spring原拦截器配置与新命名空间mvc:interceptors配置拦截器对比与注意事项
来源:程序员人生 发布时间:2014-09-16 02:40:32 阅读次数:2506次
原先
,我们是这么配置拦截器的
<bean id="openSessionInViewInterceptor"class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<beanclass="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
<property name="interceptors">
<list>
<ref bean="openSessionInViewInterceptor"/>
<bean class="com.jumbo.interceptor.MetaInfoInterceptor"/>
</list>
</property>
</bean>
原配置方式结合新命名空间mvc:interceptors配置方式:
<mvc:annotation-driven />
<!-- *************openSessionInViewInterceptor *************-->
<bean id="openSessionInViewInterceptor"class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!--
**************interceptors **************************
-->
<beanclass="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
<property name="interceptors">
<list>
<ref bean="openSessionInViewInterceptor" />
</list>
</property>
</bean>
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**/*.htm" />
<bean id="metaInfoInterceptor" class="com.jumbo.web.interceptor.MetaInfoInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
这样对吗???
由于<mvc:annotation-driven />会自动注册DefaultAnnotationHandlerMapping和AnnotationMethodHandlerAdapter两个实例,
<span style="color:#FF6666;"><beanclass="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"></span>
这儿又注册一次导致导致没有openSessionInViewInterceptor,产生了no session的 异常
所以:放弃原拦截器配置方式拥抱新的方法:
<mvc:annotation-driven />
<mvc:interceptors>
<!--*************openSessionInViewInterceptor ************* -->
<bean id="openSessionInViewInterceptor"class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<mvc:interceptor>
<mvc:mapping path="/**/*.htm" />
<bean id="metaInfoInterceptor" class="com.jumbo.web.interceptor.MetaInfoInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
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