java 动态代理

// 代理的接口
public interface ManToolsFactory { 
    void saleManTools(String size);
}


public class AaFactory implements ManToolsFactory {
    @Override
    public void saleManTools(String size) {
        System.out.println("按需求定制了一个size为"+size+"的model");
    }
}

// 代理类
public class MarkCompany implements InvocationHandler {

    /*持有的真实对象*/
    private Object factory;

    public Object getFactory() {
        return factory;
    }

    public void setFactory(Object factory) {
        this.factory = factory;
    }

    /*通过Proxy获得动态代理对象*/
    public Object getProxyInstance(){
        return Proxy.newProxyInstance(factory.getClass().getClassLoader(),
                factory.getClass().getInterfaces(),this);
    }

    /*通过动态代理对象方法进行增强*/
    @Override
    public Object invoke(Object proxy, Method method, Object[] args)            throws Throwable {
            throws Throwable 
  
        Object result = method.invoke(factory, args);
        return result;
    }
    
    
 public class Client {

    public static void main(String[] args) {
        /*动态代理模式---------------*/
        ManToolsFactory aafactory = new AaFactory();
        MarkCompany markCompany = new MarkCompany();

        markCompany.setFactory(aafactory);
        ManToolsFactory employee1
                = (ManToolsFactory)markCompany.getProxyInstance();
        employee1.saleManTools("E");
    }
  }