使用retrofit2 上传json 数据

写一下构建方式

 MediaType type = MediaType.parse("application/json; charset=UTF-8");

        HashMap<String, String> paramsMap = new HashMap<>();
        paramsMap.put("workPlanId", workPlanId);
        String data = JsonUtil.parseMapToJson(paramsMap);
        RequestBody requestBody = RequestBody.create(type, data);