Hibernate拦截器不工作 [英] Hibernate Interceptor Not Working

问题描述

我有一个简单的HibernateInterceptor，其中基本上我想自动设置几个字段。这个拦截器（如下所示）扩展了EmptyInterceptor：

  public class EntityAuditInterceptor extends EmptyInterceptor {
 
 / ** 
 *串行版本UUID。 
 * / 
 private static final long serialVersionUID = 4636626262147801287L; 
 $ b $ *（非Javadoc）
 * @see org.hibernate.EmptyInterceptor＃onFlushDirty（java.lang.Object，java.io.Serializable，java.lang.Object []， java.lang.Object []，java.lang.String []，org.hibernate.type.Type []）
 * / 
 public boolean onFlushDirty（Object entity，Serializable id，Object [] currentState ，Object [] previousState，String [] propertyNames，Type [] types）{
 
 //在这里做东西
 
 return false; 
 
 $ b $ *（非Javadoc）
 * @see org.hibernate.EmptyInterceptor＃onSave（java.lang.Object，java.io.Serializable，java.lang .Object []，java.lang.String []，org.hibernate.type.Type []）
 * / 
 public boolean onSave（Object entity，Serializable id，Object [] state，String [ ] propertyNames，Type []类型）{
 
 //在这里做的事
 return false; 
 
 
 
 
 $ b我使用弹簧配置文件进行接线，如下所示：  
 
 
 <！ -  Hibernate SessionFactory  - > 
< bean id =sessionFactoryclass =org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean> 
< property name =dataSourceref =hsqlDbDataSource/> 
 
< property name =packagesToScan> 
< list> 
< value> com.dreamteam.lms。**。*< / value> 
< / list> 
< / property> 
 
 <！ - 在此处添加拦截器 - > 
< property name =entityInterceptor> 
< bean class =com.dreamteam.lms.interceptors.EntityAuditInterceptor>< / bean> 
< / property> 
 
 
< property name =hibernateProperties> 
<道具> 
<！ - < prop key =hibernate.dialect> org.hibernate.dialect.MySQLDialect< / prop>  - > 
< prop key =hibernate.dialect> org.hibernate.dialect.HSQLDialect< / prop> 
< prop key =hibernate.generate_statistics> true< / prop> 
< prop key =hibernate.show_sql> true< / prop> 
< prop key =hibernate.cache.use_second_level_cache> true< / prop> 
< prop key =hibernate.hbm2ddl.auto>建立< / prop> 
< prop key =hibernate.cache.use_query_cache> true< / prop> 
< prop key =hibernate.cache.provider_class> net.sf.ehcache.hibernate.SingletonEhCacheProvider< / prop> 
< /道具> 
< / property> 
< / bean> 
  
但是，拦截器永远不会到达。有没有人有任何线索？我也尝试在事务管理器bean定义中添加以下内容： 
 
 
 < property name =entityInterceptor> 
< ref local =entityAuditInterceptor/> 
< / property> 
  
 
 
解决方案
好的，只是为了记录，我解决了这个问题结果这是我的一个愚蠢的错误。  
 
 
当我实现了扩展EmptyInterceptor的拦截器时，我添加了方法'onFlushDirty'等等。到现在为止还挺好。问题在于，在使用我的IDE自动导入使用的类时，我最终导致错误地导入了java.reflect.Type而不是org.hibernate.type.Type。因此，我并不是真正覆盖拦截器方法！
 
 
 
我注意到当我将@Override拦截器添加到我的方法中时。
 
 
 
另一个谜题解决了......）
I have a simple HibernateInterceptor in which basically I want to set a few fields automatically. This interceptor (shown below) extends EmptyInterceptor:
public class EntityAuditInterceptor extends EmptyInterceptor {

    /**
     * The Serial Version UUID.
     */
    private static final long serialVersionUID = 4636626262147801287L;

    /* (non-Javadoc)
     * @see org.hibernate.EmptyInterceptor#onFlushDirty(java.lang.Object, java.io.Serializable, java.lang.Object[], java.lang.Object[], java.lang.String[], org.hibernate.type.Type[])
     */
    public boolean onFlushDirty(Object entity,  Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) {

        // doing stuff here

        return false;
    }

    /* (non-Javadoc)
     * @see org.hibernate.EmptyInterceptor#onSave(java.lang.Object, java.io.Serializable, java.lang.Object[], java.lang.String[], org.hibernate.type.Type[])
     */
    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {

                // doing stuff here
        return false;
    } 
}
I am wiring using a spring config file as follows:
<!-- Hibernate SessionFactory -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="hsqlDbDataSource"/>

        <property name="packagesToScan">
            <list>
                <value>com.dreamteam.lms.**.*</value>
            </list>
        </property>

        <!-- Adding Interceptor here -->
        <property name="entityInterceptor">
            <bean class="com.dreamteam.lms.interceptors.EntityAuditInterceptor"></bean>
        </property>


        <property name="hibernateProperties">
            <props>
                <!--<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>-->
                <prop key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop>
                <prop key="hibernate.generate_statistics">true</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.cache.use_second_level_cache">true</prop>
                <prop key="hibernate.hbm2ddl.auto">create</prop>
                <prop key="hibernate.cache.use_query_cache">true</prop>
                <prop key="hibernate.cache.provider_class">net.sf.ehcache.hibernate.SingletonEhCacheProvider</prop>
            </props>
        </property>
    </bean>
However, the Interceptor is never reached. Does anyone have any clue? I have also tried adding the following to the transaction manager bean definition as follows:
<property name="entityInterceptor">
        <ref local="entityAuditInterceptor"/>
    </property>

解决方案
Ok, just for the record, I solved this problem which turned out to be a stupid mistake from my part. 

When I implemented my interceptor that extends EmptyInterceptor I added the method 'onFlushDirty' and so on. So far so good. The problem was that on using my IDE to auto-import the used classes, I ended up importing java.reflect.Type instead of org.hibernate.type.Type by mistake. Hence, I was not really overriding the interceptor method!

I noticed that when I added the @Override interceptor to my method.

Another mystery solved ... :)

                        
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