@ResponseBody
    @RequestMapping(value = "/accountManagement.getMessage",method = RequestMethod.POST, produces = "text/json;charset=UTF-8")
    public String doGetMessage(){
        Map map = getUserService().getUserMessage(Param.getUserid());
        JSONObject json = new JSONObject();
        json.put("userid",Param.getUserid());
        json.put("username",map.get("username"));
        json.put("gender",map.get("gender"));
        json.put("education",map.get("education"));
        return json.toString();
    }
 

新增produces = "text/json;charset=UTF-8"就能解決問題。

2.前臺向後臺傳輸陣列資料的時候，程式碼應為

$.ajax({
   url: "",
   type: "post",
   data: {
       array: new Array(),
   },
   dataType: "json",
   success: function(data){},
})

@RequestParam(value ="array[]")String[] array