目的：解析bean.xml文件，获取自动生成的对象并使用

测试类的写法及如何获取对象

public class testDemo {
    @Test
    public void testCollectionDemo1(){
        ApplicationContext context =
                new ClassPathXmlApplicationContext("bean7.xml");

        Book book1 = context.getBean("book",Book.class);
        Book book2 = context.getBean("book",Book.class);
        System.out.println(book1);
        System.out.println(book2);
    }

    @Test
    public void testCollectionDemo2(){
        ApplicationContext context =
                new ClassPathXmlApplicationContext("bean8.xml");

        Course course = context.getBean("MyBean",Course.class);
        System.out.println(course);
    }
}

使用@Test 标签需要引入Junit 4

优点：可以直接对该方法进行测试运行