使用 JavaScriptSerializer 序列化字典 [英] Serializing dictionaries with JavaScriptSerializer

问题描述

显然，IDictionary 被序列化为 KeyValuePair 对象的数组(例如，[{Key:"foo", Value:"bar"}, ...]).是否可以将其序列化为一个对象(例如，{foo:"bar"})?

Apparently, IDictionary<string,object> is serialized as an array of KeyValuePair objects (e.g., [{Key:"foo", Value:"bar"}, ...]). Is is possible to serialize it as an object instead (e.g., {foo:"bar"})?

推荐答案

虽然我同意 JavaScriptSerializer 是废话，而 Json.Net 是更好的选择，但有一种方法可以让 JavaScriptSerializer 按照你想要的方式序列化.您必须注册一个转换器并使用如下方式覆盖 Serialize 方法:

Although I agree that JavaScriptSerializer is a crap and Json.Net is a better option, there is a way in which you can make JavaScriptSerializer serialize the way you want to. You will have to register a converter and override the Serialize method using something like this:

    public class KeyValuePairJsonConverter : JavaScriptConverter
{
    public override object Deserialize(IDictionary<string, object> dictionary, Type type, JavaScriptSerializer serializer)
    {
        var instance = Activator.CreateInstance(type);

        foreach (var p in instance.GetType().GetPublicProperties())
        {
            instance.GetType().GetProperty(p.Name).SetValue(instance, dictionary[p.Name], null);
            dictionary.Remove(p.Name);
        }

        foreach (var item in dictionary)
            (instance).Add(item.Key, item.Value);

        return instance;
    }
    public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
    {
        var result = new Dictionary<string, object>();
        var dictionary = obj as IDictionary<string, object>;
        foreach (var item in dictionary)
            result.Add(item.Key, item.Value);
        return result;
    }
    public override IEnumerable<Type> SupportedTypes
    {
        get
        {
            return new ReadOnlyCollection<Type>(new Type[] { typeof(your_type) });
        }
    }
}

JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
javaScriptSerializer.RegisterConverters(new JavaScriptConverter[] { new ExpandoJsonConverter() });
jsonOfTest = javaScriptSerializer.Serialize(test);
// {"x":"xvalue","y":"/Date(1314108923000)/"}

希望这有帮助！

这篇关于使用 JavaScriptSerializer 序列化字典的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！