How to use

adaptAnnotation

method

in

org.springframework.web.method.HandlerMethod$HandlerMethodParameter

merged.add(adaptAnnotation(paramAnn));

merged.add(adaptAnnotation(paramAnn));

@Override
public Annotation[] getParameterAnnotations() {
  Annotation[] anns = this.combinedAnnotations;
  if (anns == null) {
    anns = super.getParameterAnnotations();
    for (Annotation[][] ifcAnns : getInterfaceParameterAnnotations()) {
      Annotation[] paramAnns = ifcAnns[getParameterIndex()];
      if (paramAnns.length > 0) {
        List<Annotation> merged = new ArrayList<>(anns.length + paramAnns.length);
        merged.addAll(Arrays.asList(anns));
        for (Annotation paramAnn : paramAnns) {
          boolean existingType = false;
          for (Annotation ann : anns) {
            if (ann.annotationType() == paramAnn.annotationType()) {
              existingType = true;
              break;
            }
          }
          if (!existingType) {
            merged.add(adaptAnnotation(paramAnn));
          }
        }
        anns = merged.toArray(new Annotation[0]);
      }
    }
    this.combinedAnnotations = anns;
  }
  return anns;
}