在 JSON.NET 数据解析期间忽略解析错误

发布于09月30日

我有一个预定义数据 struct 的对象:

public class A
{
    public string Id {get;set;}
    public bool? Enabled {get;set;}
    public int? Age {get;set;}
}

JSON应该是

{ "Id": "123", "Enabled": true, "Age": 23 }

I want to handle JSON error in positive way, and whenever server returns unexpected values for defined data-types I want it to be ignore and default value is set (null).

现在，当JSON部分无效时，我得到了JSON阅读器异常:

{ "Id": "123", "Enabled": "NotABoolValue", "Age": 23 }

而且我一点也没有得到任何东西.

new A() { Id = "123", Enabled = null, Age = 23 }

并在可能的情况下解析警告. 用JSON.NET可以实现吗？

推荐答案

要处理反序列化错误，请使用以下代码:

var a = JsonConvert.DeserializeObject<A>("-- JSON STRING --", new JsonSerializerSettings
    {
        Error = HandleDeserializationError
    });

其中HandleDeserializationError表示以下方法:

public void HandleDeserializationError(object sender, ErrorEventArgs errorArgs)
{
    var currentError = errorArgs.ErrorContext.Error.Message;
    errorArgs.ErrorContext.Handled = true;
}

The HandleDeserializationError will be called as many times as there are errors in the json string. The properties that are causing the error will not be initialized.