package com.foc;

public interface IOrderService {
     void submitOrder();
}


package com.foc.impl;

import com.foc.IOrderService;

public class OrderService implements IOrderService {


    @Override
    public void submitOrder() {
System.out.println("下订单");
    }
}





package com.foc.rpc;

import java.lang.reflect.Proxy;

public class ProcyManager<T> {
    private Class<T> clazz;
    private T target;


    public ProcyManager(Class<T> clazz, T target) {
        this.clazz = clazz;
        this.target = target;
    }

    public T getInstance(){
        return (T) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),clazz.getInterfaces(),new ProxyInvocation<T>(target));
    }
}



package com.foc.rpc;

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

public class ProxyInvocation<T> implements InvocationHandler {
    private T target;

    public ProxyInvocation(T target) {
        this.target = target;
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        System.out.println("Proxy start。。。"+method.getName());
        method.invoke(target,args);
        System.out.println("Proxy end..."+method.getName());
        return null;
    }

}




package com.foc;

import com.foc.impl.OrderService;
import com.foc.rpc.ProcyManager;

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

public class ProxyTest {
    public static void main(String[] args) {
        IOrderService service= new ProcyManager<OrderService>(OrderService.class,new OrderService()).getInstance();
        service.submitOrder();
    }
}