Java行为型设计模式之外观设计模式详解

public class PackService {
    /**
     * 水果打包：防伪/加固/加急等
     */
    public void doPack(){
        AbstractFactory factory = new AppleFactory();
        /*得到包装*/
        Bag bag = factory.getBag();
        /*现需要增加防伪标识*/
        /*防伪功能*/
        bag = new CheckedBagDecorator(bag);
        /*加固功能*/
        bag = new ReinforceBagDecorator(bag);
        /*加急功能*/
        bag = new SpeedDecorator(bag);
        bag.pack();
    }
    public void doSomeThine(){
        System.out.println("doSomeThine");
    }
}
public class PickService {
    /**
     * 采摘水果
     */
    public void doPick(){
        //袋子型号
        BagAbstraction pickBag = new SmallBag();
        //袋子材质
        Material material = new Paper();
        pickBag.setMaterial(material);
        //开始采摘
        pickBag.pick();
    }
    public void doSomeThine(){
        System.out.println("doSomeThine");
    }
}
public class SendService {
    /**
     * 指定目的地，发送快递
     */
    public void doSend(){
        //根目录
        DistrictNode root = new DistrictNode("china");
        //一线目录
        root.addChild(new DistrictNode("shang hai"));
        root.addChild(new DistrictNode("tian jin"));
        DistrictNode districtNode = new DistrictNode("bei jing");
        root.addChild(districtNode);
        //二级目录
        districtNode.addChild(new DistrictNode("hai dian qu"));
        districtNode.addChild(new DistrictNode("xi cheng qu"));
        DistrictNode districtNode2 = new DistrictNode("chao yang qu");
        districtNode.addChild(districtNode2);
        //三级目录
        districtNode2.addChild(new LeafNode("san li tun "));
        districtNode2.addChild(new LeafNode("guo mao"));
        System.out.println("请选定目的地："+ JsonOutput.toJson(root));
        /*以下物流运输业务*/
        System.out.println("本次快递目的地：beijing-chanyangqu-sanlitun");
    }
    public void doSomeThine(){
        System.out.println("doSomeThine");
    }
}
//外观类
public class OrderFacade {
    private PickService pickService;
    private PackService packService;
    private SendService sendService;
    public OrderFacade(){
        pickService = new PickService();
        packService = new PackService();
        sendService = new SendService();
    }
    /**
     * 客户订单处理类
     */
    public void doOrder(){
        /*采摘*/
        System.out.println("--------------");
        pickService.doPick();
        /*包装*/
        System.out.println("--------------");
        packService.doPack();
        /*快递*/
        System.out.println("--------------");
        sendService.doSend();
    }
}
 public static void main(String[] args){
        OrderFacade orderFacade = new OrderFacade();
        orderFacade.doOrder();
    }