public class IntToStringConverter : JsonConverter<int>
{
public override int Read(ref Utf8JsonReader reader, Type type, JsonSerializerOptions options)
{
if (reader.TokenType == JsonTokenType.String)
{
ReadOnlySpan<byte> span = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan;
if (Utf8Parser.TryParse(span, out int number, out int bytesConsumed) && span.Length == bytesConsumed)
{
return number;
}
if (Int32.TryParse(reader.GetString(), out number))
{
return number;
}
}
return reader.GetInt32();
}
public override void Write(Utf8JsonWriter writer, int value, JsonSerializerOptions options)
{
writer.WriteStringValue(value.ToString());
}
}
services.AddMvc().AddJsonOptions(options =>
{
options.JsonSerializerOptions.Converters.Add(new IntToStringConverter());
});