srping mvc filter注入問題

想在filter中使用依賴注入的對象，配置以下： web.xml中

<filter>
		<filter-name>sessionFilter</filter-name>
		<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
		
	</filter>
	<filter-mapping>  
	    <filter-name>sessionFilter</filter-name>  
	    <url-pattern>/*</url-pattern>  
	</filter-mapping>

spring 配置文件中

<bean id="sessionFilter" class="com.eccl.SessionFilter">  </bean>

filter文件

public class SessionFilter implements Filter{
	@Resource
	private SysUserService sysUserService;
	@Resource
	private SessionAuthenticationStrategy sessionStrategy = new NullAuthenticatedSessionStrategy();
	
	@Override
	public void destroy() {
		
	}

	@Override
	public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
			throws IOException, ServletException {
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		
	}

}