If you are doing all this in a JSF request (which I don't understand if you are) you can get the init-parameters with
<context-param>
<param-name>Premier</param-name>
<param-value>/Premier</param-value>
</context-param>
(note: not inside the servlet-tag)
and
final String PREMIER = FacesContext.getCurrentInstance().getExternalContext().getInitParameter("Premier");
This is just a comment as I don't know if it solves anything and/or there are other problems.