[新增功能](master): 更新了一些设计模式的代码及一些博客内容的收集整理

dev-protocol-design-pattern/README.md

@@ -113,6 +113,51 @@
 
 ---
 ### 单例模式
+
+#### 1 定义与类型
+  定义：保证一个类仅有一个实例,并提供一个全局访问点
+  类型：创建型
+#### 2 适用场景
+  想确保任何情况下都绝对只有一个实例
+#### 3 优点
+  在内存里只有一个实例,减少了内存开销
+  可以避免对资源的多重占用
+  设置了全局访问点,严格控制访问
+#### 4 缺点
+  没有接口,扩展困难
+#### 5 重点
+  私有构造器
+  线程安全
+  延迟加载
+  序列化和反序列化安全
+  反射
+#### 6 单例模式相关的设计模式
+  单例模式和工厂模式
+    - 可以把工厂类设计为单例的
+  单例模式和享元模式
+    - 享元模式是单例对象的一个工厂
+#### 7 Coding
+  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
 
 
 ---
@@ -126,8 +171,38 @@
 ---
 ### 外观模式
 
+#### 1 定义与类型
+  定义: 又叫门面模式,提供了一个统一的接口,用来访问子系统中的一群接口
+  外观模式定义了一个高层接口,让子系统更容易使用
+  类型: 结构型
 
+#### 2 使用场景
+  子系统越来越复杂,增加外观模式提供简单调用接口
+  构建多层系统结构,利用外观对象作为每层入口,简化层间调用
 
+#### 3 优点
+  简化了调用过程,无需了解深入子系统,防止带来风险
+  减少系统依赖,松散耦合
+  更好的划分访问层次
+  符合迪米特法则,即最少知道原则
+
+#### 4 缺点
+  增加子系统,扩展子系统行为行为很容易引入风险
+  不符合开闭原则
+
+#### 5 相关的设计模式
+  外观模式和中介者模式
+    - 外观模式关注是外部和子系统的交互
+    - 中介者模式关注是子系统内部的交互
+  外观模式和单例模式
+    - 外观模式中的独外观对象做成单例对象使用
+  外观模式和抽象工厂模式
+    - 外观类可以通过抽象工厂获取子系统的实例
+#### 6 coding
+  com.baiye.design.pattern.structural.facade
+
+
+---
 
 ### 装饰者模式
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/behavioral/interpreter/Interpreter.java

@@ -1,5 +0,0 @@
-package com.baiye.design.behavioral.interpreter;
-
-public interface Interpreter {
-    int interpret();
-}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/chainofresponsibility/Approver.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.chainofresponsibility;
+package com.baiye.design.pattern.behavioral.chainofresponsibility;
 
 public abstract class Approver {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/chainofresponsibility/ArticleApprover.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.chainofresponsibility;
+package com.baiye.design.pattern.behavioral.chainofresponsibility;
 
 
 public class ArticleApprover extends Approver{

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/chainofresponsibility/Course.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.chainofresponsibility;
+package com.baiye.design.pattern.behavioral.chainofresponsibility;
 
 public class Course {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/chainofresponsibility/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.chainofresponsibility;
+package com.baiye.design.pattern.behavioral.chainofresponsibility;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/chainofresponsibility/VideoApprover.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.chainofresponsibility;
+package com.baiye.design.pattern.behavioral.chainofresponsibility;
 
 public class VideoApprover extends Approver{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/interpreter/AddInterpreter.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.interpreter;
+package com.baiye.design.pattern.behavioral.interpreter;
 
 public class AddInterpreter implements Interpreter {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/interpreter/Interpreter.java

@@ -0,0 +1,5 @@
+package com.baiye.design.pattern.behavioral.interpreter;
+
+public interface Interpreter {
+    int interpret();
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/interpreter/MultiInterpreter.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.interpreter;
+package com.baiye.design.pattern.behavioral.interpreter;
 
 public class MultiInterpreter implements Interpreter{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/interpreter/MyExpressionParse.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.interpreter;
+package com.baiye.design.pattern.behavioral.interpreter;
 
 import java.util.Stack;
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/interpreter/NumberInterpreter.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.interpreter;
+package com.baiye.design.pattern.behavioral.interpreter;
 
 public class NumberInterpreter implements Interpreter{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/interpreter/OpratorUtil.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.interpreter;
+package com.baiye.design.pattern.behavioral.interpreter;
 
 public class OpratorUtil {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/interpreter/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.interpreter;
+package com.baiye.design.pattern.behavioral.interpreter;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/iterator/Course.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.iterator;
+package com.baiye.design.pattern.behavioral.iterator;
 
 public class Course {
     private String name;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/iterator/CourseAggregate.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.iterator;
+package com.baiye.design.pattern.behavioral.iterator;
 
 public interface CourseAggregate {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/iterator/CourseAggregateImpl.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.iterator;
+package com.baiye.design.pattern.behavioral.iterator;
 
 import java.util.ArrayList;
 import java.util.List;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/iterator/CourseIterator.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.iterator;
+package com.baiye.design.pattern.behavioral.iterator;
 
 public interface CourseIterator {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/iterator/CourseIteratorImpl.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.iterator;
+package com.baiye.design.pattern.behavioral.iterator;
 
 import java.util.List;
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/iterator/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.iterator;
+package com.baiye.design.pattern.behavioral.iterator;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/mediator/StudyGroup.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.mediator;
+package com.baiye.design.pattern.behavioral.mediator;
 
 import java.util.Date;
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/mediator/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.mediator;
+package com.baiye.design.pattern.behavioral.mediator;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/mediator/User.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.mediator;
+package com.baiye.design.pattern.behavioral.mediator;
 
 public class User {
     private String name;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/memento/Article.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.memento;
+package com.baiye.design.pattern.behavioral.memento;
 
 public class Article {
     private String title;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/memento/ArticleMemento.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.memento;
+package com.baiye.design.pattern.behavioral.memento;
 
 /**
  * 快照类

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/memento/ArticleMementoManager.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.memento;
+package com.baiye.design.pattern.behavioral.memento;
 
 import java.util.Stack;
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/memento/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.memento;
+package com.baiye.design.pattern.behavioral.memento;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/observer/Course.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.observer;
+package com.baiye.design.pattern.behavioral.observer;
 
 import java.util.Observable;
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/observer/Question.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.observer;
+package com.baiye.design.pattern.behavioral.observer;
 
 public class Question {
     private String userName;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/observer/Teacher.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.observer;
+package com.baiye.design.pattern.behavioral.observer;
 
 import java.util.Observable;
 import java.util.Observer;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/observer/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.observer;
+package com.baiye.design.pattern.behavioral.observer;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/state/CourseVideoContext.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.state;
+package com.baiye.design.pattern.behavioral.state;
 
 public class CourseVideoContext {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/state/CourseVideoState.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.state;
+package com.baiye.design.pattern.behavioral.state;
 
 public abstract class CourseVideoState {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/state/PauseState.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.state;
+package com.baiye.design.pattern.behavioral.state;
 
 
 /**

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/state/PlayState.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.state;
+package com.baiye.design.pattern.behavioral.state;
 
 public class PlayState extends CourseVideoState{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/state/SpeedState.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.state;
+package com.baiye.design.pattern.behavioral.state;
 
 public class SpeedState extends CourseVideoState{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/state/StopState.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.state;
+package com.baiye.design.pattern.behavioral.state;
 
 public class StopState extends CourseVideoState{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/state/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.state;
+package com.baiye.design.pattern.behavioral.state;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/EmptyPromotionStrategy.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 public class EmptyPromotionStrategy implements PromotionStrategy{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/FanxianPromotionStrategy.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 public class FanxianPromotionStrategy implements PromotionStrategy {
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/LIjianPromotionStrategy.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 public class LIjianPromotionStrategy implements PromotionStrategy{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/ManjianPromotionStrategy.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 public class ManjianPromotionStrategy implements PromotionStrategy{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/PromotionActivity.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 public class PromotionActivity {
     private PromotionStrategy promotionStrategy;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/PromotionStrategy.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 public interface PromotionStrategy {
     void doPromotion();

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/PromotionStrategyFactory.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 import java.util.HashMap;
 import java.util.Map;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/strategy/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.strategy;
+package com.baiye.design.pattern.behavioral.strategy;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/templatemethod/ACourse.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.templatemethod;
+package com.baiye.design.pattern.behavioral.templatemethod;
 
 public abstract class ACourse {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/templatemethod/DesignPatternCourse.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.templatemethod;
+package com.baiye.design.pattern.behavioral.templatemethod;
 
 public class DesignPatternCourse extends ACourse{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/templatemethod/FECourse.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.templatemethod;
+package com.baiye.design.pattern.behavioral.templatemethod;
 
 public class FECourse extends ACourse{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/templatemethod/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.templatemethod;
+package com.baiye.design.pattern.behavioral.templatemethod;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/visitor/CodingCourse.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.visitor;
+package com.baiye.design.pattern.behavioral.visitor;
 
 public class CodingCourse extends Course{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/visitor/Course.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.visitor;
+package com.baiye.design.pattern.behavioral.visitor;
 
 public abstract class Course {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/visitor/FreeCourse.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.visitor;
+package com.baiye.design.pattern.behavioral.visitor;
 
 public class FreeCourse extends Course{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/visitor/IVisitor.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.visitor;
+package com.baiye.design.pattern.behavioral.visitor;
 
 public interface IVisitor {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/visitor/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.visitor;
+package com.baiye.design.pattern.behavioral.visitor;
 
 import java.util.ArrayList;
 import java.util.List;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/behavioral/visitor/Visitor.java

@@ -1,4 +1,4 @@
-package com.baiye.design.behavioral.visitor;
+package com.baiye.design.pattern.behavioral.visitor;
 
 public class Visitor implements IVisitor{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/creational/singleton/lazy/LazyDoubleCheckSingleton.java

@@ -0,0 +1,34 @@
+package com.baiye.design.pattern.creational.singleton.lazy;
+
+public class LazyDoubleCheckSingleton {
+    // 使用 volatile 来防止指令重排序
+    private volatile static LazyDoubleCheckSingleton lazyDoubleCheckSingleton = null;
+
+    /**
+     * 私有构造器
+     */
+    private LazyDoubleCheckSingleton() {
+
+    }
+
+    /**
+     * 线程不安全 -> 加快锁
+     */
+    public static LazyDoubleCheckSingleton getInstance() {
+        if (null == lazyDoubleCheckSingleton) {
+            // 锁定的是单例的类
+            synchronized (LazyDoubleCheckSingleton.class) {
+                if (null == lazyDoubleCheckSingleton) {
+                    // 1. 分配内存给这个对象
+                    // 2. 初始化对象
+                    // 3. 设置 lazyDoubleCheckSingleton 指向刚分配的内存地址
+
+                    // fixme 在 2 3 时候可能被重排序 intra-thread semantics 的说明知道 2-3 互换位置不会改变程序的执行结果,允许重排序可以加快程序的执行性能
+                    lazyDoubleCheckSingleton = new LazyDoubleCheckSingleton();
+
+                }
+            }
+        }
+        return lazyDoubleCheckSingleton;
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/creational/singleton/lazy/LazySingleton.java

@@ -0,0 +1,27 @@
+package com.baiye.design.pattern.creational.singleton.lazy;
+
+/**
+ * 懒汉式单例模式
+ */
+public class LazySingleton {
+    private static LazySingleton lazySingleton = null;
+
+    /**
+     * 私有构造器
+     */
+    private LazySingleton() {
+
+    }
+
+    /**
+     * 线程不安全 -> 加快锁
+     */
+    public static LazySingleton getInstance() {
+        synchronized (LazySingleton.class){
+            if (null == lazySingleton) {
+                lazySingleton = new LazySingleton();
+            }
+        }
+        return lazySingleton;
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/creational/singleton/lazy/T.java

@@ -0,0 +1,9 @@
+package com.baiye.design.pattern.creational.singleton.lazy;
+
+public class T implements Runnable{
+    @Override
+    public void run() {
+        LazySingleton lazySingleton = LazySingleton.getInstance();
+        System.out.println(Thread.currentThread().getName() + " " + lazySingleton);
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/creational/singleton/lazy/Test.java

@@ -0,0 +1,12 @@
+package com.baiye.design.pattern.creational.singleton.lazy;
+
+public class Test {
+
+    public static void main(String[] args) {
+        Thread t1 = new Thread(new T());
+        Thread t2 = new Thread(new T());
+        t1.start();
+        t2.start();
+        System.out.println("program end");
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/clazzadapter/Adaptee.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.objectadapter;
+package com.baiye.design.pattern.structural.adapter.clazzadapter;
 
 public class Adaptee {
     public void adapteeRequest(){

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/clazzadapter/Adapter.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.clazzadapter;
+package com.baiye.design.pattern.structural.adapter.clazzadapter;
 
 /**
  * 适配器 把Adaptee的方法适配给Target接口

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/clazzadapter/ConcreteTarget.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.clazzadapter;
+package com.baiye.design.pattern.structural.adapter.clazzadapter;
 
 public class ConcreteTarget implements Target{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/clazzadapter/Target.java

@@ -0,0 +1,5 @@
+package com.baiye.design.pattern.structural.adapter.clazzadapter;
+
+public interface Target {
+    void request();
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/clazzadapter/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.clazzadapter;
+package com.baiye.design.pattern.structural.adapter.clazzadapter;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/objectadapter/Adaptee.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.clazzadapter;
+package com.baiye.design.pattern.structural.adapter.objectadapter;
 
 public class Adaptee {
     public void adapteeRequest(){

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/objectadapter/Adapter.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.objectadapter;
+package com.baiye.design.pattern.structural.adapter.objectadapter;
 
 public class Adapter implements Target{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/objectadapter/ConcreteTarget.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.objectadapter;
+package com.baiye.design.pattern.structural.adapter.objectadapter;
 
 
 public class ConcreteTarget implements Target{

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/objectadapter/Target.java

@@ -0,0 +1,5 @@
+package com.baiye.design.pattern.structural.adapter.objectadapter;
+
+public interface Target {
+    void request();
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/adapter/objectadapter/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.adapter.objectadapter;
+package com.baiye.design.pattern.structural.adapter.objectadapter;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/bridge/ABCBank.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.bridge;
+package com.baiye.design.pattern.structural.bridge;
 
 public class ABCBank extends Bank{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/bridge/Account.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.bridge;
+package com.baiye.design.pattern.structural.bridge;
 
 public interface Account {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/bridge/Bank.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.bridge;
+package com.baiye.design.pattern.structural.bridge;
 
 public abstract class Bank {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/bridge/DepositAccount.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.bridge;
+package com.baiye.design.pattern.structural.bridge;
 
 public class DepositAccount implements Account{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/bridge/ICBCBank.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.bridge;
+package com.baiye.design.pattern.structural.bridge;
 
 public class ICBCBank extends Bank{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/bridge/SavingAccount.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.bridge;
+package com.baiye.design.pattern.structural.bridge;
 
 public class SavingAccount implements Account{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/bridge/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.bridge;
+package com.baiye.design.pattern.structural.bridge;
 
 public class Test {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/composite/CatalogComponent.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.composite;
+package com.baiye.design.pattern.structural.composite;
 
 public abstract class CatalogComponent {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/composite/Course.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.composite;
+package com.baiye.design.pattern.structural.composite;
 
 public class Course extends CatalogComponent{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/composite/CourseCatalog.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.composite;
+package com.baiye.design.pattern.structural.composite;
 
 import java.util.ArrayList;
 import java.util.List;

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/composite/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.composite;
+package com.baiye.design.pattern.structural.composite;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v1/Battercake.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v1;
+package com.baiye.design.pattern.structural.decorator.v1;
 
 public class Battercake {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v1/BattercakeWithEgg.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v1;
+package com.baiye.design.pattern.structural.decorator.v1;
 
 public class BattercakeWithEgg extends Battercake{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v1/BattercakeWithEggSausage.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v1;
+package com.baiye.design.pattern.structural.decorator.v1;
 
 public class BattercakeWithEggSausage extends BattercakeWithEgg{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v1/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v1;
+package com.baiye.design.pattern.structural.decorator.v1;
 
 public class Test {
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v2/ABattercake.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v2;
+package com.baiye.design.pattern.structural.decorator.v2;
 
 public abstract class ABattercake {
     protected abstract String getDesc();

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v2/AbstractDecorator.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v2;
+package com.baiye.design.pattern.structural.decorator.v2;
 
 /**
  * @author Administrator

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v2/AbstractDecorator2.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v2;
+package com.baiye.design.pattern.structural.decorator.v2;
 
 /**
  * 装饰者类的第二种形式 对原装饰者进行修改,扩展到更多的方法

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v2/Battercake.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v2;
+package com.baiye.design.pattern.structural.decorator.v2;
 
 public class Battercake extends ABattercake{
     @Override

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v2/EggDecorator.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v2;
+package com.baiye.design.pattern.structural.decorator.v2;
 
 public class EggDecorator extends AbstractDecorator{
 

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v2/SausageDecorator.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v2;
+package com.baiye.design.pattern.structural.decorator.v2;
 
 public class SausageDecorator extends AbstractDecorator{
     public SausageDecorator(ABattercake aBattercake) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/decorator/v2/Test.java

@@ -1,4 +1,4 @@
-package com.baiye.design.structural.decorator.v2;
+package com.baiye.design.pattern.structural.decorator.v2;
 
 public class Test {
     public static void main(String[] args) {

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/facade/GiftExchangeService.java

@@ -0,0 +1,21 @@
+package com.baiye.design.pattern.structural.facade;
+
+public class GiftExchangeService {
+    // 注入子系统服务
+    private QualifyService qualifyService = new QualifyService();
+    private PointsPaymentService pointsPaymentService = new PointsPaymentService();
+    private ShippingService shippingService = new ShippingService();
+
+
+    public void giftExchange(PointsGift pointsGift) {
+        if (qualifyService.isAvailable(pointsGift)) {
+            // 资格校验通过
+            if (pointsPaymentService.pay(pointsGift)) {
+                // 如果支付积分成功
+                String shippingOrderNo = shippingService.shipGift(pointsGift);
+                System.out.println("物流系统下单成功,订单号是： " + shippingOrderNo);
+            }
+        }
+
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/facade/PointsGift.java

@@ -0,0 +1,13 @@
+package com.baiye.design.pattern.structural.facade;
+
+public class PointsGift {
+    private String name;
+
+    public PointsGift(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/facade/PointsPaymentService.java

@@ -0,0 +1,10 @@
+package com.baiye.design.pattern.structural.facade;
+
+public class PointsPaymentService {
+
+    public boolean pay(PointsGift pointsGift) {
+        // 扣减积分
+        System.out.println("支付" + pointsGift.getName() + "积分成功");
+        return true;
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/facade/QualifyService.java

@@ -0,0 +1,12 @@
+package com.baiye.design.pattern.structural.facade;
+
+/**
+ * 子系统
+ */
+public class QualifyService {
+
+    public boolean isAvailable(PointsGift pointsGift) {
+        System.out.println("校验" + pointsGift.getName() + "积分兑换资格通过,库存通过");
+        return true;
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/facade/ShippingService.java

@@ -0,0 +1,10 @@
+package com.baiye.design.pattern.structural.facade;
+
+public class ShippingService {
+    public String shipGift(PointsGift pointsGift) {
+        // 物流系统的对接逻辑
+        System.out.println(pointsGift.getName() + "进入物流系统");
+        String shippingOrderNo = "666";
+        return shippingOrderNo;
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/facade/Test.java

@@ -0,0 +1,14 @@
+package com.baiye.design.pattern.structural.facade;
+
+public class Test {
+    public static void main(String[] args) {
+        PointsGift t = new PointsGift("T");
+        GiftExchangeService giftExchangeService = new GiftExchangeService();
+
+//        giftExchangeService.setQualifyService(new QualifyService());
+//        giftExchangeService.setPointsPaymentService(new PointsPaymentService());
+//        giftExchangeService.setShippingService(new ShippingService());
+
+        giftExchangeService.giftExchange(t);
+    }
+}

dev-protocol-design-pattern/src/main/java/com/baiye/design/pattern/structural/flyweight/Employee.java

@@ -0,0 +1,5 @@
+package com.baiye.design.pattern.structural.flyweight;
+
+public interface Employee {
+    void reprot();
+}