SpringMVC在Filter中使用spring注解无效

开发中遇到的问题，须要在filter中对requestURI作处理，须要用到自定义注解。

Filter的生命周期先于springMvcServlet建立因此无效

spring xml 中加入

<bean id="xxxFilter" class="xxx.xxxFilter" />

web.xml

<filter>
  <filter-name>DelegatingFilterProxy</filter-name>
  <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
  <async-supported>true</async-supported>
  <init-param>
    <param-name>targetBeanName</param-name>
    <param-value>xxxFilter</param-value>
  </init-param>
  <init-param>
    <param-name>targetFilterLifecycle</param-name>
    <param-value>true</param-value><!--保留init destroy方法-->
  </init-param>
</filter>
<filter-mapping>
  <filter-name>DelegatingFilterProxy</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>