
import org.springframework.stereotype.component;
@component
public class employee implements person {
}

import org.springframework.stereotype.component;
@component
public class customer implements person {

import org.springframework.beans.factory.annotation.autowired;
public class organization {
@autowired
list<person> people;
public string tostring() {
return people.tostring();
}
此例中,organization中的people是无序的。多数情况下,在xml配置里,bean被有序添加到people list。这时srping 4.0提供了一个解决方案:使用@order。
@order注解在spring2.0时已经在spring框架里。它的主要作用是给组件排序。现在在spring4.0里,它也能给注入到有序的colletion的bean排序。@order接受一个排序值,值小的优先级高,也意味着在collection中排序靠前。上面的例子改写成:

import org.springframework.core.annotation.order;
@order(value=1)

@order(value=2)
public class customer implements person {
}