设计模式

heibaiying · heibaiying · commit a5a3821857be · 2019-12-06T17:53:21.000+08:00
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/Application.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/Application.java
@@ -0,0 +1,12 @@
+package com.heibaiying.behavioral.chain_of_responsibility;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+@Data
+@AllArgsConstructor
+public class Application {
+	private String title;
+	/*&#35831;&#20551;&#22825;&#25968;*/
+	private int dayNum;
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/DepartManager.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/DepartManager.java
@@ -0,0 +1,12 @@
+package com.heibaiying.behavioral.chain_of_responsibility;
+
+public class DepartManager extends Leader {
+
+	@Override
+	public void approval(Application application) {
+		System.out.println(application.getTitle() + "&#34987;&#37096;&#38376;&#32463;&#29702;&#23457;&#25209;&#36890;&#36807;");
+		if (application.getDayNum() >= 5) {
+			leader.approval(application);
+		}
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/GroupLeader.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/GroupLeader.java
@@ -0,0 +1,12 @@
+package com.heibaiying.behavioral.chain_of_responsibility;
+
+public class GroupLeader extends Leader {
+
+	@Override
+	public void approval(Application application) {
+		System.out.println(application.getTitle() + "&#34987;&#32452;&#38271;&#23457;&#25209;&#36890;&#36807;");
+		if (application.getDayNum() >= 3) {
+			leader.approval(application);
+		}
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/Leader.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/Leader.java
@@ -0,0 +1,14 @@
+package com.heibaiying.behavioral.chain_of_responsibility;
+
+public abstract class Leader {
+
+	protected Leader leader;
+
+	public Leader setNextLeader(Leader leader) {
+		this.leader = leader;
+		return leader;
+	}
+
+	public abstract void approval(Application application);
+
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/President.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/President.java
@@ -0,0 +1,9 @@
+package com.heibaiying.behavioral.chain_of_responsibility;
+
+public class President extends Leader {
+
+	@Override
+	public void approval(Application application) {
+		System.out.println(application.getTitle() + "&#34987;&#24635;&#32463;&#29702;&#23457;&#25209;&#36890;&#36807;");
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/ZTest.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/chain_of_responsibility/ZTest.java
@@ -0,0 +1,12 @@
+package com.heibaiying.behavioral.chain_of_responsibility;
+
+public class ZTest {
+	public static void main(String[] args) {
+		GroupLeader groupLeader = new GroupLeader();
+		DepartManager departManager = new DepartManager();
+		President president = new President();
+		groupLeader.setNextLeader(departManager).setNextLeader(president);
+		groupLeader.approval(new Application("&#20107;&#20551;&#21333;", 3));
+		groupLeader.approval(new Application("&#23130;&#20551;&#21333;", 10));
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/Command.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/Command.java
@@ -0,0 +1,5 @@
+package com.heibaiying.behavioral.command;
+
+public interface Command {
+	void execute();
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/Manager.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/Manager.java
@@ -0,0 +1,20 @@
+package com.heibaiying.behavioral.command;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Manager {
+
+	private List<Command> commandList = new ArrayList<>();
+
+	public void addCommand(Command command) {
+		commandList.add(command);
+	}
+
+	public void executeCommands() {
+		for (Command command : commandList) {
+			command.execute();
+		}
+		commandList.clear();
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/MuteCommand.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/MuteCommand.java
@@ -0,0 +1,16 @@
+package com.heibaiying.behavioral.command;
+
+public class MuteCommand implements Command {
+
+	private Player player;
+
+	public MuteCommand(Player player) {
+		this.player = player;
+	}
+
+
+	@Override
+	public void execute() {
+		player.mute();
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/PauseCommand.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/PauseCommand.java
@@ -0,0 +1,16 @@
+package com.heibaiying.behavioral.command;
+
+public class PauseCommand implements Command {
+
+	private Player player;
+
+	public PauseCommand(Player player) {
+		this.player = player;
+	}
+
+
+	@Override
+	public void execute() {
+		player.pause();
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/PlayCommand.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/PlayCommand.java
@@ -0,0 +1,16 @@
+package com.heibaiying.behavioral.command;
+
+public class PlayCommand implements Command {
+
+	private Player player;
+
+	public PlayCommand(Player player) {
+		this.player = player;
+	}
+
+
+	@Override
+	public void execute() {
+		player.play();
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/Player.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/Player.java
@@ -0,0 +1,23 @@
+package com.heibaiying.behavioral.command;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+@Data
+@AllArgsConstructor
+public class Player {
+
+	private String name;
+
+	public void play() {
+		System.out.println(name + "&#25773;&#25918;");
+	}
+
+	public void pause() {
+		System.out.println(name + "&#26242;&#20572;");
+	}
+
+	public void mute() {
+		System.out.println(name + "&#38745;&#38899;");
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/ZTest.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/command/ZTest.java
@@ -0,0 +1,14 @@
+package com.heibaiying.behavioral.command;
+
+public class ZTest {
+	public static void main(String[] args) {
+		Manager manager = new Manager();
+		Player player01 = new Player("&#25773;&#25918;&#22120;&#19968;");
+		Player player02 = new Player("&#25773;&#25918;&#22120;&#20108;");
+		manager.addCommand(new PlayCommand(player01));
+		manager.addCommand(new PauseCommand(player01));
+		manager.addCommand(new PlayCommand(player02));
+		manager.addCommand(new MuteCommand(player02));
+		manager.executeCommands();
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/interpreter/ZTest.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/interpreter/ZTest.java
@@ -23,7 +23,7 @@ public static String getExpStr() throws IOException {
 
 	//&#33719;&#24471;&#20540;&#26144;&#23556;
 	public static HashMap<String, Integer> getValue(String exprStr) throws IOException {
-		HashMap<String, Integer> map = new HashMap<String, Integer>();
+		HashMap<String, Integer> map = new HashMap<>();
 		//&#35299;&#26512;&#26377;&#20960;&#20010;&#21442;&#25968;&#35201;&#20256;&#36882;
 		for (char ch : exprStr.toCharArray()) {
 			if (ch != '+' && ch != '-') {
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/HouseMediator.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/HouseMediator.java
@@ -0,0 +1,29 @@
+package com.heibaiying.behavioral.mediator;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class HouseMediator extends Mediator {
+
+	private List<Person> personList = new ArrayList<>();
+
+	@Override
+	public void register(Person person) {
+		if (!personList.contains(person)) {
+			personList.add(person);
+			person.setMediator(this);
+		}
+	}
+
+	@Override
+	public void send(String from, String message) {
+		System.out.println(from + "&#21457;&#36865;&#28040;&#24687;&#65306;" + message);
+		for (Person person : personList) {
+			String name = person.getName();
+			if (!name.equals(from)) {
+				person.receive(message);
+			}
+		}
+	}
+}
+
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/Mediator.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/Mediator.java
@@ -0,0 +1,8 @@
+package com.heibaiying.behavioral.mediator;
+
+abstract class Mediator {
+
+	public abstract void register(Person person);
+
+	public abstract void send(String from, String message);
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/Person.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/Person.java
@@ -0,0 +1,22 @@
+package com.heibaiying.behavioral.mediator;
+
+import lombok.Data;
+
+@Data
+public class Person {
+
+	private String name;
+	private Mediator mediator;
+
+	public Person(String name) {
+		this.name = name;
+	}
+
+	public void send(String message) {
+		mediator.send(this.name, message);
+	}
+
+	public void receive(String message) {
+		System.out.println(name + "&#25910;&#21040;&#28040;&#24687;&#65306;" + message);
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/ZTest.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/mediator/ZTest.java
@@ -0,0 +1,14 @@
+package com.heibaiying.behavioral.mediator;
+
+public class ZTest {
+	public static void main(String[] args) {
+		HouseMediator houseMediator = new HouseMediator();
+		Person seller = new Person("&#21334;&#26041;");
+		Person buyer = new Person("&#20080;&#26041;");
+		houseMediator.register(seller);
+		houseMediator.register(buyer);
+		buyer.send("&#20215;&#26684;&#22810;&#23569;");
+		seller.send("10&#19975;");
+		buyer.send("&#22826;&#36149;&#20102;");
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/Article.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/Article.java
@@ -0,0 +1,11 @@
+package com.heibaiying.behavioral.memento;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+@Data
+@AllArgsConstructor
+public class Article {
+	private String title;
+	private String content;
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/GitRepository.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/GitRepository.java
@@ -0,0 +1,23 @@
+package com.heibaiying.behavioral.memento;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class GitRepository {
+
+	private List<Memorandum> repository = new ArrayList<>();
+
+	public void save(Article article) {
+		Memorandum memorandum = new Memorandum(article);
+		repository.add(memorandum);
+	}
+
+	public Article get(int version) {
+		Memorandum memorandum = repository.get(version);
+		return memorandum.toArticle();
+	}
+
+	public Article back() {
+		return repository.get(repository.size() - 1).toArticle();
+	}
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/Memorandum.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/Memorandum.java
@@ -0,0 +1,21 @@
+package com.heibaiying.behavioral.memento;
+
+import java.util.Date;
+
+public class Memorandum {
+
+	private String title;
+	private String content;
+	private Date createTime;
+
+	public Memorandum(Article article) {
+		this.title = article.getTitle();
+		this.content = article.getContent();
+		this.createTime = new Date();
+	}
+
+	public Article toArticle() {
+		return new Article(this.title, this.content);
+	}
+
+}
diff --git a/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/ZTest.java b/code/Java/design-pattern/src/main/java/com/heibaiying/behavioral/memento/ZTest.java
@@ -0,0 +1,15 @@
+package com.heibaiying.behavioral.memento;
+
+public class ZTest {
+	public static void main(String[] args) {
+		GitRepository repository = new GitRepository();
+		Article article = new Article("Java&#25163;&#20876;", "&#29256;&#26412;&#19968;");
+		repository.save(article);
+		article.setContent("&#29256;&#26412;&#20108;");
+		repository.save(article);
+		article.setContent("&#29256;&#26412;&#19977;");
+		repository.save(article);
+		System.out.println(repository.back());
+		System.out.println(repository.get(0));
+	}
+}
