spring的配置中有些配置没有id或者name属性，spring是如何注入的？

spring的配置中有些配置没有id或者name属性，spring是如何注入的？

如下配置：这些配置都只有class属性，没有id属性，不是说DI都是根据id或者name来注入相应的对象的吗？而如下配置完全没有id属性，我想知道spring如何完成注入的？

<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" p:order="1">
    <property name="interceptors" ref="localeChangeInterceptor" />
</bean>
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" p:order="2">
    <property name="interceptors" ref="localeChangeInterceptor" />
</bean>
<!--
    - This bean resolves specific types of exceptions to corresponding logical - view names for error views. The default
    behaviour of DispatcherServlet - is to propagate all exceptions to the servlet container: this will happen - here with
    all other types of exceptions.
-->
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
    <!--property name="defaultErrorView" value="uncaughtExceptionView"/-->
    <property name="exceptionMappings">
        <props>
            <prop key="org.springframework.dao.DataAccessException">dataAccessFailureView</prop>
            <prop key="org.springframework.transaction.TransactionException">dataAccessFailureView</prop>
        </props>
    </property>
</bean>