Web Api 返回参数，实现统一标准化！

string camelCaseObj = JsonConvert.SerializeObject(data,
                                     Newtonsoft.Json.Formatting.None,
                                     new JsonSerializerSettings()
                                     {
                                         NullValueHandling = NullValueHandling.Ignore,
                                         ReferenceLoopHandling = ReferenceLoopHandling.Ignore,
                                         ContractResolver = new CamelCasePropertyNamesContractResolver()
                                     }); //--驼峰格式的命名规范

camelCaseObj= camelCaseObj.ToLower();    //--全部小写的命名规范

var jsonConvertCommonData = JsonConvert.DeserializeObject(camelCaseObj);