HttpServletResponse 리턴타입

spring에서 HttpServletResponse 이용시에 String이나 ModelAndView를 이용하여 리턴해주어야함.

 

void일시에는 오류 발생하지않고 페이지에 화면 나오지 않음.

 

@RequestMapping("detail.do") 
public ModelAndView detail(int boardNo, Model model, HttpSession session,HttpServletResponse response,HttpServletRequest request) throws IOException { 
Map<String, Object> result = service.detail(boardNo, session,request,response); 
  if (session.getAttribute("user") != null) { 
  	model.addAttribute("like", result.get("like")); 
  } 
  model.addAttribute("highestLikeComment", result.get("highestLikeComment")); 
  model.addAttribute("file", result.get("file")); 
  model.addAttribute("reply", result.get("reply")); 
  model.addAttribute("comment", result.get("comment")); 
  model.addAttribute("board", result.get("board")); 
  ModelAndView view = new ModelAndView(); 
  view.setViewName("main/board/qna/detail"); 
  return view; 
}