json日期格式問題

問題代碼

Gson gson = new Gson();
response.getWriter().print(URLEncoder.encode(gson.toJson(list),"utf-8"));

正確代碼：

  Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").create();
response.getWriter().print(URLEncoder.encode(gson.toJson(list),"utf-8"));