Spring MVC - Getting a hold of all endpoint patterns and converting them to regexps

gistfile1.txt

    @Override
    public void init(FilterConfig filterConfig) throws ServletException
    {
        List<String> urlPatterns = requestMappingHandlerMapping.getHandlerMethods().keySet().stream()
                .map(info -> info.getPatternsCondition().getPatterns().iterator().next())
                .filter(pattern -> pattern.contains("{"))
                .distinct()
                .collect(toList());
        endpoints = new Endpoint[urlPatterns.size()];
        for (int index = 0; index < urlPatterns.size(); index++)
        {
            String path = urlPatterns.get(index);
            String expression = path.replaceAll("\\{([a-zA-Z]+)\\}", "([^/]+)");
            System.out.println(path + "\t" + expression);
            endpoints[index] = new Endpoint(path, Pattern.compile(expression));
        }
    }