[JAVA]Request to hashMap

public static Map getParameterMap(HttpServletRequest request){

Map parameterMap = new HashMap();

Enumeration enums = request.getParameterNames();

while(enums.hasMoreElements()){

String paramName = (String)enums.nextElement();

String[] parameters = request.getParameterValues(paramName);

if(parameters.length > 1){

parameterMap.put(paramName, parameters);

}else{

parameterMap.put(paramName, parameters[0]);

}

}

return parameterMap;

}