方法一 用name

xml（name可以用空格、逗号和分号分割）

  <bean id="apple" name="apple1 apple2,apple3;apple4" class="cn.sxt.bean.Apple">
        	<property name="color" value="red"></property>
  </bean>   

测试代码

ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");		
Apple hongFuShi = (Apple)context.getBean("apple");
System.out.println(hongFuShi);
Apple hongFuShi2 = (Apple)context.getBean("apple1");
System.out.println(hongFuShi2);
Apple hongFuShi3 = (Apple)context.getBean("apple2");
System.out.println(hongFuShi3.getColor());
Apple hongFuShi4 = (Apple)context.getBean("apple3");
System.out.println(hongFuShi4.getColor());
Apple hongFuShi5 = (Apple)context.getBean("apple4");
System.out.println(hongFuShi5.getColor());
Apple hongFuShi6 = (Apple)context.getBean("apple5");
System.out.println(hongFuShi6);

输出

cn.sxt.bean.Apple@7e0b0338
cn.sxt.bean.Apple@7e0b0338
red
red
red

由此可见都是单例，创造出来的都是一个对象

方法二 用alias标签

 <bean id="apple" class="cn.sxt.bean.Apple">
 	<property name="color" value="red"></property>
 </bean>
 <alias name="apple" alias="apple5"/>
       

Apple hongFuShi6 = (Apple)context.getBean("apple5");
System.out.println(hongFuShi6.getColor());

输出

red