spring使用工厂模型获取实例化

创建一个Child类继承Wife，不写任何内容：

package entity;

public class Child extends Person{
}

 然后在Wife类中添加静态方法：

/**
     * 静态工厂方法
     * @return
     */
    public static Wife createChild(){
        Child child = new Child();
        child.setName("儿子");
        return child;
    }

然后xml配置：

 

 测试方法：

@Test
    public void fun3(){
        System.out.println("begin!");
        Wife wife = app.getBean("wife", Wife.class);
        System.out.println(wife);
    }

输出结果：

 

 

 

下面是非静态方法：

测试方法：

/**
     * 非静态工厂
     */
    @Test
    public void fun4(){
        System.out.println("begin!");
        Wife wife = app.getBean("wife", Wife.class);
        System.out.println(wife);
    }

新建一个工厂类：

package entity;

public class WifeFactory {
    public Wife createChild(){
        Child child = new Child();
        child.setName("儿子");
        return child;
    }
}

xml配置

 

 运行结果：