@PathVariable in SpringBoot with slashes in URL

This code gets the complete path:

@RequestMapping(value = "/modules/{moduleBaseName}/**", method = RequestMethod.GET)
@ResponseBody
public String moduleStrings(@PathVariable String moduleBaseName, HttpServletRequest request) {
    final String path =
            request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE).toString();
    final String bestMatchingPattern =
            request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE).toString();

    String arguments = new AntPathMatcher().extractPathWithinPattern(bestMatchingPattern, path);

    String moduleName;
    if (null != arguments && !arguments.isEmpty()) {
        moduleName = moduleBaseName + '/' + arguments;
    } else {
        moduleName = moduleBaseName;
    }

    return "module name is: " + moduleName;
}

import org.springframework.web.util.UriUtils;

@RequestMapping(value = "/modules/**", method = RequestMethod.GET)
@ResponseBody
public String moduleStrings(HttpServletRequest request) {
    final String url = request.getRequestURL().toString();
    final String modules = url.split("/modules")[1];
    final String safeModules = UriUtils.decode(modules, StandardCharsets.UTF_8);
        
    return "replaces %20 with space";
}

Basing on P.J.Meisch's answer I have come to the simple solution for my case. Also it allows to take into account several slashes in the URL param. It doesn't allow to work with backslashes as in the previous answer too.

@RequestMapping(value = "/modules/**", method = RequestMethod.GET)
@ResponseBody
public String moduleStrings(HttpServletRequest request) {

    String requestURL = request.getRequestURL().toString();

    String moduleName = requestURL.split("/modules/")[1];

    return "module name is: " + moduleName;

}