How to use

getParameterMap

method

in

javax.portlet.filter.ActionRequestWrapper

@Override
public Map<String, String[]> getParameterMap() {
  Map<String, String[]> map = new HashMap<>();
  if (_inherit) {
    map.putAll(super.getParameterMap());
  }
  map.putAll(_params);
  return map;
}

@Override
public Map<String, String[]> getParameterMap() {
  Map<String, String[]> paramMap = new HashMap<String, String[]>();
  paramMap.putAll(super.getParameterMap());
  paramMap.putAll(getMultipartParameters());
  return paramMap;
}

@Override
@SuppressWarnings("unchecked")
public Map<String, String[]> getParameterMap() {
  Map<String, String[]> paramMap = new HashMap<String, String[]>();
  paramMap.putAll(super.getParameterMap());
  paramMap.putAll(getMultipartParameters());
  return paramMap;
}