Spring实例化对象方式②.静态工厂方法实例化：解决系统遗留问题(了解)

Employee2Factory.java：

package text.spring._05_instance.staticfactory;

/**
 * Created by Administrator on 2019/9/3.
 */
public class Employee2Factory {
    public static Employee2 getObject(){
        System.out.println("静态工厂实例化对象");
        return new Employee2();
    }
}

App.java：

package text.spring._05_instance.staticfactory;

import text.spring._05_instance.constructor.Employee;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * Created by Administrator on 2019/9/3.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
public class App {
    @Autowired
    private ApplicationContext context;

    @Test
    public void testOld(){
        Employee2 employee2 = Employee2Factory.getObject();
        System.out.println(employee2);
    }

    @Test
    public void testSpring() throws Exception {
        Employee2 employee2 = context.getBean(Employee2.class);
        System.out.println(employee2);
    }
}

App-context.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="employee2" class="text.spring._05_instance.staticfactory.Employee2Factory" factory-method="getObject">

    </bean>
</beans>