1.ArithmeticCalculator.java

package com.huanlgiusong.spring.aop.hello;public interface ArithmeticCalculator {int add(int i,int j);int sub(int i,int j);int mul(int i,int j);int div(int i,int j);
}

2.ArithmeticCalculatorImpl.java

package com.huanlgiusong.spring.aop.hello;public class ArithmeticCalculatorImpl implements ArithmeticCalculator {@Overridepublic int add(int i, int j) {int result = i + j;return result;}@Overridepublic int sub(int i, int j) {int result = i - j;return result;}@Overridepublic int mul(int i, int j) {int result = i * j;return result;}@Overridepublic int div(int i, int j) {int result = i / j;return result;}}

3.ArithmeticCalculatorLoggingProxy.java

package com.huanlgiusong.spring.aop.hello;import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.Arrays;import org.aopalliance.intercept.Invocation;/*** 动态代理* @author Administrator**/
public class ArithmeticCalculatorLoggingProxy {//要代理的对象private ArithmeticCalculator target;public ArithmeticCalculatorLoggingProxy(ArithmeticCalculator target) {this.target=target;}public ArithmeticCalculator getLoggingProxy(){ArithmeticCalculator proxy=null;//代理对象由哪个类加载器加载ClassLoader loader=target.getClass().getClassLoader();//代理对象的类型 即其中那些方法Class[]  interfaces=new Class[]{ArithmeticCalculator.class};//当调用代理对象其中的方法时 需要执行的代码InvocationHandler h=new InvocationHandler() {/*** proxy正在返回的那个代理对象 一般情况下在invoke方法中不适用对象* method:正在被调用的方法* args:正在被调用方式时传入的参数*/@Overridepublic Object invoke(Object proxy, Method method, Object[] args)throws Throwable {System.out.println("invoke。。。");//日志System.out.println("这个方法是"+method.getName());System.out.println("这个方法参数是："+Arrays.asList(args));//执行方法Object result=method.invoke(target, args);return result;}};proxy=(ArithmeticCalculator) Proxy.newProxyInstance(loader, interfaces, h);return proxy;}}

4.ArithmeticImpl.java

package com.huanlgiusong.spring.aop.hello;public class ArithmeticImpl implements ArithmeticCalculator {@Overridepublic int add(int i, int j) {System.out.println("这个方法是加法运算<开始>" + i + "+" + j);int result = i + j;System.out.println("这个方法是加法运算<结束>" + i + "+" + j + "=" + result);return result;}@Overridepublic int sub(int i, int j) {System.out.println("这个方法是-法运算<开始>" + i + "+" + j);int result = i - j;System.out.println("这个方法是-法运算<结束>" + i + "-" + j + "=" + result);return result;}@Overridepublic int mul(int i, int j) {System.out.println("这个方法是*法运算<开始>" + i + "+" + j);int result = i * j;System.out.println("这个方法是*法运算<结束>" + i + "*" + j + "=" + result);return result;}@Overridepublic int div(int i, int j) {System.out.println("这个方法是/法运算<开始>" + i + "+" + j);int result = i / j;System.out.println("这个方法是/法运算<结束>" + i + "/" + j + "=" + result);return result;}}

5.TestArithmetic.java

package com.huanlgiusong.spring.aop.hello;import org.junit.Test;public class TestArithmetic {@Testpublic void test1() {int result = 0;ArithmeticCalculator arithmeticCalculator = null;arithmeticCalculator = new ArithmeticCalculatorImpl();result = arithmeticCalculator.add(1, 1);System.out.println("result>>" + result);result = arithmeticCalculator.sub(1, 1);System.out.println("result>>" + result);result = arithmeticCalculator.div(1, 1);System.out.println("result>>" + result);result = arithmeticCalculator.mul(1, 1);System.out.println("result>>" + result);}@Testpublic void test2(){ArithmeticCalculator target=new ArithmeticCalculatorImpl();ArithmeticCalculator proxy=new ArithmeticCalculatorLoggingProxy(target).getLoggingProxy();int result = proxy.add(1, 2);System.out.println("result>>" + result);result = proxy.sub(1, 3);System.out.println("result>>" + result);result = proxy.div(1, 4);System.out.println("result>>" + result);result = proxy.mul(1, 5);System.out.println("result>>" + result);}
}