<!-- 定义上下文返回的消息的国际化 --> 
<bean id="messageSource" 
  class="org.springframework.context.support.ReloadableResourceBundleMessageSource"> 
  <property name="basename" 
    value="classpath:config/messages_zh_CN"/> 
</bean> 

@Autowired 
private MessageSource messageSource; 

getMessage("UserDetails.isLocked",null,null) //用户已被锁定
getMessage("UserDetails.isLocked",new Object[]{“admin”},null) //用户admin不存在

<!-- 启用用户的缓存功能 --> 
<bean id="userCache" 
  class="org.springframework.security.core.userdetails.cache.EhCacheBasedUserCache"> 
  <property name="cache" ref="userEhCache" /> 
</bean> 
<bean id="userEhCache" class="org.springframework.cache.ehcache.EhCacheFactoryBean"> 
  <property name="cacheName" value="userCache" /> 
  <property name="cacheManager" ref="cacheManager" /> 
</bean>  
<bean id="cacheManager" 
class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean" /> 

<cache 
  name="userCache" 
  maxElementsInMemory="100" 
  eternal="false" 
  timeToIdleSeconds="600" 
  timeToLiveSeconds="3600" 
  overflowToDisk="true" 
/> 
注入ecache
@Autowired 
private UserCache userCache; 

this.userCache.getUserFromCache(username);获取到缓存中的用户对象