Java 实现动态代理实现AOP

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package com.chinasofti.bean;

public interface user {

public void print (int d);

}

注意：aop 的所有操作都是面向接口的.

package com.chinasofti.bean;

public class userImp implements user {

@Override
public void print(int d) {
System.out.println("cyc是帅哥！");
}

}

package com.chinasofti.test;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class TestFactory implements InvocationHandler {

private Object obj;

public Object test(Object obj){
this.obj = obj;
return Proxy.newProxyInstance(this.obj.getClass().getClassLoader(),this.obj.getClass().getInterfaces(),this);
}

@Override
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
System.out.println(args[0]);
if(!method.getName().equals("prints")){

return method.invoke(obj, args);
}

return null;
}

}

import com.chinasofti.bean.user;
import com.chinasofti.bean.userImp;

public class test {

@Test
public void test(){
TestFactory tf = new TestFactory();
user u = new userImp();
user u2 = (user)tf.test(u);//这里要注意用父类的引用
u2.print(100);

}
}

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