Spring 2.0 AOP编程 方法拦截机 MethodInterceptor Demo

Spring 2.0 AOP编程 方法拦截机 MethodInterceptor Demo
2009-09-08 09:51

转帖：http://www.ziki.cn/blog/archives/1167792771.html

Spring 2.0 AOP编程 方法拦截机
1)书写方法拦截机 实现 org.aopalliance.intercept.MethodInterceptor
例如MethodInterceptorDemo.java

package dao.impl;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class MethodInterceptorDemo implements MethodInterceptor ,java.io.Serializable{
//如果你的方法被远程调用那么实现java.io.Serializable
private static final long serialVersionUID = 7701217096849783690L;

public Object invoke(MethodInvocation arg0) throws Throwable {
System.out.println("Before");
Object obj = (java.io.Serializable)arg0.proceed();//远程调用 否则会抛出Not Serializable
System.out.println("End");
return obj;
}

}

2)配置拦截applicationContext.xml

<!--  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Method Interceptor demo~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-->




<bean id="methodInterceptorDemo" class="dao.impl.MethodInterceptorDemo"/>

<bean id="methodPointcutDemo" class="org.springframework.aop.support.JdkRegexpMethodPointcut">
<property name="patterns">
<list>
<value>.*get</value>
<value>.*find</value>
</list>
</property>
</bean>


<bean id="methodAdvisorDemo" class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="pointcut" ref="methodPointcutDemo"/>
<property name="advice" ref="methodInterceptorDemo"/>
</bean>

<bean id="methodAdvisorDemo1" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<property name="advice" ref="methodInterceptorDemo" />
<property name="patterns">
<list>
<value>.*get</value>
<value>.*find</value>
</list>
</property>
</bean>

<bean id="genericDao" class="dao.impl.GenericDaoHibernateImpl">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!--  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Interceptor genericDao method get/find~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-->
<bean id="genericDao-proxy" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="proxyInterfaces">
<value>dao.GenericDao</value>
</property>
<property name="target" ref="genericDao" />
<property name="interceptorNames">
<list>
<value>methodAdvisorDemo</value>        <!-- or --> <!--  <value>methodAdvisorDemo1</value> -->
</list>
</property>
</bean>   
<!--  ~~~~~~~~~~