Question

有JavaScriptSerializer（我现在不想使用其他库），我可以做这样的事情吗？

class Model 
{
    string[] Values { get; set; }
}

// using the serializer

JavaScriptSerializer serializer = new JavaScriptSerializer();

// this works
Model workingModel = serializer.Deserialize<Model>("{ Values : ['1234', '2346'] }");

// this works
Model wontWorkModel = serializer.Deserialize<Model>("{ Values : 'test' }");

我希望wontWorkModel.Values成为包含1个项目的数组 - test。

这是否可以使用我指定的JSON？

修改

我能够使用TypeConverter并将其插入string[]类型中来解决这个问题，但它看起来非常hackish（并且我可以在.NET中做到这一点很可怕）。

Answer 1

一种选择是创建一个JavascriptConverter：

public class ModelConverter   : JavaScriptConverter
    {
        public override object Deserialize(IDictionary<string, object> dictionary, Type type, JavaScriptSerializer serializer)
        {
            if (dictionary == null)
                throw new ArgumentNullException("dictionary");

            if (type == typeof(Model))
            {
                Model result = new Model();
                foreach (var item in dictionary.Keys)
                {
                    if (dictionary[item] is string && item == "Values")
                        result.Values = new string[] { (string)dictionary[item] };
                    else if(item=="Values")
                        result.Values = (string[])((ArrayList)dictionary[item]).ToArray(typeof(string));

                }
                return result;
            }
            return null;
        }

        public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
        {
            throw new NotImplementedException();
        }

        public override IEnumerable<Type> SupportedTypes
        {
            get { return new ReadOnlyCollection<Type>(new List<Type>(new Type[] { typeof(Model) })); }
        }
    }

您可以这样称呼它：

JavaScriptSerializer serializer = new JavaScriptSerializer();

ModelConverter sc = new ModelConverter();
serializer.RegisterConverters(new JavaScriptConverter[] { new ModelConverter() });


Model workingModel = serializer.Deserialize<Model>("{ Values : '2346' }");
Model workingModel1 = serializer.Deserialize<Model>("{ Values : ['2346'] }");
Model workingModel2 = serializer.Deserialize<Model>("{ Values : ['2346','3123'] }");

这是MSDN documentation for JavascriptConverter

Answer 2

为什么不简单地使用

Model wontWorkModel = serializer.Deserialize<Model>("{ Values : ['test'] }");

JavaScriptSerializer从JavaScript字符串或数组反序列化为.NET string []

2 个答案: