如何将实体类传入redis 将实体类转换成json

// 定义实体转json需要方法
   Product product = new Product();
   GsonBuilder gb = new GsonBuilder();
   gb.registerTypeAdapter(java.util.Date.class, new DateSerializer()).setDateFormat(DateFormat.LONG);
   Gson gson = gb.create();　String str = gson.toJson(product)
 
  //String 转 实体累
　Gson gson = new Gson();
  String strOrderInfo = request.getParameter("orderInfo");
  BaoJiaOrderEntity orderEntity = gson.fromJson(strOrderInfo, BaoJiaOrderEntity.class);
 
 //String  转 MAP
  String req；
  Gson josn = new Gson();
 第一种： Map mapOrder = josn.fromJson(req, Map.class);Map<String, String> resultMap2 = josn.fromJson( jsonStr, new TypeToken<Map<String, String>>() { }.getType());

 

注意事项：定义map时定义为Map<String, Object>确实会将3，转为3.0    定义为Map<String, String>就可以了。