@RequestMapping(value = "getJSON", method = RequestMethod.GET,produces={"text/html;charset=UTF-8;","application/json;"} )
    @ResponseBody
    public String getJson(HttpServletRequest request,HttpServletResponse response){
         response.setCharacterEncoding("UTF-8");
        
        return "说到底";
        
    }

前台.ajax({

       type: "GET",
       url: "getJSON.do",
       success: function(data){
           console.log(data);          
       }
   网上说加produces=“ { }”
   加了还是乱码。