java设计模式之抽象工厂模式

抽象工厂包含的角色：

1、抽象工厂（AbstractFactory）

2、具体工厂（ConcreteFactory）

3、抽象产品（AbstractProduct）

4、具体产品（Product）

//抽象产品类
public interface Television {
	public void play();
	
}

//具体产品类
public class HaierTelevision implements Television {

	@Override
	public void play() {
		System.out.println("海尔电视机播放中。。。。。。");
		
	}

}

//具体产品类
public class TCLTelevision implements Television{

	@Override
	public void play() {
		// TODO Auto-generated method stub
		System.out.println("TCL电视机播放中。。。。。");
		
	}

}

//抽象产品类
public interface AirConditioner {

	public void changTemperature();
}

//具体产品类
public class HaierAirConditioner implements AirConditioner{

	@Override
	public void changTemperature() {
		// TODO Auto-generated method stub
		System.out.println("海尔空调温度改变中。。。。。。。。");
		
	}

}

//具体产品类
public class TCLAirConditioner implements AirConditioner{

	@Override
	public void changTemperature() {
		// TODO Auto-generated method stub
		System.out.println("TCL空调温度改变中。。。。。。。");
		
	}

}

//抽象工厂类（电器工厂类）
public interface EFactory {

	public Television producedTelevision();
	public AirConditioner producedAirConditioner();
}

//具体工厂类（海尔工厂类）
public class HaierFactory implements EFactory{

	@Override
	public Television producedTelevision() {
		
		return new HaierTelevision();
	}

	@Override
	public AirConditioner producedAirConditioner() {
		return new HaierAirConditioner();
	}

}

//具体工厂类（TCL工厂类）
public class TCLFactory implements EFactory{

	@Override
	public Television producedTelevision() {
		// TODO Auto-generated method stub
		return new TCLTelevision();
	}

	@Override
	public AirConditioner producedAirConditioner() {
		// TODO Auto-generated method stub
		return new TCLAirConditioner();
	}

}

import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;


public class XMLUtil {//XML操作工具类
	public static Object getBean(){
		
		try {
			//创建文档对象
			DocumentBuilderFactory dFactory=DocumentBuilderFactory.newInstance();
			DocumentBuilder dBuilder=dFactory.newDocumentBuilder();
			Document doc;
			doc=dBuilder.parse(new File("configTV.xml"));
			
			//获取包含品牌名称的文本节点
			NodeList nl=doc.getElementsByTagName("className");
			Node classNode = nl.item(0).getFirstChild();
			String cName=classNode.getNodeValue().trim();
			
			//通过类名生成实例对象将其返回
		    Class c=Class.forName(cName);
		    Object obj=c.newInstance();
		    return obj;
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
			return null;
		}
	}
}

public class Client {
	
	public static void main(String[] args) {
		try {
			//抽象工厂类（电器工厂类）
			EFactory factory;
			//抽象产品
			Television tv;
			AirConditioner ac;
			//获得具体产品对应的具体工厂类
			factory =(EFactory)XMLUtil.getBean();
			tv=factory.producedTelevision();
			tv.play();
			ac=factory.producedAirConditioner();
			ac.changTemperature();
		} catch (Exception e) {
			// TODO: handle exception
		}
	}

}

<?xml version = "1.0"?>
<config>
	<className>HaierFactory</className>
</config>