动态代理

动态代理

	public class Actor implements  Agency{
    public void basicAct(float money) {
        System.out.println("基本动作---》" + money);
    }

    public void dangerAct(float money) {
        System.out.println("危险动作---》" + money);
    }
}

public interface Agency {

    public void basicAct(float money);

    public void dangerAct(float money);
}

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

public class Cast {
    public static void main(String[] args) {
        Actor actor = new Actor();
        Agency agency = (Agency) Proxy.newProxyInstance(actor.getClass().getClassLoader(), actor.getClass().getInterfaces(), new InvocationHandler() {
            @Override
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                float money = (float) args[0];
                if ("basicAct".equals(method.getName())) {
                    if (money > 10000) {
                        proxy = method.invoke(actor, money / 2);
                    }
                }
                if ("dangerAct".equals(method.getName())) {
                    if (money > 40000) {
                        proxy = method.invoke(actor, money / 2);
                    }
                }

                return proxy;
            }

        });
        agency.basicAct(20000);
        agency.dangerAct(60000);
    }
}