How to use

getParameterMap

method

in

com.atlassian.oauth.Request

/**
 * Returns the value of the parameter.  If there are multiple parameters for the value, only the first is returned.
 *
 * @return the value of the parameter
 */
public String getParameter(String parameterName) {
  Iterable<String> values = getParameterMap().get(parameterName);
  if (values == null) {
    return null;
  }
  Iterator<String> it = values.iterator();
  if (!it.hasNext()) {
    return null;
  }
  return it.next();
}