Java Hibernate未更新记录-Wicket

我正在使用Wicket、Spring和Hibernate开发一个web应用程序，我遇到了一个更新记录的问题。我已验证是否调用了saveOrUpdate方法，以及域对象中的数据是否已更改。但是，SQL输出不会显示对数据库进行了任何更改（在示例中为更新），并且受影响的记录尚未更新

[DEBUG] 2010-07-23 00:29:26,302 :org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.lookupSessionFactory(OpenSessionInViewFilter.java:239): Using SessionFactory 'sessionFactory' for OpenSessionInViewFilter [DEBUG] 2010-07-23 00:29:26,302 :org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:214): Returning cached instance of singleton bean 'sessionFactory' [DEBUG] 2010-07-23 00:29:26,302 :org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:181): Opening single Hibernate Session in OpenSessionInViewFilter [DEBUG] 2010-07-23 00:29:26,302 :org.springframework.orm.hibernate3.SessionFactoryUtils.doGetSession(SessionFactoryUtils.java:318): Opening Hibernate Session [DEBUG] 2010-07-23 00:29:26,303 :org.hibernate.impl.SessionImpl.(SessionImpl.java:247): opened session at timestamp: 5242215490777088 [TRACE] 2010-07-23 00:29:26,303 :org.hibernate.impl.SessionImpl.setFlushMode(SessionImpl.java:1316): setting flush mode to: NEVER [DEBUG] 2010-07-23 00:29:26,305 :org.apache.wicket.Session.getPage(Session.java:700): Getting page [path = 4:userprofile_form, versionNumber = 0] [DEBUG] 2010-07-23 00:29:26,306 :org.apache.wicket.markup.html.form.persistence.CookieValuePersister.getCookie(CookieValuePersister.java:210): Unable to find Cookie with name=userprofile_form.email and request URI=/upbeat-app-skuld-web/ [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.engine.IdentifierValue.isUnsaved(IdentifierValue.java:127): id unsaved-value: 0 [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:546): detached instance of: com.upbeat.app.skuldweb.domain.UserVO [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:228): updating detached instance [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:295): updating [com.upbeat.app.skuldweb.domain.UserVO#1] [TRACE] 2010-07-23 00:29:26,310 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:346): updating [com.upbeat.app.skuldweb.domain.UserVO#1] [TRACE] 2010-07-23 00:29:26,311 :org.hibernate.engine.Cascade.cascade(Cascade.java:138): processing cascade ACTION_SAVE_UPDATE for: com.upbeat.app.skuldweb.domain.UserVO [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:239): cascading to saveOrUpdate: com.upbeat.app.skuldweb.domain.UserLevelVO [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.engine.IdentifierValue.isUnsaved(IdentifierValue.java:127): id unsaved-value: 0 [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:546): detached instance of: com.upbeat.app.skuldweb.domain.UserLevelVO [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:228): updating detached instance [TRACE] 2010-07-23 00:29:26,313 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:295): updating [com.upbeat.app.skuldweb.domain.UserLevelVO#1] [TRACE] 2010-07-23 00:29:26,313 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:346): updating [com.upbeat.app.skuldweb.domain.UserLevelVO#1] [TRACE] 2010-07-23 00:29:26,313 :org.hibernate.engine.Cascade.cascade(Cascade.java:173): done processing cascade ACTION_SAVE_UPDATE for: com.upbeat.app.skuldweb.domain.UserVO [DEBUG] 2010-07-23 00:29:26,314 :org.apache.wicket.RequestCycle.setRequestTarget(RequestCycle.java:644): replacing request target org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget@676067951[Page class = com.upbeat.app.skuldweb.web.user.UserProfilePage, id = 4, version = 0]->userprofile_form->interface org.apache.wicket.markup.html.form.IFormSubmitListener.IFormSubmitListener (request paramaters: [RequestParameters componentPath=4:userprofile_form pageMapName=null versionNumber=0 interfaceName=IFormSubmitListener componentId=null behaviorId=null urlDepth=-1 parameters={email=john@upbeat.no,userprofile__form2_hf_0=} onlyProcessIfPathActive=false]) with [BookmarkablePageRequestTarget@1030849724 pageClass=com.upbeat.app.skuldweb.web.user.UserProfilePage] 我想使用update（）更有意义，但我认为saveOrUpdate（）确实能够创建新记录，但不会更新它们。我已验证是否调用了此方法，并且传递的UserVO确实包含更新的字段。以下是DAO方法：

}

Hibernate通常会推迟更新，直到刷新会话。要测试这是否是您案例中的问题，请在update语句之后插入

getSession（）.flush（）

如何管理交易？提交会话时将自动进行刷新，但如果事务配置有错误，则可能会提交JDBC连接，但不会提交绑定到Hibernate会话的事务

编辑：根据您的更新，我看到FlushMode在某些行被设置为从不：

我怀疑这就是问题所在。它会导致会话永远不会自动刷新—这通常是在只读事务中要执行的操作，而不是在修改数据时。看起来您运行时没有事务（autocommit设置为true-顺便说一句，这是不推荐的）。的Javadoc提供了一些线索：

默认情况下，此筛选器不会刷新Hibernate会话，刷新模式设置为FlushMode.NEVER。它假定与关心刷新的服务层事务结合使用：在读写事务期间，活动事务管理器将临时将刷新模式更改为FlushMode.AUTO，并且在每个事务结束时将刷新模式重置为FlushMode.NEVER。如果您打算在不使用事务的情况下使用此筛选器，请考虑更改默认刷新模式（通过“FLUSMODE”属性）。

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换句话说，您有两个选项：要么将OpenSessionInViewFilter上的

flushMode

设置为AUTO，要么关闭autocommit并配置事务管理器，例如。

因为您使用的是Spring，我建议您使用Spring的PlatformTransactionManager来管理事务。作为事务管理的一部分，Spring会自动刷新会话。这意味着您不必担心代码中的这些方面

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Spring有一个OpenSessionInViewFilter，它连接到事务管理器以启动/刷新会话，您可以使用Spring的@Transactional注释您的方法，以指示您希望为特定方法“写入”事务。这将更新您的记录

非常感谢你！将getSession（）.flush（）添加到更新方法确实有效。我确实尝试在OpenSessionInViewFilter中将flushMode设置为“自动”，但我仍然必须手动调用getSession（）.flush（）来运行更新（打开和关闭autocommitt）；事务tr=getSession（）.beginTransaction（）；getSession（）.update（vo）；tr.commit（）；。再次感谢 jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost/skuldweb_dev;AUTO=MULTI;CURSOR=READONLY jdbc.username= jdbc.password= hibernate.dialect=org.hibernate.dialect.MySQLDialect hibernate.show_sql=true hibernate.use_outer_join=true
hibernate.cache.use_query_cache=true hibernate.cache.use_second_level_cache=true hibernate.cache.provider=org.hibernate.cache.HashtableCacheProvider
hibernate.schemaUpdate=true <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">${hibernate.dialect}</prop> <prop key="hibernate.show_sql">${hibernate.show_sql}</prop> <prop key="use_outer_join">${hibernate.use_outer_join}</prop> <prop key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop> <prop key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop> <prop key="hibernate.cache.provider_class">${hibernate.cache.provider}</prop> <prop key="hibernate.connection.pool_size">10</prop> <prop key="hibernate.connection.autocommit">true</prop> <prop key="hibernate.jdbc.batch_size">1000</prop> <prop key="hibernate.bytecode.use_reflection_optimizer">true</prop> </props> </property> <property name="annotatedClasses"> <list> <value>com.upbeat.app.skuldweb.domain.UserVO</value> <value>com.upbeat.app.skuldweb.domain.UserLevelVO</value>
</list> </property> <property name="schemaUpdate" value="${hibernate.schemaUpdate}"/> </bean> [DEBUG] 2010-07-23 00:29:26,302 :org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.lookupSessionFactory(OpenSessionInViewFilter.java:239): Using SessionFactory 'sessionFactory' for OpenSessionInViewFilter [DEBUG] 2010-07-23 00:29:26,302 :org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:214): Returning cached instance of singleton bean 'sessionFactory' [DEBUG] 2010-07-23 00:29:26,302 :org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:181): Opening single Hibernate Session in OpenSessionInViewFilter [DEBUG] 2010-07-23 00:29:26,302 :org.springframework.orm.hibernate3.SessionFactoryUtils.doGetSession(SessionFactoryUtils.java:318): Opening Hibernate Session [DEBUG] 2010-07-23 00:29:26,303 :org.hibernate.impl.SessionImpl.(SessionImpl.java:247): opened session at timestamp: 5242215490777088 [TRACE] 2010-07-23 00:29:26,303 :org.hibernate.impl.SessionImpl.setFlushMode(SessionImpl.java:1316): setting flush mode to: NEVER [DEBUG] 2010-07-23 00:29:26,305 :org.apache.wicket.Session.getPage(Session.java:700): Getting page [path = 4:userprofile_form, versionNumber = 0] [DEBUG] 2010-07-23 00:29:26,306 :org.apache.wicket.markup.html.form.persistence.CookieValuePersister.getCookie(CookieValuePersister.java:210): Unable to find Cookie with name=userprofile_form.email and request URI=/upbeat-app-skuld-web/ [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.engine.IdentifierValue.isUnsaved(IdentifierValue.java:127): id unsaved-value: 0 [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:546): detached instance of: com.upbeat.app.skuldweb.domain.UserVO [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:228): updating detached instance [TRACE] 2010-07-23 00:29:26,308 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:295): updating [com.upbeat.app.skuldweb.domain.UserVO#1] [TRACE] 2010-07-23 00:29:26,310 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:346): updating [com.upbeat.app.skuldweb.domain.UserVO#1] [TRACE] 2010-07-23 00:29:26,311 :org.hibernate.engine.Cascade.cascade(Cascade.java:138): processing cascade ACTION_SAVE_UPDATE for: com.upbeat.app.skuldweb.domain.UserVO [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:239): cascading to saveOrUpdate: com.upbeat.app.skuldweb.domain.UserLevelVO [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.engine.IdentifierValue.isUnsaved(IdentifierValue.java:127): id unsaved-value: 0 [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:546): detached instance of: com.upbeat.app.skuldweb.domain.UserLevelVO [TRACE] 2010-07-23 00:29:26,312 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:228): updating detached instance [TRACE] 2010-07-23 00:29:26,313 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:295): updating [com.upbeat.app.skuldweb.domain.UserLevelVO#1] [TRACE] 2010-07-23 00:29:26,313 :org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:346): updating [com.upbeat.app.skuldweb.domain.UserLevelVO#1] [TRACE] 2010-07-23 00:29:26,313 :org.hibernate.engine.Cascade.cascade(Cascade.java:173): done processing cascade ACTION_SAVE_UPDATE for: com.upbeat.app.skuldweb.domain.UserVO [DEBUG] 2010-07-23 00:29:26,314 :org.apache.wicket.RequestCycle.setRequestTarget(RequestCycle.java:644): replacing request target org.apache.wicket.request.target.component.listener.ListenerInterfaceRequestTarget@676067951[Page class = com.upbeat.app.skuldweb.web.user.UserProfilePage, id = 4, version = 0]->userprofile_form->interface org.apache.wicket.markup.html.form.IFormSubmitListener.IFormSubmitListener (request paramaters: [RequestParameters componentPath=4:userprofile_form pageMapName=null versionNumber=0 interfaceName=IFormSubmitListener componentId=null behaviorId=null urlDepth=-1 parameters={email=john@upbeat.no,userprofile__form2_hf_0=} onlyProcessIfPathActive=false]) with [BookmarkablePageRequestTarget@1030849724 pageClass=com.upbeat.app.skuldweb.web.user.UserProfilePage] @Entity @Table(name = "USERS") @NamedQueries({ @NamedQuery(name = "user.getById", query = "from UserVO item where item.id = :id"), @NamedQuery(name = "user.getAllUsers", query = "from UserVO item order by item.registerDate desc"), @NamedQuery(name = "user.countAll", query = "select count(item) from UserVO item"), @NamedQuery(name = "user.getByUsername", query = "from UserVO item where item.username = :username"), @NamedQuery(name = "user.authenticate", query = "from UserVO item where item.username = :username AND item.passwordHash = :passwordHash") }) public class UserVO extends BaseVO {

@Id  
@GeneratedValue(strategy = GenerationType.AUTO)  
@Column(name = "ID")  
protected long id;  

@OneToOne(cascade = CascadeType.ALL)
protected UserLevelVO userLevelVO;

@Basic
@Column(name = "USERNAME")
protected String username;

@Basic
@Column(name = "PASSWORD_HASH")
protected String passwordHash;

@Basic
@Column(name = "EMAIL")
protected String email;

@Temporal(TemporalType.TIMESTAMP)
@Column(name = "REGISTER_DATE")
protected Date registerDate;

@Temporal(TemporalType.TIMESTAMP)
@Column(name = "LAST_LOGIN_DATE")
protected Date lastLoginDate;

[TRACE] 2010-07-23 00:29:26,303 :org.hibernate.impl.SessionImpl.setFlushMode(SessionImpl.java:1316): setting flush mode to: NEVER