public class Building {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int buildingID;
@NotNull
private String address;
@NotNull
private String city;
@NotNull
private String buildingType;
@OneToMany(targetEntity = Room.class, fetch = FetchType.LAZY, mappedBy = "building", cascade = CascadeType.ALL)
private List<Room> rooms;
public List<Room> getRooms() {
return rooms;
}
public void setRooms(List<Room> rooms) {
this.rooms = rooms;
}
public int getBuildingID() {
return buildingID;
}
public void setBuildingID(int buildingID) {
this.buildingID = buildingID;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getBuildingType() {
return buildingType;
}
public void setBuildingType(String buildingType) {
this.buildingType = buildingType;
}
protected Building(String address, String city, String buildingType) {
super();
this.address = address;
this.city = city;
this.buildingType = buildingType;
}
protected Building() {
super();
}
//bidirectional
public void addRoom(Room tempRoom) {
if (!rooms.contains(tempRoom)) {
rooms.add(tempRoom);
tempRoom.setBuilding(this);
}
}
}
我的房间模型:
@Entity
@Table(name = "room")
public class Room {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int roomID;
@ManyToOne(targetEntity = Building.class, cascade = { CascadeType.PERSIST, CascadeType.MERGE, CascadeType.DETACH,
CascadeType.REFRESH })
@JoinColumn(name = "buildingID")
private Building building;
private String roomNumber;
private String roomType;
public Building getBuilding() {
return building;
}
public void setBuilding(Building building) {
this.building = building;
}
public String getRoomNumber() {
return roomNumber;
}
public void setRoomNumber(String roomNumber) {
this.roomNumber = roomNumber;
}
public String getRoomType() {
return roomType;
}
public void setRoomType(String roomType) {
this.roomType = roomType;
}
protected Room() {
super();
}
protected Room(Building building, String roomNumber, String roomType) {
super();
this.building = building;
this.roomNumber = roomNumber;
this.roomType = roomType;
}
@Override
public String toString() {
return "Room [roomID=" + roomID + ", building=" + building + ", roomNumber=" + roomNumber + ", roomType="
+ roomType + "]";
}
}
我的主应用程序。在这里，我获取 Building 对象并将其传递给 Room:
@SpringBootApplication
@EnableJpaRepositories
public class HotelApp implements CommandLineRunner {
public static void main(String[] args) {
SpringApplication.run(HotelApp.class, args);
}
public void run(String... args) throws Exception {
int id = 1;
Building b = buildingRepository.getBuildingByID(id);
// Client b = clientRepository.getClientByID(1);
// System.out.println(b.getFirstName());
roomRepository.save(new Room(b, "189", "Luxury"));
}
}
请帮忙。
最佳答案
找到答案了。
在 Room.class 中，我刚刚删除了 Cascade 类型，只留下 CascadeType.MERGE
现在它可以根据需要工作了。
关于java - 无效数据访问ApiUsageException : detached entity passed to persist，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60901703/