跪求高手解决ssh问题

远航的帆 2012-06-11 08:13:41

数据库有数据，但就是查询不到，用的sqlserver2005,
代码如下：

public T queryEntity(T t,Serializable id) throws Exception{
try{
return (T) this.getHibernateTemplate().load(Class.forName(t.getClass().getName()), id);

}catch(RuntimeException e){
logger.error("查询实体异常"+t.getClass().getName(),e);
throw e;
}
}

测试类：
public class Test {
public static void main(String[] args) {
Function function =new Function();
AuthorityDaoImpl authorityDaoImpl=new AuthorityDaoImpl();
try {
authorityDaoImpl.queryAllEntity(function);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();

}
}
}

报如下错误：

log4j:WARN No appenders could be found for logger (com.hr.platform.dao.BaseHibernateDao).
log4j:WARN Please initialize the log4j system properly.
java.lang.NullPointerException
at com.hr.platform.dao.BaseHibernateDao.queryAllEntity(BaseHibernateDao.java:63)
at com.hr.authority.test.Test.main(Test.java:11)

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shenjianox 2012-06-12

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l楼上说的对啊没注入

rushly 2012-06-12

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没注入你果断打个断点看看this.getHibernateTemplate().是不是null

rushly 2012-06-12

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public class Test {

public static void main(String[] args) {

Function function =new Function();

AuthorityDaoImpl authorityDaoImpl=new AuthorityDaoImpl();

try {

authorityDaoImpl.queryAllEntity(function);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();



}

}

}

AuthorityDaoImpl authorityDaoImpl=new AuthorityDaoImpl();没住人啊你直接new出来的不是通过spring得到的 spring懒得管你

远航的帆 2012-06-12

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注入了啊，是不是事务的问题，

<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>

<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>

<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="modify*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>

<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="query*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="load*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="allManagerMethod"
expression="execution (* com.hr.*.dao.impl.*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="allManagerMethod" />

</aop:config>
<aop:config>
<aop:pointcut id="platallManagerMethod"
expression="execution (* com.hr.*.dao.*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="platallManagerMethod" />

</aop:config>
<aop:aspectj-autoproxy proxy-target-class="true" />

tryandlearn 2012-06-11