Hibernate Spring的调整求高手指导快要崩溃了

Hibernate Spring的整合求高手指导快要崩溃了

Java code

public Book selectBook(String ISBN){        System.out.println(ISBN);    List list=this.getHibernateTemplate().find("from Book where ISBN=?",ISBN); //报错就是这一行    Book book=null;    if(list.size()>0)    {        book=(Book)list.get(0);    }    return book;    }

/////*******************////

Java code

public interface BookDao {                public void addBook(Book book);        public void deleteBook(String ISBN);        public void updateBook(Book book);        public Book selectBook(String ISBN);            }

///////////////**************////////

Java code

public interface StudentService {public Student selectStudent(String readerId);}

网页报错/////////////***///////
java.lang.NullPointerException
org.Dao.impl.BookDaoImpl.selectBook(BookDaoImpl.java:14)
org.action.BookAction.selectBook(BookAction.java:107)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)

------解决方案--------------------------------------------------------
跟踪一下看看你的this.getHibernateTemplate()是不是空的?
------解决方案--------------------------------------------------------
BookDaoImpl有木有继承HibernateDaoSupport？
------解决方案--------------------------------------------------------
那你怎么配置的sessionFactory贴出来
------解决方案--------------------------------------------------------

探讨

1.在配置文件中配置
<!-- hibernateTemplate设置 -->
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
……