Hibernate没有更新记录 - Wicket

时间：2010-07-22 21:03:44

标签： java hibernate wicket

我正在使用Wicket，Spring和Hibernate开发Web应用程序，我遇到了更新记录的问题。我已经验证调用了saveOrUpdate方法，并且域对象中的数据已更改。但是，SQL输出不会显示已对数据库进行任何更改（示例中为UPDATE），并且尚未更新受影响的记录。

我认为使用update（）更有意义，但saveOrUpdate（）确实设法创建新记录，但它不会更新它们。我已经验证了这个方法被调用，并且传递的UserVO确实包含更新的字段。这是DAO方法： 

public class SkuldwebDAOImpl extends HibernateDaoSupport implements SkuldwebDAO {
    public void updateUser(UserVO userVO) {
        getSession().saveOrUpdate(userVO);
    }
}

这是我的属性文件： 

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

这是applicationContext.xml中的sessionFactory bean： 

<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>

希望你们其中一人可以帮助我。

更新以下是日志中的一些信息（onSubmit（）在日志中设置这些条目 - 最后一个条目应该是将请求重定向到另一个页面时（记录应该有已更新）。


[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]

更新2 这是没有getter / setter的UserVO 

@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;




@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;

2 个答案:

答案 0 :(得分：25)

Hibernate通常会延迟更新，直到会话被刷新为止。要测试这是否是您的问题，请在更新语句后插入getSession().flush()。

您如何管理交易？提交会话时将自动刷新，但如果您的事务配置有问题，您可能最终提交JDBC连接但不提交与Hibernate会话绑定的事务。

编辑：根据您的更新，我看到FlushMode在某一行设置为NEVER：

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

我怀疑这是问题所在。它会导致会话永远不会自动刷新 - 这通常是您想要在只读事务中执行的操作，而不是在修改数据时。看起来你在没有事务的情况下运行（autocommit设置为true - 这不是推荐的方式）。 OpenSessionInViewFilter的Javadoc提供了一些线索：

  

默认情况下，此过滤器不会刷新Hibernate会话，刷新模式设置为FlushMode.NEVER。它假定与关注刷新的服务层事务结合使用：活动事务管理器将在读写事务期间临时将刷新模式更改为FlushMode.AUTO，并在最后将刷新模式重置为FlushMode.NEVER每笔交易。如果您打算在没有事务的情况下使用此过滤器，请考虑更改默认刷新模式（通过“flushMode”属性）。

换句话说，您有两个选择：将OpenSessionInViewFilter上的flushMode设置为AUTO，或者关闭自动提交并配置事务管理器，例如HibernateTransactionManager。

答案 1 :(得分：6)

由于您使用的是Spring，我建议您使用Spring的PlatformTransactionManager来管理您的事务。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任何这些方面。

Spring有一个OpenSessionInViewFilter，它连接到事务管理器来启动/刷新会话，你可以用Spring的@Transactional注释你的方法，以表明你想要一个特定方法的'write'事务。这应该更新您的记录。

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