使用MethodInterceptor实现AOP

1. 先写出业务对象接口及实现业务对象。

 

public interface Interface {
    public void hello();
}

   这里写俩个实现。

public class InterfaceImpl implements Interface {

    /** 
     * @see com.alipay.aop.BusinessInterface#hello()
     */
    @Override
    public void hello() {
        System.out.println("AOP TEST!!");
    }
}

 

 

public class InterfaceImplTest implements Interface {

    /** 
     * @see aop.Interface#hello()
     */
    @Override
    public void hello() {
        System.out.println("helo world!!");
    }

}

 

 

2. 实现自己的代理，创建自己的interceptor

 

public class MyInterceptor implements MethodInterceptor {

    /** 
     * @see org.aopalliance.intercept.MethodInterceptor#invoke(org.aopalliance.intercept.MethodInvocation)
     */
    @Override
    public Object invoke(MethodInvocation methodInvocation) throws Throwable {
        String info = methodInvocation.getMethod().getDeclaringClass()+ "." + 
        methodInvocation.getMethod().getName() + "()";
        
        System.out.println(info);
        
        try{
            Object result = methodInvocation.proceed();
            return result;
        }
        finally{
            System.out.println(info);
        }
    }
}

 

3. 配置文件

 <?xml version="1.0" encoding="GBK"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:sofa="http://img.alipay.net/dtd/schema/service"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:webflow="http://www.springframework.org/schema/webflow-config"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
         http://img.alipay.net/dtd/schema/service http://img.alipay.net/dtd/schema/service/sofa-service.xsd
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
         http://www.springframework.org/schema/webflow-config http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd"
	default-autowire="byName">
	
	<bean id="beanTarget" class="aop.InterfaceImpl"/>
	
	<bean id="hello" class="aop.InterfaceImplTest" />
	
	<bean id="myInterceptor" class="aop.MyInterceptor"/>
	
	<bean id="bean" class="org.springframework.aop.framework.ProxyFactoryBean">
		<property name="proxyInterfaces">
			<value>aop.Interface</value>
		</property>
		
		<property name="interceptorNames">
			<list>
				<value>myInterceptor</value>
				<value>beanTarget</value>
			</list>
		</property>
	</bean>
	
	<bean id="testBean" class="org.springframework.aop.framework.ProxyFactoryBean">
		<property name="proxyInterfaces">
			<value>aop.Interface</value>
		</property>
		
		<property name="interceptorNames">
			<list>
				<value>myInterceptor</value>
				<value>hello</value>
			</list>
		</property>
	</bean>
</beans>

 

 

 

4. 测试代码

 

 

public class Main {

    /**
     * 
     * @param args
     */
    public static void main(String[] args) {
        ClassPathResource resource = new ClassPathResource("spring.xml");
        XmlBeanFactory beanFactory = new XmlBeanFactory(resource);
        Interface bean = (Interface)beanFactory.getBean("bean");
        bean.hello();
        
        Interface testBean = (Interface)beanFactory.getBean("testBean");
        testBean.hello();
    }
}

评论

3 楼 nhy338 2012-08-28  

mark,留着以后看

2 楼 爪哇夜未眠 2011-11-18  

这个是spring里面的方法拦截

1 楼 sunnylocus 2011-10-13  

做下标记，明天有空仔细研究下方法拦截，感觉这是好东西！