软件设计——抽象工厂模式之人与肤色

使用抽象工厂模式，完成下述产品等级结构：

1、类图

2、源代码

2.1  Man.java

package test4;
/*
 * 抽象产品类Man
 */
public interface Man {

	public void makeM();
	
}

2.2  WhiteMan.java

package test4;

public class WhiteMan implements Man {
	public void makeM() {
		System.out.println("我是白种男人！");
	}
	
}

2.3  YelloeMan.java

package test4;

public class YellowMan implements Man {
	public void makeM() {
		System.out.println("我是黄种男人！");
	}
	
}

2.4  BlackMan.java

package test4;

public class BlackMan implements Man {
	@Override
	public void makeM() {
		System.out.println("我是黑种男人！");
	}
	
}

2.5  Woman.java

package test4;
/*
 * 抽象产品类Woman
 */
public interface Woman {

	public void makeW();
}

2.6  WhiteWoman.java

package test4;

public class WhiteWoman implements Woman {
	@Override
	public void makeW() {
		System.out.println("我是白种女人！");
	}
	
}

2.7  YellowWoman.java

package test4;

public class YellowWoman implements Woman {
	public void makeW() {
		System.out.println("我是黄种女人！");
	}
	
}

2.8  BlackWoman.java

package test4;

public class BlackWoman implements Woman {
	@Override
	public void makeW() {
		System.out.println("我是黑种女人！");
	}
	
}

2.9  Color.java

package test4;
/*
 * 抽象工厂类 （肤色）
 */
public interface Color {
	
 public Man produceMan();
 public Woman produceWoman();
	
}

2.10  White.java

package test4;
/*
 * 具体工厂类 白色肤色
 */
public class White implements Color{
	@Override
	public Man produceMan() {
		return new WhiteMan();
	}
	@Override
	public Woman produceWoman() {
		return new WhiteWoman();
	}
}

2.11  Yellow.java

package test4;
/*
 * 具体工厂类 黄色肤色
 */
public class Yellow implements Color{
	@Override
	public Man produceMan() {
		return new YellowMan();
	}
	@Override
	public Woman produceWoman() {
		return new YellowWoman();
	}
}

2.12  Black.java

package test4;
/*
 * 具体工厂类 黑色肤色
 */
public class Black implements Color{
	@Override
	public Man produceMan() {
		return new BlackMan();
	}
	@Override
	public Woman produceWoman() {
		return new BlackWoman();
	}
}

2.13  XMLUtil.java

package test4;
/*
 * 读取XML文件并根据存储在XML文件中的类名获取对应的对象
 */

 import javax.xml.parsers.*;
 import org.w3c.dom.*;
 import java.io.File;
 public class XMLUtil {
     @SuppressWarnings("deprecation")
	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
                 Class c = Class.forName(cName);
                 Object obj = c.newInstance();
                 return obj;
         } catch (Exception e) {
             e.printStackTrace();
             return null;
         }
     }
 }

2.14  Client.java

package test4;
/*
 * 客户端测试类
 */
public class Client {
    public static void main(String[] args) {
    	try 
    	{
	        Color color;
	        Man man;
	        Woman woman;
	        color=(Color)XMLUtil.getBean();
	        System.out.println(color);
	        woman=color.produceWoman();
	        woman.makeW();
	        man=color.produceMan();
	        man.makeM();
	   }catch(Exception e){
		   System.out.print(e.getMessage());
	   }
	   
   }
}

2.15  config.xml

<?xml version="1.0" encoding="UTF-8"?>
 <config>
    <className>Black</className>
</config>

运行遇到错误：ClassNotFoundException

最终找到解决办法：修改XMLUtil . java，在两处加上具体路径，问题解决。