2024/11/10

实验4：抽象工厂模式

本次实验属于模仿型实验，通过本次实验学生将掌握以下内容：

1、理解抽象工厂模式的动机，掌握该模式的结构；

2、能够利用抽象工厂模式解决实际问题。

 

[实验任务一]：人与肤色

使用抽象工厂模式，完成下述产品等级结构：

 

实验要求：

1.  画出对应的类图；

 

2.  提交源代码；

Black.java

package com.a004;

 

public class Black implements Color{

    @Override

    public Man produceMan() {

        return new BlackMan();

    }

 

    @Override

    public Woman produceWoman() {

        return new BlackWoman();

    }

}

BlackMan.java

package com.a004;

 

public class BlackMan implements Man{

    @Override

    public void play(){

        System.out.println("我是黑种男人！");

    }

}

BlackWoman.java

package com.a004;

 

public class BlackWoman implements Woman {

 

    @Override

    public void play() {

        System.out.println("我是黑种女人！");

    }

}

Color.java

package com.a004;

 

public interface Color {

    public Man produceMan();

    public Woman produceWoman();

}

Yellow.java

package com.a004;

 

public class Yellow implements Color{

    @Override

    public Man produceMan() {

        return new YellowMan();

    }

 

    @Override

    public Woman produceWoman() {

        return new YellowWoman();

    }

}

White.java

package com.a004;

 

public class White implements Color {

    @Override

    public Man produceMan() {

        return new WhiteMan();

    }

 

    @Override

    public Woman produceWoman() {

        return new WhiteWoman();

    }

}

Man.java

1 package com.a004;

2

3 public interface Man {

4     public void play();

5 }

WhiteMan.java

package com.a004;

 

public class WhiteMan implements Man {

    @Override

    public void play() {

        System.out.println("我是白种男人！");

    }

}

YellowMan.java

package com.a004;

 

public class YellowMan implements Man{

    @Override

    public void play() {

        System.out.println("我是黄种男人！");

    }

}

Woman.java

package com.a004;

 

public interface Woman {

 

    public void play() ;

}

WhiteWoman.java

package com.a004;

 

public class WhiteWoman implements Woman {

    @Override

    public void play() {

        System.out.println("我是白种女人！");

    }

}

YellowWoman.java

package com.a004;

 

public class YellowWoman implements Woman {

    @Override

    public void play() {

        System.out.println("我是黄种女人！");

    }

}

XMLUtil.java

package com.a004;

import javax.xml.parsers.*;

import org.w3c.dom.*;

import org.xml.sax.SAXException;

import java.io.File;

public class XMLUtil {

    public static Object getBean() {

        try {

                //创建DOM文档对象

                DocumentBuilderFactory dFactory = DocumentBuilderFactory.newInstance();

                DocumentBuilder builder = dFactory.newDocumentBuilder();

                Document doc;

                doc = builder.parse(new File("config.xml"));

                //获取包含类名的文本节点

                NodeList nl = doc.getElementsByTagName("className");

                Node classNode = nl.item(0).getFirstChild();

                String cName = classNode.getNodeValue();

                System.out.println("类名:  "+ cName); //输出类名

                //通过类名生成实例对象返回

 

            Object obj = null;

            try {

                Class c =Class.forName("com.a004."+cName);

                obj = c.newInstance();

            } catch (ClassNotFoundException e) {

                System.out.println("ClassNotFoundException");

                e.printStackTrace();

            } catch (InstantiationException e) {

                System.out.println("InstantiationException");

                e.printStackTrace();

            } catch (IllegalAccessException e) {

                System.out.println("IllegalAccessException");

                e.printStackTrace();

            }

            return obj;

        } catch (Exception e) {

            e.printStackTrace();

            return null;

        }

    }

}

config.xml

1 <?xml version = "1.0"?>

2 <config>

3     <className>Black</className>

4 </config>

Client.java

package com.a004;

public class Client {

    public static void main(String[] args) {

        Color color;

        Man man;

        Woman woman;

        color=(Color) XMLUtil.getBean();

//        color=new White();

        woman=color.produceWoman();

        woman.play();

        man=color.produceMan();

        man.play();

    }

}

3.注意编程规范。