SpringAop

SpringAop面向切面的思想

就是在某个方法之前和之后插入

package biz;

import java.lang.reflect.Method;
import java.util.Arrays;

import org.springframework.aop.AfterReturningAdvice;

public class MyAfter implements AfterReturningAdvice{

	public void afterReturning(Object arg0, Method arg1, Object[] arg2,
			Object arg3) throws Throwable {
		System.out.println("------------后置增强----------------");
		System.out.println("在"+arg3+"对象上的"+arg1.getName()+"方法");
		System.out.println("传入参数"+Arrays.toString(arg2));
		System.out.println("返回的结果"+arg0);
		
	}

}

package biz;

import java.lang.reflect.Method;
import java.util.Arrays;

import org.springframework.aop.MethodBeforeAdvice;

public class MyBefore  implements MethodBeforeAdvice{

	public void before(Method arg0, Object[] arg1, Object arg2)
			throws Throwable {
		System.out.println("------------前置增强-------------");
		System.out.println("在"+arg2+"对象上的"+arg0.getName()+"方法");
		System.out.println("传入参数"+Arrays.toString(arg1));
		System.out.println("---------------------------");
		
	}

}

	
	<bean id="before" class="biz.MyBefore"/>
	<bean id="after" class="biz.MyAfter"/>
	<aop:config>
	<aop:pointcut id="cutpiont" expression="execution(public void print(String))"/>
	<aop:advisor pointcut-ref="cutpiont" advice-ref="before"/>
		<aop:advisor pointcut-ref="cutpiont" advice-ref="after"/>
	</aop:config>