@RequestMapping("bySubject")
public ResponseEntity<List<Topic>> findTopics(
HttpServletRequest request, @RequestParam String subject) throws Exception {
subject = new String(subject.getBytes("iso-8859-1"), "utf-8");
List<Topic> topics = topicDao.findTopicBySubject(subject, 1);
return new ResponseEntity<List<Topic>>(topics, HttpStatus.OK);
}
