C# 枚举不会从非字符串值序列化
我将此属性ScheduleDatePeriod作为此EditEventScheduleSettingsModel类的枚举。我将JSON序列化到javascript中的页面,使属性周期为:1。当我将其作为句点1提交到服务器时,枚举总是空的。为什么会这样 财产 行动 JSON 枚举 ValueProviderFactory Global.asax 我对JSONetValueProviderFactory进行了一些测试,我想我已经找到了问题的原因 下一行将周期值解析为long而不是int。枚举的值是int,导致到枚举的转换失败C# 枚举不会从非字符串值序列化,c#,asp.net,json,serialization,enums,C#,Asp.net,Json,Serialization,Enums,我将此属性ScheduleDatePeriod作为此EditEventScheduleSettingsModel类的枚举。我将JSON序列化到javascript中的页面,使属性周期为:1。当我将其作为句点1提交到服务器时,枚举总是空的。为什么会这样 财产 行动 JSON 枚举 ValueProviderFactory Global.asax 我对JSONetValueProviderFactory进行了一些测试,我想我已经找到了问题的原因 下一行将周期值解析为long而不是int。枚举的值是i
jsonObject = jsonSerializer.Deserialize<ExpandoObject>(jsonReader);
我真的找不到解决这个问题的好办法,但这些都是变通办法
改为将句点作为字符串值传入
使用默认的JsonValueProviderFactory
我不确定您是否提供了所使用的完整JSON,但我使用next JSON测试了您的示例,并且在fiddler中成功地对enum进行了反序列化测试
{
"eventId": 10,
"settings":
{
"Period" : 2
}
}
请注意,您应该使用JSON中的设置来匹配方法中的参数名称。可能重复我不想要名称值,并且与名称值无关。我不确定您是否提供了完整的JSON,它是有效的JSON。不需要额外的设置属性。你是对的,我已经从问题描述中检查了JSON,它工作正常。你使用了哪个JSON库?OP的问题似乎是值得一提的,你的答案中那部分在哪里?绝对正确。我正在使用JSON.NET提供程序工厂。我想知道为什么它的工作原理与.NET版本不同…我发布了代码,以防您想查看它,因为某些原因,它无法将值1序列化为枚举值。expando对象和dictionary具有正确的值。我希望我能使用这个值,但这将暂时起作用。
{
Period: 1
}
[DataContract(Namespace = "")]
public enum ScheduleDatePeriod
{
[EnumMember(Value = "0"), Display(Name = "None")]
None = 0,
[EnumMember(Value = "1"), Display(Name = "Day")]
Day = 1,
[EnumMember(Value = "2"), Display(Name = "Week")]
Week = 2
}
public class JsonNetValueProviderFactory : ValueProviderFactory
{
public override IValueProvider GetValueProvider(ControllerContext controllerContext)
{
// first make sure we have a valid context
if (controllerContext == null)
throw new ArgumentNullException("controllerContext");
// now make sure we are dealing with a json request
if (!controllerContext.HttpContext.Request.ContentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))
return null;
// get a generic stream reader (get reader for the http stream)
var streamReader = new StreamReader(controllerContext.HttpContext.Request.InputStream);
// convert stream reader to a JSON Text Reader
var jsonReader = new JsonTextReader(streamReader);
// tell JSON to read
if (!jsonReader.Read())
return null;
// make a new Json serializer
var jsonSerializer = new JsonSerializer();
jsonSerializer.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
// add the dyamic object converter to our serializer
jsonSerializer.Converters.Add(new ExpandoObjectConverter());
// use JSON.NET to deserialize object to a dynamic (expando) object
Object jsonObject;
// if we start with a "[", treat this as an array
if (jsonReader.TokenType == JsonToken.StartArray)
jsonObject = jsonSerializer.Deserialize<List<ExpandoObject>>(jsonReader);
else
jsonObject = jsonSerializer.Deserialize<ExpandoObject>(jsonReader);
// create a backing store to hold all properties for this deserialization
var backingStore = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);
// add all properties to this backing store
AddToBackingStore(backingStore, String.Empty, jsonObject);
// return the object in a dictionary value provider so the MVC understands it
return new DictionaryValueProvider<object>(backingStore, CultureInfo.CurrentCulture);
}
private static void AddToBackingStore(Dictionary<string, object> backingStore, string prefix, object value)
{
var d = value as IDictionary<string, object>;
if (d != null)
{
foreach (KeyValuePair<string, object> entry in d)
{
AddToBackingStore(backingStore, MakePropertyKey(prefix, entry.Key), entry.Value);
}
return;
}
var l = value as IList;
if (l != null)
{
for (int i = 0; i < l.Count; i++)
{
AddToBackingStore(backingStore, MakeArrayKey(prefix, i), l[i]);
}
return;
}
// primitive
backingStore[prefix] = value;
}
private static string MakeArrayKey(string prefix, int index)
{
return prefix + "[" + index.ToString(CultureInfo.InvariantCulture) + "]";
}
private static string MakePropertyKey(string prefix, string propertyName)
{
return (String.IsNullOrEmpty(prefix)) ? propertyName : prefix + "." + propertyName;
}
}
ValueProviderFactories.Factories.Remove(ValueProviderFactories.Factories.OfType<JsonValueProviderFactory>().FirstOrDefault());
ValueProviderFactories.Factories.Add(new JsonNetValueProviderFactory());
jsonObject = jsonSerializer.Deserialize<ExpandoObject>(jsonReader);
{
"eventId": 10,
"settings":
{
"Period" : 2
}
}