spring注解整合dwr的一个小问题?报错

这是文件头

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
       http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd
       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

<dwr:annotation-scan base-package="cn.com.blossomframework.services" scanDataTransferObject="true" scanRemoteProxy="true"/>

这一行配置报错，原因是找不到，我看官方例子也是这么写的我看网上有的例子有

xmlns:dwra="http://www.directwebremoting.org/schema/spring-dwr-annotations"

http://www.directwebremoting.org/schema/spring-dwr-annotations    
http://www.directwebremoting.org/schema/spring-dwr-annotations.xsd

这几行在文件头里，但是官网貌似已经不提供这种方式了，有人碰到过这种情况吗？