将Json字符串反序列化为Enum C＃ [英] Deserialize Json string to Enum C#

问题描述

我正在对stringEnumConverter的自定义版本编写测试。但是当我反序列化时，我的测试不断抛出。我搜索了堆栈溢出，但是找不到我做错了什么。以下是我在做什么的示例：

I am writing a test on a custom version of stringEnumConverter. But my test keeps throwing when I deserialize. I searched over stack overflow, but could not find what I did wrong. Following is a sample of what I'm doing:

namespace ConsoleApp2
{
    [Flags]
    [JsonConverter(typeof(StringEnumConverter))]
    enum TestEnum
    {
        none = 0, 
        obj1 = 1,
        obj2 = 2
    }

    class Program
    {
        static void Main(string[] args)
        {
            var jsonString = "{none}";
            var deserializedObject = JsonConvert.DeserializeObject<TestEnum>(jsonString);
        }
    }
}

我遇到的例外解析枚举时，反序列化行是意外令牌StartObject。

The exception I get on the deserialize line is Unexpected token StartObject when parsing enum.

我怀疑这可能是因为我表示的json字符串错误，我也尝试过 {\ none\}， {\ TestEnum\：\ none\}， {TestEnum：none}， {none}和 none 。

I suspect it might be because I am representing the json string wrong, I also tried "{\"none\"}", "{\"TestEnum\":\"none\"}", "{TestEnum:none}", "{none}" and "none".

推荐答案

{none}不是有效的JSON，但'none'是有效的！

{none} is not valid JSON, but 'none' is valid!

您应该尝试以下操作：

public class Program
{
    public static void Main()
    {
        Console.WriteLine("Hello World");
        var jsonString = "'none'";
        var deserializedObject = JsonConvert.DeserializeObject<TestEnum>(jsonString);
        Console.WriteLine(deserializedObject);
    }
}

干杯！

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