Spring error including static resources

Question

I have an error including static resources in my spring mvc project.
My css is in /webapp/resources/css.

I have the following lines in my spring dispatcher servlet:

<mvc:resources mapping="/webjars/**" location="classpath:/META-INF/resources/webjars/"/>
<mvc:resources mapping="/resources/**" location="/resources/" />

I include it in my jsp file like this:

<link href="<c:url value="/resources/css/mycompany.css" />" rel="stylesheet">

The problem is that it's working only if my URL is like:
http://localhost:8080/MyProject/firstLevel

But if my URL is like this it's not working:
http://localhost:8080/MyProject/firstLevel/secondLevel

If I open the console I can see an error:

"Failed to load resource: the server responded with a status of 404"

in http://localhost:8080/MyProject/firstLevel/webjars/jquery/2.1.4/jquery.min.js

Because I think it has to find it in:
http://localhost:8080/MyProject/webjars/jquery/2.1.4/jquery.min.js

Does anyone know how to solve this issue?
(I can upload some other files if needed)

Thank you