我不确定这是否是完整的答案,因为不清楚您想要实现什么。
显然,C# 是帕斯卡命名法,而 JSON 是驼峰命名法。
因此,对于我们的 ASP.Net Web API 应用程序,我们已经为 Json.NET 实现了 DataConverter:
public class DataConverter : JsonConverter
{
#region Overriding
public override bool CanRead
{
get { return true; }
}
public override bool CanWrite
{
get { return true; }
}
public override bool CanConvert(Type objectType)
{
return true;
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return this.ReadValue(reader);
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
this.WriteValue(writer, value, serializer);
}
#endregion
#region Assistants
private object ReadValue(JsonReader reader)
{
while (reader.TokenType == JsonToken.Comment)
{
if (reader.Read() == false)
throw new Exception("Unexpected end.");
}
switch (reader.TokenType)
{
case JsonToken.StartObject:
return this.ReadObject(reader);
case JsonToken.StartArray:
return this.ReadList(reader);
default:
if (this.CheckPrimitive(reader.TokenType) == true)
return reader.Value;
throw new Exception(string.Format(CultureInfo.InvariantCulture, "Unexpected token when converting ExpandoObject: {0}", reader.TokenType));
}
}
private object ReadList(JsonReader reader)
{
List<object> collection = new List<object>();
while (reader.Read() == true)
{
switch (reader.TokenType)
{
case JsonToken.Comment:
break;
case JsonToken.EndArray:
return collection;
default:
object value = this.ReadValue(reader);
collection.Add(value);
break;
}
}
throw new Exception("Unexpected end.");
}
private object ReadObject(JsonReader reader)
{
IDictionary<string, object> expando = new ExpandoObject();
while (reader.Read() == true)
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
string property = reader.Value.ToString().ToCase(Casing.Pascal);
if (reader.Read() == false)
throw new Exception("Unexpected end.");
object value = this.ReadValue(reader);
expando[property] = value;
break;
case JsonToken.Comment:
break;
case JsonToken.EndObject:
return expando;
}
}
throw new Exception("Unexpected end.");
}
private void WriteValue(JsonWriter writer, object value, JsonSerializer serializer)
{
if (this.CheckPrimitive(value) == true)
{
writer.WriteValue(value);
return;
}
if (value is Guid)
{
this.WriteValue(writer, (Guid)value, serializer);
return;
}
if (value is MyType)
{
this.WriteValue(writer, (MyType)value, serializer);
return;
}
if (value is IDynamicMetaObjectProvider && value is IDictionary<string, object>)
{
this.WriteObject(writer, (IDictionary<string, object>)value, serializer);
return;
}
if (value is IEnumerable)
{
IEnumerable enumerable = value as IEnumerable;
this.WriteArray(writer, enumerable, serializer);
return;
}
this.WriteObject(writer, value, serializer);
}
private void WriteValue(JsonWriter writer, Guid guid, JsonSerializer serializer)
{
writer.WriteValue(guid.ToString());
}
private void WriteValue(JsonWriter writer, MyType myType, JsonSerializer serializer)
{
writer.WriteValue(myType.ToString());
}
private void WriteArray(JsonWriter writer, IEnumerable enumerable, JsonSerializer serializer)
{
writer.WriteStartArray();
foreach (object value in enumerable)
{
this.WriteValue(writer, value, serializer);
}
writer.WriteEndArray();
}
private void WriteObject(JsonWriter writer, object value, JsonSerializer serializer)
{
writer.WriteStartObject();
foreach (PropertyInfo properties in value.GetType().GetProperties())
{
ParameterInfo[] parameters = properties.GetGetMethod().GetParameters();
if (parameters.Length == 0)
{
writer.WritePropertyName(properties.Name.ToCase(Casing.Camel));
this.WriteValue(writer, properties.GetValue(value), serializer);
}
}
writer.WriteEndObject();
}
private void WriteObject(JsonWriter writer, IDictionary<string, object> value, JsonSerializer serializer)
{
writer.WriteStartObject();
foreach (KeyValuePair<string, object> properties in value)
{
writer.WritePropertyName(properties.Key.ToCase(Casing.Camel));
this.WriteValue(writer, properties.Value, serializer);
}
writer.WriteEndObject();
}
private bool CheckPrimitive(JsonToken token)
{
switch (token)
{
case JsonToken.Integer:
case JsonToken.Float:
case JsonToken.String:
case JsonToken.Boolean:
case JsonToken.Null:
case JsonToken.Undefined:
case JsonToken.Date:
case JsonToken.Bytes:
return true;
}
return false;
}
private bool CheckPrimitive(object value)
{
if (value == null)
return true;
if (value is bool)
return true;
if (value is byte)
return true;
if (value is sbyte)
return true;
if (value is short)
return true;
if (value is ushort)
return true;
if (value is int)
return true;
if (value is uint)
return true;
if (value is long)
return true;
if (value is ulong)
return true;
if (value is float)
return true;
if (value is double)
return true;
if (value is decimal)
return true;
if (value is char)
return true;
if (value is string)
return true;
if (value is DateTime)
return true;
if (value is Enum)
return true;
return false;
}
#endregion
}
当JSON转换为C#对象时,它将"someProperty"转换为"SomeProperty",在相反的方向上,它将"SomeProperty"转换为"someProperty"。这使我们可以在API控制器中使用动态关键字(在ASP.Net Core项目的输入参数中需要属性[FromBody])。
CamelCasePropertyNameResolver
正是为此而设计的。只需在您的webapi配置中注册即可。这样可以让您的客户端自由使用JavaScript约定,而服务则自由使用C#约定。 - knobcreekman