[SSH]关于AfterReturningAdvice的一个有关问题！高手速进！

[SSH]关于AfterReturningAdvice的一个问题！！高手速进！！！
问题描述：在AfterReturningAdvice的实现类的afterReturning方法中查询失败
spring配置

XML code

    <!-- TransactionManager -->    <bean id="hibTransactionManager"        class="org.springframework.orm.hibernate3.HibernateTransactionManager">        <property name="sessionFactory" ref="sessionFactory" />    </bean>    <tx:advice id="txAdvice" transaction-manager="hibTransactionManager">        <tx:attributes>            <tx:method name="add*" propagation="REQUIRED" />            <tx:method name="del*" propagation="REQUIRED" />            <tx:method name="update*" propagation="REQUIRED" />            <tx:method name="select*" propagation="REQUIRED"/>            <tx:method name="search*" propagation="REQUIRED"/>            <tx:method name="insert*" propagation="REQUIRED" />            <tx:method name="do*" propagation="REQUIRED" />            <tx:method name="*" propagation="SUPPORTS" read-only="true" />        </tx:attributes>    </tx:advice>    <aop:config>        <aop:pointcut expression="execution(* biz.*.*(..))"            id="bizMethods" />        <aop:advisor advice-ref="txAdvice" pointcut-ref="bizMethods" />    </aop:config>    <!--        ********************************我是很长的分割线********************************    -->    <!-- Dao -->    <bean id="petDiaryDao" class="dao.impl.hib.PetDiaryDaoHibImpl">        <property name="sessionFactory" ref="sessionFactory" />    </bean>    <bean id="petInfoDao" class="dao.impl.hib.PetInfoDaoHibImpl">        <property name="sessionFactory" ref="sessionFactory" />    </bean>    <!--        ********************************我是很长的分割线********************************    -->    <!-- Biz -->    <bean id="petDiaryBizTarget" class="biz.impl.PetDiaryBizImpl">        <property name="petDiaryDao" ref="petDiaryDao" />    </bean>    <bean id="petInfoBizTarget" class="impl.PetInfoBizImpl">        <property name="petInfoDao" ref="petInfoDao" />    </bean>    <!--        ********************************我是很长的分割线********************************    -->    <!-- Advice -->    <bean id="lotteryAdvice" class="advice.LotteryAdvice">        <property name="petInfoBiz" ref="petInfoBizTarget" />    </bean>    <bean id="petInfoBiz" class="org.springframework.aop.framework.ProxyFactoryBean">        <property name="proxyInterfaces" value="biz.PetInfoBiz" />        <property name="interceptorNames" value="lotteryAdvice" />        <property name="target" ref="petInfoBizTarget" />    </bean>    <bean id="petDiaryBiz" class="org.springframework.aop.framework.ProxyFactoryBean">        <property name="ProxyInterfaces" value="biz.PetDiaryBiz" />        <property name="interceptorNames" value="lotteryAdvice" />        <property name="target" ref="petDiaryBizTarget" />    </bean>

LotteryAdvice类

Java code

         private PetInfoBiz petInfoBiz = null;    public void setPetInfoBiz(PetInfoBiz petInfoBiz) {        this.petInfoBiz = petInfoBiz;    }    public void afterReturning(Object resultValue, Method method,            Object[] args, Object target) throws Throwable {            PetDiary petDiary = (PetDiary)args[0];            [b]PetInfo petInfo = this.petInfoBiz.selectPetInfo(petDiary.getPetInfo().getPetId());[/b]//这里petInfo的值全部为空,并且SQL语句也不输出(petId有值,且在数据库中存在)            petInfo.setPetCute(petInfo.getPetCute()+10);            petInfo.setPetLove(petInfo.getPetLove()+10);            this.petInfoBiz.updatePet(petInfo);            System.out.println("["+petInfo.getPetName()+"]聪明+10,爱心+10");            } 
 

selectPetInfo方法

Java code

public PetInfo select(int pid) {        return (PetInfo) super.getHibernateTemplate().get(PetInfo.class, pid);    }

结果报null异常

Java code

org.springframework.dao.DataIntegrityViolationException: not-null property references a null or transient value: entity.PetInfo.petName; nested exception is org.hibernate.PropertyValueException: not-null property references a null or transient value: entity.PetInfo.petName

最后说明：在其她类调用该方法能取到值！！郁闷啊、谁能告诉我！！

[解决办法]
提示很明确 ，entity.PetInfo.petName 这个字段不允许为空 你查询出数据这个petName有null的数据



[解决办法]
lz这个错误org.springframework.dao.DataIntegrityViolationException，太明显了。。。

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