新手 Spring 中的 getHibernateTemplate() 空指针 疯了

Question

是直接测试还是用在WEB里测试啊>

Answer 1

在你的web.xml文件中有没有配置SPRING
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param> <filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>false</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

Answer 2

spring配置hibernateTemplate时候用
<property name="sessionFactory">
 <ref bean="sessionFactory" />
</property>
试试

Answer 3

你的spring 文件里面的sessionfactory配置肯定有问题.得不到数据库的连接

Answer 4

    <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"> 
        <constructor-arg> 
          <ref local="sessionFactory" /> 
        </constructor-arg> 
    </bean> 
去掉！

Answer 5

web.xml加上<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>
</filter>

Answer 6

web.xml加上<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</filter-class>
</filter>

Answer 7

应该 把 hibernateTemplate注入到你的UserDaoImpl里面，
而不是sessionFactory注入 UserDaoImpl。