设计模式-抽象工厂模式

使用场景：需要初始化bean。bean有多个大分类，每个大分类下有多个小分类

1 创建大分类

public interface Super1 {

    void method();
}

public interface Super2 {

    void method();
}

2 创建每个大分类下的小分类

public class Son11 implements Super1{
    @Override
    public void method() {
        System.out.println("son11");
    }
}

public class Son12 implements Super1 {
    @Override
    public void method() {
        System.out.println("son12");
    }
}

public class Son21 implements Super2 {
    @Override
    public void method() {
        System.out.println("son21");
    }
}

public class Son22 implements Super2 {
    @Override
    public void method() {
        System.out.println("son22");
    }
}

3 创建抽象工厂类

public abstract class AbstractFactory {

    public abstract Super1 getSuper1(String super1);

    public abstract Super2 getSuper2(String super2);
}

4 创建每个大类的工厂类

public class Super1Factory extends AbstractFactory{

    @Override
    public Super1 getSuper1(String super1){
        if("son11".equals(super1)){
            return new Son11();
        }else if ("son12".equals(super1)){
            return new Son12();
        }

        return null;
    }

    @Override
    public Super2 getSuper2(String super2){
        return null;
    }
}

public class Super2Factory extends AbstractFactory {
    @Override
    public Super1 getSuper1(String super1) {
        return null;
    }

    @Override
    public Super2 getSuper2(String super2) {
        if ("son21".equals(super2)){
            return new Son21();
        }else if ("son22".equals(super2)){
            return new Son22();
        }
        return null;
    }
}

5 测试

public class Test {

    public static void main(String[] args) {
        //1 获得工厂类
        AbstractFactory factory = Factory.getFactory("super1");
        //2 获得bean
        Super1 son11 = factory.getSuper1("son11");
        son11.method();
    }
}