Forward Request for Angular 2x

Forward.java

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class Forward extends OncePerRequestFilter {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Override
    public void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
            throws IOException, ServletException {

        String uri = request.getRequestURI();
        String contextPath = request.getContextPath();

        if (!uri.startsWith(contextPath + "/api") &&
                !uri.startsWith(contextPath + "/assets") &&
                !uri.equals(contextPath) &&
                // only forward if there's no file extension (exclude *.js, *.css etc)
                uri.matches("^([^.]+)$")) {

            logger.debug("Forward Request filter '{}'", request.getRequestURL());

            RequestDispatcher dispatcher = request.getRequestDispatcher("/");
            dispatcher.forward(request, response);
            return;
        }

        chain.doFilter(request, response);
    }
}