@WebFilter("/*")
................
public class UserFilter implements Filter {
  @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
.............
HttpServletRequest request = ((HttpServletRequest) req);
                String d = request.getParameter("myfile");// правильно принимает имя файла
                if (d != null && d.length() > 0) {
                    Collection<Part> parts;
                    parts = request.getParts();  //<--------------org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/mo] threw exception
                                                 // java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided
                }
                chain.doFilter(req, resp);

...............
   }
}