Question

鉴于 public class Something { [JsonProperty(PropertyName = "Ver")] public string ver { get; set; } [JsonProperty(PropertyName = "SomethingElse")] public object somethingElse { get; set; } // will blow up // public SomethingElse somethingElse { get; set; } // will not } public class SomethingElse { [JsonProperty(PropertyName = "uuid")] public Guid uuid { get; set; } } 试图序列化然后反序列化Something会将类型为Guid的Unable转换对象抛出到Byte []异常，如果某些东西的成员是对象而不是类型本身。

很抱歉缺乏细节。上面是一个简化的类，您可以序列化但不能反序列化该对象。下面的匹配是更紧密的情况，只有差异是我们需要的字典，这将以完全相同的方式失败。该示例适用于JSOn，而不是BSON。序列化似乎有效，只是反序列化在JSonWriter中抛出异常，无法将类型为'System.Guid'的对象强制转换为'System.Byte []'，第552行

case JsonToken.Bytes:

WriteValue((byte[])reader.Value);<-- is trying to case a Guid to byte array

中断;

    static void Main(string[] args)
    {
           const string path = @"C:\zzz_bson.dat";
           WriteBson(path);
           ReadBson(path);
    }

    private static void ReadBson(string path)
    {
        var jsonSerializer = new JsonSerializer();
        var file = File.OpenRead(path);
        var binaryReader = new BinaryReader(file);
        var bsonReader = new BsonReader(binaryReader);
        var something = jsonSerializer.Deserialize(bsonReader); 
        file.Close();
    }

    private static void WriteBson(string path)
    {
        //var something = new Dictionary<string, Guid> { { "uuid", new Guid("8afbc8b8-5449-4c70-abd4-3e07046d0f61") } };  //fails
        var something = new Dictionary<string, string> { { "uuid", new Guid("8afbc8b8-5449-4c70-abd4-3e07046d0f61").ToString() } }; // works
        var jsonSerializer = new JsonSerializer();
        var file = File.OpenWrite(path);
        var binaryWriter = new BinaryWriter(file);
        var bsonWriter = new BsonWriter(binaryWriter);
        jsonSerializer.Serialize(bsonWriter, something);
        file.Close();
    }

BSon异常newtonsoft.json

0 个答案: