设计模式-建造者模式

文章目录

1.传统方式完成盖房项目

1.需求说明

2.类图

3.目录结构

4.代码实现

1.AbstractHouse.java

java 复制代码

package com.sun.tradition;

/**
 * Description: 抽象的建造房屋的类
 * @Author sun
 * @Create 2024/5/28 21:12
 * @Version 1.0
 */
public abstract class AbstractHouse {

    // 打地基
    public abstract void buildBasic();
    // 砌墙
    public abstract void buildwalls();
    // 封顶
    public abstract void roofed();

    // 造房子
    public void build() {
        buildBasic();
        buildwalls();
        roofed();
    }
}

2.CommonHouse.java

java 复制代码

package com.sun.tradition;

/**
 * Description: 普通房子
 * @Author sun
 * @Create 2024/5/28 21:16
 * @Version 1.0
 */
public class CommonHouse extends AbstractHouse{
    @Override
    public void buildBasic() {
        System.out.println("普通房子打地基");
    }

    @Override
    public void buildwalls() {
        System.out.println("普通房子砌墙");
    }

    @Override
    public void roofed() {
        System.out.println("普通房子封顶");
    }
}

3.Client.java

java 复制代码

package com.sun.tradition;

/**
 * Description:
 * @Author sun
 * @Create 2024/5/28 21:17
 * @Version 1.0
 */
public class Client {
    public static void main(String[] args) {
        CommonHouse commonHouse = new CommonHouse();
        commonHouse.build();
    }
}

4.结果

5.优缺点分析

2.建造者模式

1.基本介绍

2.建造者模式的四个角色

3.类图

4.代码实现

1.House.java

java 复制代码

package com.sun.impove;

/**
 * Description: 产品
 * @Author sun
 * @Create 2024/5/29 19:47
 * @Version 1.0
 */
public class House {
    private String basic;
    private String wall;
    private String roofed;

    public String getBaise() {
        return basic;
    }

    public void setBaise(String basic) {
        this.basic = basic;
    }

    public String getWall() {
        return wall;
    }

    public void setWall(String wall) {
        this.wall = wall;
    }

    public String getRoofed() {
        return roofed;
    }

    public void setRoofed(String roofed) {
        this.roofed = roofed;
    }
}

2.HouseBuilder.java

java 复制代码

package com.sun.impove;

/**
 * Description: 抽象建造者
 * @Author sun
 * @Create 2024/5/29 19:48
 * @Version 1.0
 */
public abstract class HouseBuilder {
    // 组合一个产品
    protected House house = new House();

    // 对产品进行一定的操作
    // 打地基
    public abstract void buildBasic();
    // 砌墙
    public abstract void buildwalls();
    // 封顶
    public abstract void roofed();

    // 将建造之后的产品返回
    public House buildHouse() {
        return house;
    }
}

3.HighHouse.java

java 复制代码

package com.sun.impove;

/**
 * Description: 高房子
 * @Author sun
 * @Create 2024/5/29 20:01
 * @Version 1.0
 */
public class HighHouse extends HouseBuilder{
    @Override
    public void buildBasic() {
        System.out.println("高房子打地基");
    }

    @Override
    public void buildwalls() {
        System.out.println("高房子砌墙");
    }

    @Override
    public void roofed() {
        System.out.println("高房子封顶");
    }
}

4.CommonHouse.java

java 复制代码

package com.sun.impove;

/**
 * Description: 普通房子
 * @Author sun
 * @Create 2024/5/29 19:58
 * @Version 1.0
 */
public class CommonHouse extends HouseBuilder{
    @Override
    public void buildBasic() {
        System.out.println("普通房子打地基");
    }

    @Override
    public void buildwalls() {
        System.out.println("普通房子砌墙");
    }

    @Override
    public void roofed() {
        System.out.println("普通房子封顶");
    }
}

5.HouseDirector.java

java 复制代码

package com.sun.impove;

/**
 * Description: 指挥者
 * @Author sun
 * @Create 2024/5/29 20:04
 * @Version 1.0
 */
public class HouseDirector {
    // 聚合一个抽象建造者
    private HouseBuilder houseBuilder;

    // 通过构造器聚合
    public HouseDirector(HouseBuilder houseBuilder) {
        this.houseBuilder = houseBuilder;
    }

    // 或者通过setter方法聚合
    public void setHouseBuilder(HouseBuilder houseBuilder) {
        this.houseBuilder = houseBuilder;
    }

    // 通过抽象建造者指挥具体的建造流程
    public House constructHouse() {
        houseBuilder.buildwalls();
        houseBuilder.buildBasic();
        houseBuilder.roofed();
        // 建造完成后调用抽象建造者的构建房子方法，返回一个房子
        return houseBuilder.buildHouse();
    }
}

6.Client.java

java 复制代码

package com.sun.impove;

/**
 * Description:
 * @Author sun
 * @Create 2024/5/29 20:11
 * @Version 1.0
 */
public class Client {
    public static void main(String[] args) {
        // 让指挥者盖一个高房子
        HouseDirector houseDirector = new HouseDirector(new HighHouse());
        House house = houseDirector.constructHouse();
    }
}