spring context多次加载解决办法

spring context多次加载
最近想把权限的全部放在过滤器里先过滤，然后就用到了DelegatingFilterProxy，但是在配置的时候
日志里打印了
Root WebApplicationContext: initialization started
FrameworkServlet 'SpringServlet': initialization started
这两个东西，从而两次初始化了beans，是不是我的配置文件有重复，大伙儿帮忙看一下吧
web.xml如下

<servlet>
		<servlet-name>SpringServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>WEB-INF/applicationContext.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>SpringServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
<filter>
		<filter-name>DelegatingFilterProxy</filter-name>
		<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
		<init-param>
			<param-name>targetBeanName</param-name>
			<param-value>securityFilter</param-value>
		</init-param>
		<init-param>
			<param-name>targetFilterLifecycle</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>

	<filter-mapping>
		<filter-name></filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

spring里bean配置：

<bean id="securityFilter" class="net.thingswhisper.filter.SecurityFilter"></bean>

然后在工程启动的时候2次加载bean，是不是因为我在filter里声明了spring配置文件，然后spring servlet里也声明了的问题？
如何改这里？ 求赐教！
------解决思路----------------------
把 SpringMVC 的配置放到 classpath 下，名字也不要叫 applicationContext.xml