exclude pattern with spring interceptor

I am using a spring interceptor and I want to exclude only the first page in my application. The first page serves to authenticate then redirects towards other pages.

so I wrote in my config file

<mvc:interceptors>
    <mvc:interceptor>
    <mvc:exclude-mapping path="/" />
    <bean class="com.app.interceptor.AuthentificationInterceptor">
    </bean>
   </mvc:interceptor>
</mvc:interceptors> 

But I got an error in the deployement. Where did I go wrong ?