}
if("application/x-www-form-urlencoded".equals(req.getContentType())) {
+ @SuppressWarnings("unchecked")
Map<String, String[]> map = req.getParameterMap();
String client_id=null,client_secret=null,username=null,password=null;
for(Map.Entry<String, String[]> es : map.entrySet()) {