Java Code Examples for org.springframework.web.servlet.support.ServletUriComponentsBuilder#fromCurrentRequest()

Object fixLink(Object value) {
    if (!(value instanceof String)) {
        return value;
    }
    String href = (String) value;
    Matcher urlWithServiceNameMatcher = urlWithServiceNamePattern.matcher(href);
    Matcher standardUrlMatcher = standardUrlPattern.matcher(href);
    if (!standardUrlMatcher.matches() && urlWithServiceNameMatcher.matches()) {
        String possibleServiceName = urlWithServiceNameMatcher.group(1);
        log.debug("Possible service name: " + possibleServiceName);
        if (services.contains(possibleServiceName)) {
            log.debug("Service found");
            String gatewayPath = serviceRouteMapper.apply(possibleServiceName);
            String originalRestPath = urlWithServiceNameMatcher.group(2);
            ServletUriComponentsBuilder servletUriComponentsBuilder = ServletUriComponentsBuilder.fromCurrentRequest();
            UriComponents uriComponents = servletUriComponentsBuilder.replacePath(gatewayPath).path(originalRestPath).build();
            log.debug("Mapping " + value + " to " +  uriComponents);
            return uriComponents.toString();
        }
    }
    return href;
}
 

/**
 * Build a downLoadUrl for the file identified by the given fileId. If this method is called
 * outside of a request context ( system initialization for example) the server context is used
 * for generating a relative path
 */
private String buildFileUrl(String fileId) {

  if (RequestContextHolder.getRequestAttributes() != null) {
    ServletUriComponentsBuilder currentRequest = ServletUriComponentsBuilder.fromCurrentRequest();
    UriComponents downloadUri =
        currentRequest
            .replacePath(FileDownloadController.URI + '/' + fileId)
            .replaceQuery(null)
            .build();
    return downloadUri.toUriString();
  } else {
    // TODO this is a workaround for the situation where the File url needs to be created without
    // a request
    // context, in order to fix the properly we would need to add a deploy time property
    // defining the file download server location
    return FileDownloadController.URI + '/' + fileId;
  }
}
 

@RequestMapping(value = "/", method = RequestMethod.GET)
String index(Model model, //
		@QuerydslPredicate(root = User.class) Predicate predicate, //
		@PageableDefault(sort = { "lastname", "firstname" }) Pageable pageable, //
		@RequestParam MultiValueMap<String, String> parameters) {

	ServletUriComponentsBuilder builder = ServletUriComponentsBuilder.fromCurrentRequest();
	builder.replaceQueryParam("page", new Object[0]);

	model.addAttribute("baseUri", builder.build().toUri());
	model.addAttribute("users", repository.findAll(predicate, pageable));

	return "index";
}
 

/**
 * Creates a ServletUriComponentsBuilder from the current request with decoded query params. This
 * is needed to prevent double encoding for the query parameters when using
 * ServletUriComponentsBuilder.build(encoded=false)
 * ServletUriComponentsBuilder.build(encoded=true) cannot be used for RSQL since it throws an
 * exception on the use of '='
 */
// removing cast results in 'unclear varargs or non-varargs' warning
@SuppressWarnings("RedundantCast")
public static ServletUriComponentsBuilder fromCurrentRequestDecodedQuery() {
  ServletUriComponentsBuilder builder = ServletUriComponentsBuilder.fromCurrentRequest();
  Map<String, String[]> params = getCurrentRequest().getParameterMap();
  for (Entry<String, String[]> param : params.entrySet()) {
    builder.replaceQueryParam(param.getKey(), (Object[]) param.getValue());
  }
  return builder;
}
 

public ServletUriComponentsBuilder fromCurrentRequest() {
  return ServletUriComponentsBuilder.fromCurrentRequest();
}