WebAPI JsonConverter for x-www-form-urlencoded not working

本文关键字：not working x-www-form-urlencoded for JsonConverter WebAPI | 更新日期: 2023-09-27 18:09:52

我创建了一个简单的模型，JsonConverter属性:

public class MyModel
{
    [JsonProperty(PropertyName = "my_to")]
    public string To { get; set; }
    [JsonProperty(PropertyName = "my_from")]
    public string From { get; set; }
    [JsonProperty(PropertyName = "my_date")]
    [JsonConverter(typeof(UnixDateConverter))]
    public DateTime Date { get; set; }
}

和我的转换器:

public sealed class UnixDateConverter : JsonConverter
{
    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        if (!CanConvert(reader.ValueType))
        {
            throw new JsonSerializationException();
        }
        return DateTimeOffset.FromUnixTimeSeconds((long)reader.Value).ToUniversalTime().LocalDateTime;
    }
    public override bool CanConvert(Type objectType)
    {
        return Type.GetTypeCode(objectType) == TypeCode.Int64;
    }
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        var datetime = (DateTime) value;
        var dateTimeOffset = new DateTimeOffset(datetime.ToUniversalTime());
        var unixDateTime = dateTimeOffset.ToUnixTimeSeconds();
        writer.WriteValue(unixDateTime);
    }
}

当我从Postman发送请求并将内容类型设置为application/json时，一切工作正常-我的转换器工作正常，调试器在转换器的断点处停止，但我必须使用x-www-form-urlencoded。

当发送数据为x-www-form-urlencoded时，是否有一个选项在模型内使用JsonConverter属性?

WebAPI JsonConverter for x-www-form-urlencoded not working

我设法通过创建实现IModelBinder的自定义模型绑定器来做到这一点

这是我的活页夹的通用版本:

internal class GenericModelBinder<T> : IModelBinder where T : class, new()
{
    public bool BindModel(HttpActionContext actionContext, ModelBindingContext bindingContext)
    {
        if (bindingContext.ModelType != typeof (T))
        {
            return false;
        }
        var model = (T) bindingContext.Model ?? new T();
        JObject @object = null;
        var task = actionContext.Request.Content.ReadAsAsync<JObject>().ContinueWith(t => { @object = t.Result; });
        task.Wait();
        var jsonString = @object.ToString(Formatting.None);
        JsonConvert.PopulateObject(jsonString, model);
        bindingContext.Model = model;
        return true;
    }
}

下面是示例用法:

[Route("save")]
[HttpPost]
public async Task<IHttpActionResult> Save([ModelBinder(typeof (GenericModelBinder<MyModel>))] MyModel model)
{
    try
    {
        //do some stuff with model (validate it, etc)
        await Task.CompletedTask;
        DbContext.SaveResult(model.my_to, model.my_from, model.my_date);
        return Content(HttpStatusCode.OK, "OK", new TextMediaTypeFormatter(), "text/plain");
    }
    catch (Exception e)
    {
        Debug.WriteLine(e);
        Logger.Error(e, "Error saving to DB");
        return InternalServerError();
    }
}

我不确定是否JsonProperty和JsonConverter属性工作，但他们应该。

我知道这可能不是最好的方法，但这段代码对我来说很有效。欢迎有任何建议

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