您可以提供设置来
JsonConvert.DeserializeObject告诉它如何处理空值（在这种情况下，还有更多）：
var settings = new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore, MissingMemberHandling = MissingMemberHandling.Ignore };var jsonModel = JsonConvert.DeserializeObject<Customer>(jsonString, settings);
