持久化实体与多对多关联实体抛出 "org.hibernate.PersistentObjectException"
Persist Entity with Many-To-Many association Entity throws "org.hibernate.PersistentObjectException"
我想保留一个新的 TestRun 实体，它有新的 TestRunTestCase 子实体，但我得到了一个 org.hibernate.PersistentObjectException，我不明白为什么。
TestRun.java:
@Entity
@Table(name = "testrun")
public class TestRun {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@Column(name = "name", nullable = false)
private String name;
@ManyToOne
@JoinColumn(name = "status_id", nullable=false)
private Status status;
@ManyToOne
@JoinColumn(name = "user_id")
private User assignee;
@ManyToOne
@JoinColumn(name = "requirement_id", nullable=false)
private Requirement requirement;
@OneToMany(mappedBy = "testrun", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private List<TestRunTestCase> testcaseAssoc = new ArrayList<>();
public void addTestcaseAssoc(TestRunTestCase trtc) {
testcaseAssoc.add(trtc);
trtc.setTestrun(this);
}
public void removeTestcaseAssoc(TestRunTestCase trtc) {
testcaseAssoc.remove(trtc);
trtc.setTestrun(null);
}
TestCase.java:
@Entity
@Table(name = "testcase")
public class TestCase {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@Column(name = "name", nullable = false)
private String name;
@Column(name = "description", nullable = false)
private String description;
@ManyToOne
@JoinColumn(name = "requirement_id", nullable=false)
private Requirement requirement;
@OneToMany(mappedBy = "testcase", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private List<TestRunTestCase> testrunAssoc = new ArrayList<>();
试运行TestCase.java:
@Entity
@Table(name = "testrun_testcase")
@IdClass(TestRunTestCaseId.class)
public class TestRunTestCase {
@Id
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "testrun_id", referencedColumnName = "id")
private TestRun testrun;
@Id
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "testcase_id", referencedColumnName = "id")
private TestCase testcase;
@ManyToOne
@JoinColumn(name = "status_id", nullable=false)
private Status status;
方法 createTestRun():
// ... created new TestRun Object -> newTestRun
// ... get existing List of TestCases -> testCaseList
// ... get existing initial Status -> caseStatus
testCaseList.forEach(c -> newTestRun.addTestcaseAssoc(new TestRunTestCase(newTestRun, c, caseStatus)));
testRunDao.save(newTestRun);
TestRunDao.java:
public class TestRunDao implements Dao<TestRun> {
@Override
public Optional<TestRun> get(int id) {
Session session = HibernateUtil.getSessionFactory().openSession();
Optional<TestRun> testRun = Optional.ofNullable(session.find(TestRun.class, id));
session.close();
return testRun;
}
@Override
public List<TestRun> getAll() {
Session session = HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
List<TestRun> testRunList = session.createQuery("FROM TestRun u ", TestRun.class).getResultList();
session.close();
return testRunList;
}
@Override
public void save(TestRun t) {
executeTransaction(entityManager -> entityManager.persist(t));
}
@Override
public void update(TestRun t) {
executeTransaction(entityManager -> entityManager.merge(t));
}
@Override
public void delete(TestRun t) {
executeTransaction(entityManager -> entityManager.remove(t));
}
private void executeTransaction(Consumer<EntityManager> action) {
Session session = HibernateUtil.getSessionFactory().openSession();
EntityTransaction tx = session.getTransaction();
try {
tx.begin();
action.accept(session);
tx.commit();
}
catch (RuntimeException e) {
tx.rollback();
throw e;
}
finally {
session.close();
}
}
}
错误：
javax.faces.FacesException: #{requirementDetails.createTestRun}: javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.iu.ticketsystem.filter.AuthorizationFilter.doFilter(AuthorizationFilter.java:43)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:359)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:889)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1735)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: javax.faces.el.EvaluationException: javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
... 32 more
Caused by: javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:786)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748)
at org.hibernate.engine.spi.CascadingActions.cascade(CascadingActions.java:298)
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:510)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:434)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220)
at org.hibernate.engine.internal.Cascade.cascadeComponent(Cascade.java:405)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:241)
at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:153)
at org.hibernate.event.internal.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:427)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:264)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:135)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:780)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748)
at org.hibernate.engine.spi.CascadingActions.cascade(CascadingActions.java:298)
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:510)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:434)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220)
at org.hibernate.engine.internal.Cascade.cascadeCollectionElements(Cascade.java:543)
at org.hibernate.engine.internal.Cascade.cascadeCollection(Cascade.java:474)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:437)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220)
at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:153)
at org.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:459)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:293)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:123)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:756)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:742)
at com.iu.ticketsystem.dao.TestRunDao.lambda[=16=](TestRunDao.java:36)
at com.iu.ticketsystem.dao.TestRunDao.executeTransaction(TestRunDao.java:57)
at com.iu.ticketsystem.dao.TestRunDao.save(TestRunDao.java:36)
at com.iu.ticketsystem.beans.RequirementDetails.createTestRun(RequirementDetails.java:153)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.el.parser.AstValue.invoke(AstValue.java:252)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:266)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
... 33 more
Caused by: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:120)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:780)
... 81 more
javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
我该如何解决这个问题？
谢谢。
我找到了解决问题的简单方法。
我在我的连接中添加了一个 id table 并像这样映射它：
@Entity
@Table(name = "testrun_testcase")
public class TestRunTestCase {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "testrun_id", referencedColumnName = "id")
private TestRun testrun;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "testcase_id", referencedColumnName = "id")
private TestCase testcase;
@ManyToOne
@JoinColumn(name = "status_id", nullable=false)
private Status status;
所以我不再将 testrun 和 testcase 属性用作 id，而是使用单独的 id。
我想保留一个新的 TestRun 实体，它有新的 TestRunTestCase 子实体，但我得到了一个 org.hibernate.PersistentObjectException，我不明白为什么。
TestRun.java:
@Entity
@Table(name = "testrun")
public class TestRun {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@Column(name = "name", nullable = false)
private String name;
@ManyToOne
@JoinColumn(name = "status_id", nullable=false)
private Status status;
@ManyToOne
@JoinColumn(name = "user_id")
private User assignee;
@ManyToOne
@JoinColumn(name = "requirement_id", nullable=false)
private Requirement requirement;
@OneToMany(mappedBy = "testrun", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private List<TestRunTestCase> testcaseAssoc = new ArrayList<>();
public void addTestcaseAssoc(TestRunTestCase trtc) {
testcaseAssoc.add(trtc);
trtc.setTestrun(this);
}
public void removeTestcaseAssoc(TestRunTestCase trtc) {
testcaseAssoc.remove(trtc);
trtc.setTestrun(null);
}
TestCase.java:
@Entity
@Table(name = "testcase")
public class TestCase {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@Column(name = "name", nullable = false)
private String name;
@Column(name = "description", nullable = false)
private String description;
@ManyToOne
@JoinColumn(name = "requirement_id", nullable=false)
private Requirement requirement;
@OneToMany(mappedBy = "testcase", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private List<TestRunTestCase> testrunAssoc = new ArrayList<>();
试运行TestCase.java:
@Entity
@Table(name = "testrun_testcase")
@IdClass(TestRunTestCaseId.class)
public class TestRunTestCase {
@Id
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "testrun_id", referencedColumnName = "id")
private TestRun testrun;
@Id
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "testcase_id", referencedColumnName = "id")
private TestCase testcase;
@ManyToOne
@JoinColumn(name = "status_id", nullable=false)
private Status status;
方法 createTestRun():
// ... created new TestRun Object -> newTestRun
// ... get existing List of TestCases -> testCaseList
// ... get existing initial Status -> caseStatus
testCaseList.forEach(c -> newTestRun.addTestcaseAssoc(new TestRunTestCase(newTestRun, c, caseStatus)));
testRunDao.save(newTestRun);
TestRunDao.java:
public class TestRunDao implements Dao<TestRun> {
@Override
public Optional<TestRun> get(int id) {
Session session = HibernateUtil.getSessionFactory().openSession();
Optional<TestRun> testRun = Optional.ofNullable(session.find(TestRun.class, id));
session.close();
return testRun;
}
@Override
public List<TestRun> getAll() {
Session session = HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
List<TestRun> testRunList = session.createQuery("FROM TestRun u ", TestRun.class).getResultList();
session.close();
return testRunList;
}
@Override
public void save(TestRun t) {
executeTransaction(entityManager -> entityManager.persist(t));
}
@Override
public void update(TestRun t) {
executeTransaction(entityManager -> entityManager.merge(t));
}
@Override
public void delete(TestRun t) {
executeTransaction(entityManager -> entityManager.remove(t));
}
private void executeTransaction(Consumer<EntityManager> action) {
Session session = HibernateUtil.getSessionFactory().openSession();
EntityTransaction tx = session.getTransaction();
try {
tx.begin();
action.accept(session);
tx.commit();
}
catch (RuntimeException e) {
tx.rollback();
throw e;
}
finally {
session.close();
}
}
}
错误：
javax.faces.FacesException: #{requirementDetails.createTestRun}: javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at com.iu.ticketsystem.filter.AuthorizationFilter.doFilter(AuthorizationFilter.java:43)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:359)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:889)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1735)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: javax.faces.el.EvaluationException: javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
... 32 more
Caused by: javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:786)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748)
at org.hibernate.engine.spi.CascadingActions.cascade(CascadingActions.java:298)
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:510)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:434)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220)
at org.hibernate.engine.internal.Cascade.cascadeComponent(Cascade.java:405)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:241)
at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:153)
at org.hibernate.event.internal.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:427)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:264)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:135)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:780)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748)
at org.hibernate.engine.spi.CascadingActions.cascade(CascadingActions.java:298)
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:510)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:434)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220)
at org.hibernate.engine.internal.Cascade.cascadeCollectionElements(Cascade.java:543)
at org.hibernate.engine.internal.Cascade.cascadeCollection(Cascade.java:474)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:437)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220)
at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:153)
at org.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:459)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:293)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:123)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:756)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:742)
at com.iu.ticketsystem.dao.TestRunDao.lambda[=16=](TestRunDao.java:36)
at com.iu.ticketsystem.dao.TestRunDao.executeTransaction(TestRunDao.java:57)
at com.iu.ticketsystem.dao.TestRunDao.save(TestRunDao.java:36)
at com.iu.ticketsystem.beans.RequirementDetails.createTestRun(RequirementDetails.java:153)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.el.parser.AstValue.invoke(AstValue.java:252)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:266)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
... 33 more
Caused by: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:120)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:780)
... 81 more
javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.iu.ticketsystem.entity.TestCase
我该如何解决这个问题？
谢谢。
我找到了解决问题的简单方法。 我在我的连接中添加了一个 id table 并像这样映射它：
@Entity
@Table(name = "testrun_testcase")
public class TestRunTestCase {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "testrun_id", referencedColumnName = "id")
private TestRun testrun;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "testcase_id", referencedColumnName = "id")
private TestCase testcase;
@ManyToOne
@JoinColumn(name = "status_id", nullable=false)
private Status status;
所以我不再将 testrun 和 testcase 属性用作 id，而是使用单独的 id。