坦克大战（一期）-设计模式-Visitor访问者模式1.0

src/main/java/com/msb/visitor/Board.java

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+package com.msb.visitor;/**
+ * @Author bingor
+ * @Date 2022/10/17 19:42
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Board
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/17 19:42
+ *@Version 3.0
+ */
+public class Board extends ComputerPart {
+    @Override
+    public void accept(Visitor visitor) {
+        visitor.visitBoard(this);
+    }
+
+    @Override
+    public double getPrice() {
+        return 800;
+    }
+}

src/main/java/com/msb/visitor/CompanyVisitor.java

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+package com.msb.visitor;/**
+ * @Author bingor
+ * @Date 2022/10/17 19:44
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName CompanyVisitor
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/17 19:44
+ *@Version 3.0
+ */
+public class CompanyVisitor implements Visitor {
+
+    double totalPrice = 0.0;
+
+    @Override
+    public void visitCpu(Cpu cpu) {
+        this.totalPrice += cpu.getPrice() * 0.7;
+    }
+
+    @Override
+    public void visitMemory(Memory memory) {
+        this.totalPrice += memory.getPrice() * 0.8;
+    }
+
+    @Override
+    public void visitBoard(Board board) {
+        this.totalPrice += board.getPrice() * 0.7;
+    }
+
+    @Override
+    public double getTotalPrice() {
+        return totalPrice;
+    }
+}

src/main/java/com/msb/visitor/Computer.java

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+package com.msb.visitor;/**
+ * @Author bingor
+ * @Date 2022/10/17 19:48
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Computer
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/17 19:48
+ *@Version 3.0
+ */
+public class Computer {
+    private Cpu cpu;
+    private Memory memory;
+    private Board board;
+
+    public Computer(Cpu cpu, Memory memory, Board board) {
+        this.cpu = cpu;
+        this.memory = memory;
+        this.board = board;
+    }
+
+    public void accept(Visitor visitor) {
+        this.cpu.accept(visitor);
+        this.board.accept(visitor);
+        this.memory.accept(visitor);
+    }
+
+    public static void main(String[] args) {
+
+        Computer computer = new Computer(new Cpu(), new Memory(), new Board());
+
+        Visitor personelVisitor = new PersonelVisitor();
+        computer.accept(personelVisitor);
+        System.out.println(personelVisitor.getTotalPrice());
+
+        Visitor companyVisitor = new CompanyVisitor();
+        computer.accept(companyVisitor);
+        System.out.println(companyVisitor.getTotalPrice());
+
+    }
+
+}

src/main/java/com/msb/visitor/ComputerPart.java

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+package com.msb.visitor;/**
+ * @Author bingor
+ * @Date 2022/10/17 19:38
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName ComputerPart
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/17 19:38
+ *@Version 3.0
+ */
+public abstract class ComputerPart {
+    public abstract void accept(Visitor visitor);
+    public abstract double getPrice();
+}

src/main/java/com/msb/visitor/Cpu.java

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+package com.msb.visitor;/**
+ * @Author bingor
+ * @Date 2022/10/17 19:40
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Cpu
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/17 19:40
+ *@Version 3.0
+ */
+public class Cpu extends ComputerPart {
+
+    @Override
+    public void accept(Visitor visitor) {
+        visitor.visitCpu(this);
+    }
+
+    @Override
+    public double getPrice() {
+        return 1000;
+    }
+}

src/main/java/com/msb/visitor/Memory.java

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+package com.msb.visitor;/**
+ * @Author bingor
+ * @Date 2022/10/17 19:42
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+
+/**
+ *@ClassName Memory
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/17 19:42
+ *@Version 3.0
+ */
+public class Memory extends ComputerPart {
+    @Override
+    public void accept(Visitor visitor) {
+        visitor.visitMemory(this);
+    }
+
+    @Override
+    public double getPrice() {
+        return 900;
+    }
+}

src/main/java/com/msb/visitor/PersonelVisitor.java

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+package com.msb.visitor;/**
+ * @Author bingor
+ * @Date 2022/10/17 19:43
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+
+import org.omg.IOP.TAG_ORB_TYPE;
+
+/**
+ *@ClassName PersonelVisitor
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/17 19:43
+ *@Version 3.0
+ */
+public class PersonelVisitor implements Visitor {
+
+    double totalPrice = 0.0;
+
+    @Override
+    public void visitCpu(Cpu cpu) {
+        this.totalPrice += cpu.getPrice() * 0.8;
+    }
+
+    @Override
+    public void visitMemory(Memory memory) {
+        this.totalPrice += memory.getPrice() * 0.9;
+    }
+
+    @Override
+    public void visitBoard(Board board) {
+        this.totalPrice += board.getPrice() * 0.8;
+    }
+
+    @Override
+    public double getTotalPrice() {
+        return totalPrice;
+    }
+}

src/main/java/com/msb/visitor/Visitor.java

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+package com.msb.visitor;
+
+/**
+ * @Author bingor
+ * @Date 2022/10/17 19:39
+ * @Description: com.msb.visitor
+ * @Version: 1.0
+ */
+public interface Visitor {
+    public void visitCpu(Cpu cpu);
+    public void visitMemory(Memory memory);
+    public void visitBoard(Board board);
+    public double getTotalPrice();
+}