最近使用struts2+spring3+hibernate3.3做练习测试，引入jpa生成Dao，最后用Action调用dao的时候显示null，请朋友们帮忙啊
代码如下：
applicationContext.xml:
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
<property name="persistenceUnitName" value="sshPU" />
</bean>
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory"
ref="entityManagerFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" /><bean
id="BsTAssessUpdeventDAO"
class="com.tanyao.ibm.daoImp.BsTAssessUpdeventDAO">
<property name="entityManagerFactory"
ref="entityManagerFactory" />
</bean>
<bean id="BsTAssessEquipmentDAO"
class="com.tanyao.ibm.daoImp.BsTAssessEquipmentDAO">
<property name="entityManagerFactory"
ref="entityManagerFactory" />
</bean>
<bean id="BsTAssessJichengshangDAO"
class="com.tanyao.ibm.daoImp.BsTAssessJichengshangDAO">
<property name="entityManagerFactory"
ref="entityManagerFactory" />
</bean>
<bean id="BsTAssessActDAO"
class="com.tanyao.ibm.daoImp.BsTAssessActDAO">
<property name="entityManagerFactory"
ref="entityManagerFactory" />
</bean>
</beans>
Action:
public class Demo2Action extends ActionSupport implements ServletRequestAware{
private BsTAssessActDAO bstassessactdao;
private IBsTAssessActDAO ibstassessactdao;
private BsTAssessAct bstassessact;
public String demo1()
{
bstassessact = bstassessactdao.findById("402880ee3122d803013122d92c80002d");
System.out.println(ibstassessactdao+"输出的内容是月份："+bstassessact.getMonth());
return SUCCESS;
}
public void setServletRequest(HttpServletRequest arg0) {
// TODO Auto-generated method stub
}
/**
* @return the bstassessactdao
*/
public BsTAssessActDAO getBstassessactdao() {
return bstassessactdao;
}
/**
* @param bstassessactdao the bstassessactdao to set
*/
public void setBstassessactdao(BsTAssessActDAO bstassessactdao) {
this.bstassessactdao = bstassessactdao;
}
/**
* @return the bstassessact
*/
public BsTAssessAct getBstassessact() {
return bstassessact;
}
/**
* @param bstassessact the bstassessact to set
*/
public void setBstassessact(BsTAssessAct bstassessact) {
this.bstassessact = bstassessact;
}
/**
* @return the ibstassessactdao
*/
public IBsTAssessActDAO getIbstassessactdao() {
return ibstassessactdao;
}
/**
* @param ibstassessactdao the ibstassessactdao to set
*/
public void setIbstassessactdao(IBsTAssessActDAO ibstassessactdao) {
this.ibstassessactdao = ibstassessactdao;
}
}
调用dao的时候后台不报bug，前台jsp界面直接显示NullPointException，代码指向action的dao，我调试debug发现dao为空，请朋友们帮忙看看，如何实现spring注入hibernate，然后调用到的~
------解决方案--------------------
最好给dao的代码看看，继承hibernatedaosupport类了吗？配置 里我没看到就hibernateTimplte的注入！
例如：
public class BaseDAOImpl<T> extends HibernateDaoSupport implements BaseDAO<T> {
现在我倒认为你的配置文件有问题，有点乱，没仔细看，你再试试
------解决方案--------------------
我也没看你上面这么多代码，太多了，
大概出现这问题的原因
1.你的配置和你在action对应的dao不一样，（很可能是你配置首写的是大写，在action却是小写），