JavaScriptSerializer - 枚举作为字符串的 JSON 序列化

发布于 2024-08-25 14:18:57 字数 547 浏览 12 评论 0原文

我有一个包含 enum 属性的类，并且在使用 JavaScriptSerializer 序列化对象时，我的 json 结果包含枚举的整数值，而不是其 string< /代码>“名称”。有没有办法在我的 json 中以 string 形式获取枚举，而无需创建自定义 JavaScriptConverter？也许有一个属性可以用来装饰 enum 定义或对象属性？

举个例子：

enum Gender { Male, Female }

class Person
{
    int Age { get; set; }
    Gender Gender { get; set; }
}

所需的 JSON 结果：

{ "Age": 35, "Gender": "Male" }

理想情况下寻找内置 .NET 框架类的答案，如果不可能，欢迎使用替代方案（如 Json.net）。

原文

I have a class that contains an enum property, and upon serializing the object using JavaScriptSerializer, my json result contains the integer value of the enumeration rather than its string "name". Is there a way to get the enum as a string in my json without having to create a custom JavaScriptConverter? Perhaps there's an attribute that I could decorate the enum definition, or object property, with?

As an example:

enum Gender { Male, Female }

class Person
{
    int Age { get; set; }
    Gender Gender { get; set; }
}

Desired JSON result:

{ "Age": 35, "Gender": "Male" }

Ideally looking for answer with built-in .NET framework classes, if not possible alternatives (like Json.net) are welcome.

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千柳 2024-09-01 14:18:58

不确定这是否仍然相关，但我必须直接写入 json 文件，我想出了以下将几个 stackoverflow 答案拼凑在一起的结果，

public class LowercaseJsonSerializer
{
    private static readonly JsonSerializerSettings Settings = new JsonSerializerSettings
    {
        ContractResolver = new LowercaseContractResolver()
    };

    public static void Serialize(TextWriter file, object o)
    {
        JsonSerializer serializer = new JsonSerializer()
        {
            ContractResolver = new LowercaseContractResolver(),
            Formatting = Formatting.Indented,
            NullValueHandling = NullValueHandling.Ignore
        };
        serializer.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
        serializer.Serialize(file, o);
    }

    public class LowercaseContractResolver : DefaultContractResolver
    {
        protected override string ResolvePropertyName(string propertyName)
        {
            return Char.ToLowerInvariant(propertyName[0]) + propertyName.Substring(1);
        }
    }
}

它确保我的所有 json 键都是小写的，根据 json“规则”开始。将其格式化为干净的缩进并忽略输出中的空值。同样，通过添加 StringEnumConverter，它可以打印枚举及其字符串值。

就我个人而言，我发现这是我能想到的最干净的方法，而不必用注释弄脏模型。

用法：

    internal void SaveJson(string fileName)
    {
        // serialize JSON directly to a file
        using (StreamWriter file = File.CreateText(@fileName))
        {
            LowercaseJsonSerializer.Serialize(file, jsonobject);
        }
    }

Not sure if this is still relevant but I had to write straight to a json file and I came up with the following piecing several stackoverflow answers together

public class LowercaseJsonSerializer
{
    private static readonly JsonSerializerSettings Settings = new JsonSerializerSettings
    {
        ContractResolver = new LowercaseContractResolver()
    };

    public static void Serialize(TextWriter file, object o)
    {
        JsonSerializer serializer = new JsonSerializer()
        {
            ContractResolver = new LowercaseContractResolver(),
            Formatting = Formatting.Indented,
            NullValueHandling = NullValueHandling.Ignore
        };
        serializer.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
        serializer.Serialize(file, o);
    }

    public class LowercaseContractResolver : DefaultContractResolver
    {
        protected override string ResolvePropertyName(string propertyName)
        {
            return Char.ToLowerInvariant(propertyName[0]) + propertyName.Substring(1);
        }
    }
}

It assures all my json keys are lowercase starting according to json "rules". Formats it cleanly indented and ignores nulls in the output. Aslo by adding a StringEnumConverter it prints enums with their string value.

Personally I find this the cleanest I could come up with, without having to dirty the model with annotations.

usage:

    internal void SaveJson(string fileName)
    {
        // serialize JSON directly to a file
        using (StreamWriter file = File.CreateText(@fileName))
        {
            LowercaseJsonSerializer.Serialize(file, jsonobject);
        }
    }

JavaScriptSerializer - 枚举作为字符串的 JSON 序列化

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稍微更面向未来的选项

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