Question

快速提问：

在JSONNet中 - 如何将bool true / false序列化为bool 1/0

我可以看到我们如何处理空值以及所有似乎无法找到如何执行此操作的内容。

这可能吗？

Answer 1

您可以实现这样的自定义转换器：

[TestFixture]
public class CustomJsonSerialization
{
    [Test]
    public void Test()
    {
        string serializeObject = JsonConvert.SerializeObject(true, new BoolConverter());
        Assert.That(serializeObject, Is.EqualTo("1"));
        var deserializeObject = JsonConvert.DeserializeObject<bool>(serializeObject, new BoolConverter());
        Assert.That(deserializeObject, Is.True);
    }
}

public class BoolConverter : JsonConverter
{
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        writer.WriteValue(((bool)value) ? 1 : 0);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        return reader.Value.ToString() == "1";
    }

    public override bool CanConvert(Type objectType)
    {
        return objectType == typeof(bool);
    }
}

Answer 2

受this response in similar question的启发，可以解决如下问题。

[JsonIgnore]
public bool SomeFlag { get; set; }

[JsonProperty(nameof(SomeFlag))]
public int SomeFlagAsInt
{
    get => SomeFlag ? 1 : 0;
    set => SomeFlag = value > 0;
}

Answer 3

如果有人需要，这是我的版本（在vb中）。它还处理可以为空的布尔

Imports Newtonsoft.Json

Public Class MyBooleanConverter
    Inherits JsonConverter

Public Overrides ReadOnly Property CanWrite As Boolean
    Get
        Return True
    End Get
End Property

Public Overrides Sub WriteJson(writer As JsonWriter, value As Object, serializer As JsonSerializer)
    Dim boolVal As Boolean = value
    writer.WriteValue(If(boolVal, 1, 0))
End Sub

Public Overrides Function ReadJson(reader As JsonReader, objectType As Type, existingValue As Object, serializer As JsonSerializer) As Object
    Dim value = reader.Value
    If IsNothing(value) OrElse String.IsNullOrWhiteSpace(value.ToString()) OrElse "0" = value Then
        Return False
    End If
    If 0 = String.Compare("yes", value, True) OrElse 0 = String.Compare("true", value, True) Then
        Return True
    End If
    Return False
End Function

Public Overrides Function CanConvert(objectType As Type) As Boolean
    Return objectType = GetType(Boolean) OrElse objectType = GetType(Boolean?) 'OrElse objectType = GetType(String)
End Function
End Class

我是根据@John在how to get newtonsoft to deserialize yes and no to boolean

开始的

Answer 4

声明两个单独的属性，对序列化隐藏真正的属性，而改用“ fake” int一个。像这样用牛顿的属性装饰两者：

[JsonIgnore] public bool Bool { internal get; set; }
[JsonProperty("your_dispay_name")] public string Int { get { return this.Bool ? 1 : 0; } }

Answer 5

@DavidPeden 回答 v2

更好的字符串处理

/// <summary>
///  CUSTOM BOOLEAN -> 0 | 1 CONVERTER
/// </summary>
public class BoolConverter : JsonConverter
{
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        writer.WriteValue(bool.TryParse(value?.ToString(), out var parsed) ? (parsed ? 1 : 0) : 0);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        return int.TryParse(reader.Value?.ToString(), out var parsed) && parsed == 1;
    }

    public override bool CanConvert(Type objectType)
    {
        return objectType == typeof(bool) || objectType == typeof(bool?);
    }
}

JSonNet布尔序列化

5 个答案:

更好的字符串处理