反射-动态代理(实例)

//生产车间
public interface ClothingFactory {

void productClothing();

}
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//李宁公司
public class LiNing implements ClothingFactory{

@Override
public void productClothing() {
    System.out.println("生产出李宁服装一批");
}

}
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//动态代理类
public class DynaProxyHandler implements InvocationHandler {
// 目标对象
private Object target;

public Object newProxyInstance(Object target) {
    this.target = target;
    return Proxy.newProxyInstance(this.target.getClass().getClassLoader()//类加载器
            , this.target.getClass().getInterfaces()//代理要实现的借口列表
            , this//调用处理程序
            );
}

@Override
public Object invoke(Object proxy, Method method, Object[] args)
        throws Throwable {
    Object result = null;
    try {
        result = method.invoke(this.target, args);//通过反射调用目标对象上对应的方法
    } catch (Exception e) {
        // TODO Auto-generated catch block
        throw e;
    }
    return result;
}

}

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public class Customer {

public static void main(String[] args) {
    DynaProxyHandler handler = new DynaProxyHandler();

    ClothingFactory cf=(ClothingFactory) handler.newProxyInstance(new LiNing());

    cf.productClothing();
}

}