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嗨，我是hibernet 新手，我正在尝试在 CloudSql 中插入数据，但出现 org.hibernate.HibernateException：非法尝试将集合与两个打开的会话相关联 请检查我的代码

Domain.java

  @Entity
 @Table(name="TBL_STD_DOMAIN")
 public class Domain {

@Id
@GeneratedValue
@Column(name ="FLD_DOMAIN_ID")
private Long domainId;

@Column(name = "FLD_DOMAIN_NAME")
private String domainName;
@Column(name = "FLD_PRIMAY_DOMAIN_ID")
private Long primary_Domain_Id;
@Column(name = "FLD_CUSTOMER_ID")
private Long customerId;

@Column(name = "FLD_IS_ACTIVE")
@org.hibernate.annotations.Type(type="true_false")
private boolean isActive;

@Column(name = "FLD_ISPRIMARYDOMAIN")
@org.hibernate.annotations.Type(type="true_false")
private boolean isPrimayDomain;
  @OneToMany( mappedBy="domain",cascade=CascadeType.ALL )
@JoinTable(name = "Domain_UserProfile", 
        joinColumns = { @JoinColumn(name = "FLD_DOMAIN_ID") },
        inverseJoinColumns = { @JoinColumn(name = "FLD_USERPROFILE_ID") })

private Collection<UserProfile> userProfile = new ArrayList<UserProfile>();

@OneToMany( mappedBy="domain",cascade=CascadeType.ALL )
@JoinTable(name = "Domain_Organization", 
        joinColumns = { @JoinColumn(name = "FLD_DOMAIN_ID") },
        inverseJoinColumns = { @JoinColumn(name = "FLD_ORG_ID") })

private Collection<Organization> orgnization = new ArrayList<Organization>();
//**SETTER AND GEETER METHODS**

} 组织.java

   @Entity
@Table(name="TBL_STD_ORGANIZATION")
  public class Organization {
@Id
@GeneratedValue
@Column(name="FLD_ORG_ID")
private Long organizationId;
@Column(name="FLD_ORG_NAME")
private String orgName;
@OneToMany
private java.util.Collection<Department> listOfDepartMents = new java.util.ArrayList<Department>();

@Column(name = "FLD_CUSTOMER_ID")
private Long customerId;

@ManyToOne
private Domain domain;

public Long getOrganizationId() {
    return organizationId;
}

public void setOrganizationId(Long organizationId) {
    this.organizationId = organizationId;
}

public String getOrgName() {
    return orgName;
}

public void setOrgName(String orgName) {
    this.orgName = orgName;
}

public java.util.Collection<Department> getListOfDepartMents() {
    return listOfDepartMents;
}

public void setListOfDepartMents(
        java.util.Collection<Department> listOfDepartMents) {
    this.listOfDepartMents = listOfDepartMents;
}

public Long getCustomerId() {
    return customerId;
}

public void setCustomerId(Long customerId) {
    this.customerId = customerId;
}

public Domain getDomain() {
    return domain;
}

public void setDomain(Domain domain) {
    this.domain = domain;
}

} UserProfile.java

 Entity
  @Table(name="TBL_STD_USERPROFILE")
  public class UserProfile {
@Id
@GeneratedValue
@Column(name = "FLD_USER_ID")
private Long userId;


@Column(name = "FLD_CREATED_ON")
@Temporal(TemporalType.DATE)
private Date createdOn;

@Column(name = "FLD_IMAGE_BLOB_KEY")
private String imageBlobKey;

@Column(name = "FLD_LASTMODIFIED_ON")
@Temporal(TemporalType.DATE)
private Date lastModifiedOn;
   @ManyToOne
private Domain domain;
 //SETTER ,GETTER METHODS

}

我的通用DAO

 public abstract class GenericDaoImpl <T> extends HibernateDaoSupport  implements              IGenericDao<T> {

private static final Logger log = Logger.getLogger(GenericDaoImpl.class.getName()); 

@Autowired
public void setHibernateSessionFactory(SessionFactory sessionFactory)
{
    setSessionFactory(sessionFactory);
}

@Override
public T save(T t) {
    //getHibernateTemplate().save(t);

    //getHibernateTemplate().saveOrUpdate(t);
    Session session = getSessionFactory().openSession();
    Transaction tx=session.beginTransaction();
    session.saveOrUpdate(t);
    tx.commit();
    session.close();
    return t;
}

@Override
public T merge(T t) {
    //getHibernateTemplate().save(t);

    //getHibernateTemplate().saveOrUpdate(t);
    Session session = getSessionFactory().openSession();
    session.beginTransaction();
    session.merge(t);
    session.close();
    return t;
}

@Override
public void delete(T t) {
    getSession().delete(t);
}

但是当我试图保存我得到的对象时

警告：异常..org.hibernate.HibernateException：非法尝试将集合与两个打开的会话关联 org.hibernate.HibernateException：非法尝试将集合与 org.hibernate.collection.AbstractPersistentCollection.setCurrentSession(AbstractPersistentCollection. java:432) 在 org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:124) 在 org.hibernate.event.def 的 org.hibernate.event.def.OnUpdateVisitor.processCollection(OnUpdateVisitor.java:66) .AbstractVisitor.processValue(AbstractVisitor.java:84) at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:78) at org.hibernate.event.def.AbstractVisitor.process(AbstractVisitor.java:146) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener。performUpdate(DefaultSaveOrUpdateEventListener.java:316) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:246) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:112) at org.hibernate .event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93) at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:535) at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:527) at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:523) 在 com.cloudcodes.gdirectory.daoImpl.GenericDaoImpl.save(GenericDaoImpl.java:36) 在 com.cloudcodes.gdirectory.managerImpl.GenericServiceManagerImpl.save(GenericServiceManagerImpl.save(GenericServiceManagerImpl.save) java:26) 在 com.cloudcodes.gdirectory.controller.ProfileController.profileSynch(ProfileController.java:401) 在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 在 sun.reflect.DelegatingMethodAccessorImpl。在 com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115) 的 java.lang.reflect.Method.invoke(Method.java:597) 调用(DelegatingMethodAccessorImpl.java:25)在 org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) 在 org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440) 在 org.springframework .web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter。处理（AnnotationMethodHandlerAdapter.java:428）在 org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) 在 org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 在 org.springframework .web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617 ) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.mortbay.jetty.servlet.ServletHolder.handle( ServletHolder.java:511) 在 org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166) 在 com.google.appengine.api。socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74) 在 org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 在 com.google.appengine.tools.development.ResponseRewriterFilter.doFilter( ResponseRewriterFilter.java:123) 在 org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 在 com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34) 在 org .mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 在 com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63) 在 org.mortbay.jetty.servlet .ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 在 com.google.apphosting.utils.servlet.TransactionCleanupFilter。doFilter(TransactionCleanupFilter.java:43) 在 org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 在 com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)在 org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 在 com.google.appengine.tools.development.DevAppServerServersFilter.doDirectRequest(DevAppServerServersFilter.java:369) 在 com.google.appengine.tools .development.DevAppServerServersFilter.doDirectServerRequest(DevAppServerServersFilter.java:352) 在 com.google.appengine.tools.development.DevAppServerServersFilter.doFilter(DevAppServerServersFilter.java:115) 在 org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler .java:1157) 在 org.mortbay.jetty.servlet.ServletHandler。org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) 的句柄(ServletHandler.java:388) org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) 的 org.mortbay .jetty.handler.ContextHandler.handle(ContextHandler.java:765) 在 org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) 在 com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext .java:94) 在 org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 在 com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:421) 在 org. mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 在 org.mortbay.jetty.Server.handle(Server.java:326) 在 org.mortbay.jetty.HttpConnection。handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547) at org.mortbay.jetty .HttpParser.parseAvailable(HttpParser.java:212) 在 org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) 在 org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) 在 org. mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) 在 org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) 在 org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

任何帮助我

4

1 回答 1

0

实体映射还不够，我们需要代码来检查对象和会话流并提取错误，但我的建议是：

在 DAO 中打开/关闭会话不是一个好习惯。您正在使用服务和 DAO 层，因此让服务（您的GenericServiceManagerImpl）管理会话（打开/关闭）和事务（开始/提交/回滚）和 DAO（您的GenericDAOImpl）只管理数据持久性（保存/删除/更新/合并）等。 .

阅读有关 TransactionManager 和事务管理的信息，@Transactional以及它是如何工作的（声明性事务）

于 2013-08-21T12:00:28.763 回答