@RequestMapping(value = "/insertcomment", method = RequestMethod.POST)
  public String InsertComent(
      @RequestParam("comicId") String comicId,
      @RequestParam("comment") String comment,
      HttpSession httpSession) {

    System.out.println("comment:" + comment);
    User user = (User) httpSession.getAttribute("user");
    if (user != null) {

      Comment c = new Comment();
      c.setComicId(comicService.GetComic(comicId));
      c.setCommentDes(comment);
      c.setDateTime(new Date());
      c.setUserId(user);
      comicService.InsertComment(c);
    }
    return "redirect:/comic/comiclist/" + comicId;
  }
 @ResponseBody
 @RequestMapping(value = "/insertcommentback")
 public String InsertComentBack(
     @RequestParam("comment") String comment,
     @RequestParam("commentId") int commentId,
     @RequestParam("toId") String toId,
     HttpSession httpSession) {
   User user = (User) httpSession.getAttribute("user");
   if (user != null) {
     CommentSub cs = new CommentSub();
     Comment c = comicService.GetComent(commentId);
     c.setDateTime(new Date());
     cs.setCommentId(c);
     cs.setCommentDes(comment);
     cs.setToId(comicService.GetUser(toId));
     cs.setUpDate(new Date());
     cs.setFromId(user);
     comicService.InsertCommentBack(cs);
     comicService.UpdateComment(c);
     return "";
   }
   return null;
 }