我想在MonoDroid项目中使用ServiceStack进行Json序列化/反序列化。MonoDroid下的ServiceStack JSON处理错误
我已经构建了ServiceStack在MonoDroid环境中运行它,但是现在我遇到了JSON反序列化的问题。
示例代码:
public class Track
{
public string Id { get; set; }
public string Title { get; set; }
public string Artist { get; set; }
public string Hash { get; set; }
public string Type { get; set; }
}
}
...
var track = new Track { Id = "1", Artist = "artist name", Hash = "654874", Title = "song title", Type = "mp3", };
var json = ServiceStack.Text.JsonSerializer.SerializeToString(track);
var track1 = ServiceStack.Text.JsonSerializer.DeserializeFromString<Track>(json);
在反序列化我有一个例外: 未处理的异常:
System.ArgumentNullException: Argument cannot be null.
Parameter name: method
堆栈跟踪:
[External Code]
0x5E in ServiceStack.Text.Json.JsonReader.GetParseFn at [...]\Android\ServiceStack.Text\src\ServiceStack.Text\Json\JsonReader.Generic.cs:36 C#
0x2 in ServiceStack.Text.Json.JsonTypeSerializer.GetParseFn at [...]\Android\ServiceStack.Text\src\ServiceStack.Text\Json\JsonTypeSerializer.cs:283 C#
0xF in ServiceStack.Text.Common.TypeAccessor.Create at [...]\Android\ServiceStack.Text\src\ServiceStack.Text\Common\DeserializeType.cs:146 C#
0x142 in ServiceStack.Text.Common.DeserializeType`1[[ServiceStack.Text.Json.JsonTypeSerializer, ServiceStack.Text, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].GetParseMethod at [...]\Android\ServiceStack.Text\src\ServiceStack.Text\Common\DeserializeType.cs:60 C#
0x43A in ServiceStack.Text.Common.JsReader`1[[ServiceStack.Text.Json.JsonTypeSerializer, ServiceStack.Text, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].GetParseFn at [...]\Android\ServiceStack.Text\src\ServiceStack.Text\Common\JsReader.cs:100 C#
0x6 in ServiceStack.Text.Json.JsonReader`1[[Database.Models.Track, AssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]..cctor at [...]\Android\ServiceStack.Text\src\ServiceStack.Text\Json\JsonReader.Generic.cs:58 C#
0x1B in ServiceStack.Text.JsonSerializer.DeserializeFromString at [...]\Android\ServiceStack.Text\src\ServiceStack.Text\JsonSerializer.cs:33 C#
正如我看到有:
var genericType = typeof(JsonReader<>).MakeGenericType(type);
var mi = genericType.GetMethod("GetParseFn", BindingFlags.Public | BindingFlags.Static);
parseFactoryFn = (ParseFactoryDelegate)Delegate.CreateDelegate(typeof(ParseFactoryDelegate), mi);
genericType是 “ServiceStack.Text.Json.JsonReader`1 [System.String]” 类型是 “System.String”
因此,有 “米” 变量为空
是否有任何想法如何解决它,或在哪里看?
谢谢。
这正是我的问题。我想使用** PreserveAttribute **来解决它。谢谢你的解释。 – Anton 2012-04-20 16:27:38