controller跳转另外一个controller

    @RequestMapping(value = MvcRequestMappingPath.VIEW_BABY_BABYS, method = RequestMethod.GET)    public String view(            HttpSession session, @PathVariable int id, Model mvcModel,  @PathVariable String tab, @PathVariable String parentTab) {        CommunityBabyEntity entity = service.findOneCommunityBaby(id);        mvcModel.addAttribute("entity", entity);        mvcModel.addAttribute("tabId", tab);        return "forward:/baby/babys/pic/viewpic/"+id+"/createTab/mainTab";  //转发 mvcModel 还存在//        return "redirect:pic/viewpic/2/createTab/mainTab";   //重定向 mvc 不存在
    }

@RequestMapping(value = MvcRequestMappingPath.VIEW_BABY_PIC, method = RequestMethod.GET)public String view(HttpSession session, Model mvcModel, @PathVariable int id,                   @PathVariable String tab, @PathVariable String parentTab) {    List<BabyPicturesEntity> list = service.findPicList(id);    mvcModel.addAttribute("list", list);    return Views.BABY_BABYS + Views.VIEW;}