Templated Links for spring-hateoas workaround

templated.java

import org.apache.commons.lang.StringUtils;
import org.springframework.core.DefaultParameterNameDiscoverer;
import org.springframework.hateoas.Link;
import org.springframework.hateoas.UriTemplate;
import org.springframework.hateoas.mvc.ControllerLinkBuilder;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.util.UriComponentsBuilder;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

import static org.springframework.hateoas.TemplateVariable.VariableType.REQUEST_PARAM;

public class Utils {
    public static Link getTemplatedLink(final Method m, final String rel) {
        DefaultParameterNameDiscoverer disco = new DefaultParameterNameDiscoverer();

        ControllerLinkBuilder builder = ControllerLinkBuilder.linkTo(m.getDeclaringClass(), m);
        UriTemplate uriTemplate = new UriTemplate(UriComponentsBuilder.fromUri(builder.toUri()).build().toUriString());
        Annotation[][] parameterAnnotations = m.getParameterAnnotations();

        int param = 0;
        for (Annotation[] parameterAnnotation : parameterAnnotations) {
            for (Annotation annotation : parameterAnnotation) {
                if (annotation.annotationType().equals(RequestParam.class)) {
                    RequestParam rpa = (RequestParam) annotation;
                    String parameterName = rpa.name();
                    if (StringUtils.isEmpty(parameterName)) parameterName = disco.getParameterNames(m)[param];
                    uriTemplate = uriTemplate.with(parameterName, REQUEST_PARAM);
                }
            }
            param++;
        }
        return new Link(uriTemplate, rel);
    }
}