Spring基础(3) : 静态工厂和实例工厂创建bean

public class Factory {

    public static Person staticCreate(){

        Person p = new Person();

        p.name="staticCreate";

        return p;

    }

    public Person instanceCreate(){

        Person p = new Person();

        p.name="instanceCreate";

        return p;

    }

}

  public static void main(String[] args){

        ApplicationContext context = new ClassPathXmlApplicationContext("a.xml");

        Person p1 = context.getBean("p1",Person.class);

        Person p2 =context.getBean("p2",Person.class);

        System.out.println(p1.getName()+" "+p2.getName());

    }



   配置：

    <bean id="p1" class="com.Factory" factory-method="staticCreate"/>

    <bean id="fac" class="com.Factory"/>

    <bean id="p2" factory-bean="fac" factory-method="instanceCreate"/>

通过工厂创建bean。

运行打印：

staticCreate instanceCreate

=========================================================================================================================================

注解方式：

@Configuration

public class Factory {

    @Bean("p1")

    public static Person staticCreate(){

        Person p = new Person();

        p.name="staticCreate";

        return p;

    }

    @Bean("p2")

    public Person instanceCreate(){

        Person p = new Person();

        p.name="instanceCreate";

        return p;

    }

}

 public static void main(String[] args){

        ApplicationContext context = new AnnotationConfigApplicationContext(Factory.class);

        Person p1 = context.getBean("p1",Person.class);

        Person p2 = context.getBean("p2",Person.class);

        System.out.println(p1.getName());

        System.out.println(p2.getName());

    }

输出：

staticCreate
instanceCreate