如何将JSON反序列化为ASP.NET中的简单字典<string,string>?

json.net是这样做的…

string json = @"{""key1"":""value1"",""key2"":""value2""}";

var values = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);

更多的例子: Serializing Collections with Json.NET

我发现.NET有一种内置的方法可以将JSON字符串转换为 Dictionary<String, Object> 通过 System.Web.Script.Serialization.JavaScriptSerializer 在3.5中键入 System.Web.Extensions 装配。使用该方法 DeserializeObject(String) .

我在对静态.NET页面方法执行内容类型为'application/json'的ajax post(通过jquery)时偶然发现了这个问题,并看到了该方法(它有一个类型为 Object )神奇地收到了这本词典。

对于那些在网上搜索并在这篇文章上绊倒的人,我写了一篇关于如何使用JavaScriptSerializer类的博客文章。

多读… http://procbits.com/2011/04/21/quick-json-serializationdeserialization-in-c/

下面是一个例子:

var json = "{\"id\":\"13\", \"value\": true}";
var jss = new JavaScriptSerializer();
var table = jss.Deserialize<dynamic>(json);
Console.WriteLine(table["id"]);
Console.WriteLine(table["value"]);

尝试不使用任何外部JSON实现,因此我反序列化如下:

string json = "{\"id\":\"13\", \"value\": true}";

var serializer = new JavaScriptSerializer(); //using System.Web.Script.Serialization;

Dictionary<string, string> values = serializer.Deserialize<Dictionary<string, string>>(json);

我也有同样的问题,所以我自己写了这个。此解决方案与其他答案不同,因为它可以反序列化到多个级别。

只需将JSON字符串发送到 反序列化词典 函数将返回非强类型 Dictionary<string, object> 对象。

旧代码

private Dictionary<string, object> deserializeToDictionary(string jo)
{
    var values = JsonConvert.DeserializeObject<Dictionary<string, object>>(jo);
    var values2 = new Dictionary<string, object>();
    foreach (KeyValuePair<string, object> d in values)
    {
        // if (d.Value.GetType().FullName.Contains("Newtonsoft.Json.Linq.JObject"))
        if (d.Value is JObject)
        {
            values2.Add(d.Key, deserializeToDictionary(d.Value.ToString()));
        }
        else
        {
            values2.Add(d.Key, d.Value);
        }
    }
    return values2;
}

这个会回来的 字典<字符串,对象> Facebook JSON响应的对象。

试验

private void button1_Click(object sender, EventArgs e)
{
    string responsestring = "{\"id\":\"721055828\",\"name\":\"Dasun Sameera Weerasinghe\",\"first_name\":\"Dasun\",\"middle_name\":\"Sameera\",\"last_name\":\"Weerasinghe\",\"username\":\"dasun\",\"gender\":\"male\",\"locale\":\"en_US\",  hometown: {id: \"108388329191258\", name: \"Moratuwa, Sri Lanka\",}}";
    Dictionary<string, object> values = deserializeToDictionary(responsestring);
}

注:家乡进一步反序列化为 字典<字符串,对象> 对象。

更新

如果JSON字符串上没有数组,我以前的回答就很好了。这一个进一步反序列化到 List<object> 如果元素是数组。

只需将JSON字符串发送到 反序列化字典或列表 函数将返回非强类型 字典<字符串,对象> 对象或 列表对象 .

private static object deserializeToDictionaryOrList(string jo,bool isArray=false)
{
    if (!isArray)
    {
        isArray = jo.Substring(0, 1) == "[";
    }
    if (!isArray)
    {
        var values = JsonConvert.DeserializeObject<Dictionary<string, object>>(jo);
        var values2 = new Dictionary<string, object>();
        foreach (KeyValuePair<string, object> d in values)
        {
            if (d.Value is JObject)
            {
                values2.Add(d.Key, deserializeToDictionary(d.Value.ToString()));
            }
            else if (d.Value is JArray)
            {
                values2.Add(d.Key, deserializeToDictionary(d.Value.ToString(), true));
            }
            else
            {
                values2.Add(d.Key, d.Value);
            }
        }
        return values2;
    }else
    {
        var values = JsonConvert.DeserializeObject<List<object>>(jo);
        var values2 = new List<object>();
        foreach (var d in values)
        {
            if (d is JObject)
            {
                values2.Add(deserializeToDictionary(d.ToString()));
            }
            else if (d is JArray)
            {
                values2.Add(deserializeToDictionary(d.ToString(), true));
            }
            else
            {
                values2.Add(d);
            }
        }
        return values2;
    }
}

如果您追求的是一种轻量级的、没有添加引用的方法,也许我刚刚编写的这段代码可以工作(但我不能100%保证健壮性)。

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

public Dictionary<string, object> ParseJSON(string json)
{
    int end;
    return ParseJSON(json, 0, out end);
}
private Dictionary<string, object> ParseJSON(string json, int start, out int end)
{
    Dictionary<string, object> dict = new Dictionary<string, object>();
    bool escbegin = false;
    bool escend = false;
    bool inquotes = false;
    string key = null;
    int cend;
    StringBuilder sb = new StringBuilder();
    Dictionary<string, object> child = null;
    List<object> arraylist = null;
    Regex regex = new Regex(@"\\u([0-9a-z]{4})", RegexOptions.IgnoreCase);
    int autoKey = 0;
    for (int i = start; i < json.Length; i++)
    {
        char c = json[i];
        if (c == '\\') escbegin = !escbegin;
        if (!escbegin)
        {
            if (c == '"')
            {
                inquotes = !inquotes;
                if (!inquotes && arraylist != null)
                {
                    arraylist.Add(DecodeString(regex, sb.ToString()));
                    sb.Length = 0;
                }
                continue;
            }
            if (!inquotes)
            {
                switch (c)
                {
                    case '{':
                        if (i != start)
                        {
                            child = ParseJSON(json, i, out cend);
                            if (arraylist != null) arraylist.Add(child);
                            else
                            {
                                dict.Add(key, child);
                                key = null;
                            }
                            i = cend;
                        }
                        continue;
                    case '}':
                        end = i;
                        if (key != null)
                        {
                            if (arraylist != null) dict.Add(key, arraylist);
                            else dict.Add(key, DecodeString(regex, sb.ToString()));
                        }
                        return dict;
                    case '[':
                        arraylist = new List<object>();
                        continue;
                    case ']':
                        if (key == null)
                        {
                            key = "array" + autoKey.ToString();
                            autoKey++;
                        }
                        if (arraylist != null && sb.Length > 0)
                        {
                            arraylist.Add(sb.ToString());
                            sb.Length = 0;
                        }
                        dict.Add(key, arraylist);
                        arraylist = null;
                        key = null;
                        continue;
                    case ',':
                        if (arraylist == null && key != null)
                        {
                            dict.Add(key, DecodeString(regex, sb.ToString()));
                            key = null;
                            sb.Length = 0;
                        }
                        if (arraylist != null && sb.Length > 0)
                        {
                            arraylist.Add(sb.ToString());
                            sb.Length = 0;
                        }
                       continue;
                    case ':':
                        key = DecodeString(regex, sb.ToString());
                        sb.Length = 0;
                        continue;
                }
            }
        }
        sb.Append(c);
        if (escend) escbegin = false;
        if (escbegin) escend = true;
        else escend = false;
    }
    end = json.Length - 1;
    return dict; //theoretically shouldn't ever get here
}
private string DecodeString(Regex regex, string str)
{
    return Regex.Unescape(regex.Replace(str, match => char.ConvertFromUtf32(Int32.Parse(match.Groups[1].Value, System.Globalization.NumberStyles.HexNumber))));
}

[我知道这违反了操作限制1,但从技术上讲,你没有写,我写了]

我只需要分析 嵌套的 字典,比如

{
    "x": {
        "a": 1,
        "b": 2,
        "c": 3
    }
}

哪里 JsonConvert.DeserializeObject 没用。我发现了以下方法:

var dict = JObject.Parse(json).SelectToken("x").ToObject<Dictionary<string, int>>();

这个 SelectToken 让你深入到想要的领域。甚至可以指定类似 "x.y.z" 进一步进入JSON对象。

编辑: 这是可行的,但是使用json.net接受的答案要简单得多。如果有人只需要BCL代码,就留下这个。

它不受.NET框架开箱即用的支持。一个明显的疏忽“并非每个人都需要反序列化为具有命名属性的对象。所以最后我自己滚了:

<Serializable()> Public Class StringStringDictionary
    Implements ISerializable
    Public dict As System.Collections.Generic.Dictionary(Of String, String)
    Public Sub New()
        dict = New System.Collections.Generic.Dictionary(Of String, String)
    End Sub
    Protected Sub New(info As SerializationInfo, _
          context As StreamingContext)
        dict = New System.Collections.Generic.Dictionary(Of String, String)
        For Each entry As SerializationEntry In info
            dict.Add(entry.Name, DirectCast(entry.Value, String))
        Next
    End Sub
    Public Sub GetObjectData(info As SerializationInfo, context As StreamingContext) Implements ISerializable.GetObjectData
        For Each key As String in dict.Keys
            info.AddValue(key, dict.Item(key))
        Next
    End Sub
End Class

打电话:

string MyJsonString = "{ \"key1\": \"value1\", \"key2\": \"value2\"}";
System.Runtime.Serialization.Json.DataContractJsonSerializer dcjs = new
  System.Runtime.Serialization.Json.DataContractJsonSerializer(
    typeof(StringStringDictionary));
System.IO.MemoryStream ms = new
  System.IO.MemoryStream(Encoding.UTF8.GetBytes(MyJsonString));
StringStringDictionary myfields = (StringStringDictionary)dcjs.ReadObject(ms);
Response.Write("Value of key2: " + myfields.dict["key2"]);

抱歉把C和vb.net混用了。

我在这里添加了jsnake04和dasun提交的代码。我添加了用于创建对象列表的代码 JArray 实例。它有双向递归,但由于它在固定的有限树模型上运行,所以除非数据量很大,否则不会有堆栈溢出的风险。

/// <summary>
/// Deserialize the given JSON string data (<paramref name="data"/>) into a
///   dictionary.
/// </summary>
/// <param name="data">JSON string.</param>
/// <returns>Deserialized dictionary.</returns>
private IDictionary<string, object> DeserializeData(string data)
{
    var values = JsonConvert.DeserializeObject<Dictionary<string, object>>(data);

    return DeserializeData(values);
}

/// <summary>
/// Deserialize the given JSON object (<paramref name="data"/>) into a dictionary.
/// </summary>
/// <param name="data">JSON object.</param>
/// <returns>Deserialized dictionary.</returns>
private IDictionary<string, object> DeserializeData(JObject data)
{
    var dict = data.ToObject<Dictionary<String, Object>>();

    return DeserializeData(dict);
}

/// <summary>
/// Deserialize any elements of the given data dictionary (<paramref name="data"/>) 
///   that are JSON object or JSON arrays into dictionaries or lists respectively.
/// </summary>
/// <param name="data">Data dictionary.</param>
/// <returns>Deserialized dictionary.</returns>
private IDictionary<string, object> DeserializeData(IDictionary<string, object> data)
{
    foreach (var key in data.Keys.ToArray()) 
    {
        var value = data[key];

        if (value is JObject)
            data[key] = DeserializeData(value as JObject);

        if (value is JArray)
            data[key] = DeserializeData(value as JArray);
    }

    return data;
}

/// <summary>
/// Deserialize the given JSON array (<paramref name="data"/>) into a list.
/// </summary>
/// <param name="data">Data dictionary.</param>
/// <returns>Deserialized list.</returns>
private IList<Object> DeserializeData(JArray data)
{
    var list = data.ToObject<List<Object>>();

    for (int i = 0; i < list.Count; i++)
    {
        var value = list[i];

        if (value is JObject)
            list[i] = DeserializeData(value as JObject);

        if (value is JArray)
            list[i] = DeserializeData(value as JArray);
    }

    return list;
}

我在另一个答案中添加了对JSON中空值的检查

我也有同样的问题,所以我自己写了这个。这个解决方案是 与其他答案不同,因为它可以反序列化到 多层次。

只需将JSON字符串发送到 反序列化词典 函数它 将返回非强类型 Dictionary<string, object> 对象。

private Dictionary<string, object> deserializeToDictionary(string jo)
{
    var values = JsonConvert.DeserializeObject<Dictionary<string, object>>(jo);
    var values2 = new Dictionary<string, object>();
    foreach (KeyValuePair<string, object> d in values)
    {
        if (d.Value != null && d.Value.GetType().FullName.Contains("Newtonsoft.Json.Linq.JObject"))
        {
            values2.Add(d.Key, deserializeToDictionary(d.Value.ToString()));
        }
        else
        {
            values2.Add(d.Key, d.Value);
        }
    }
    return values2;
}

这个会回来的 字典<字符串,对象> Facebook的对象 JSON响应。

private void button1_Click(object sender, EventArgs e)
{
    string responsestring = "{\"id\":\"721055828\",\"name\":\"Dasun Sameera
        Weerasinghe\",\"first_name\":\"Dasun\",\"middle_name\":\"Sameera\",\"last_name\":\"Weerasinghe\",\"username\":\"dasun\",\"gender\":\"male\",\"locale\":\"en_US\",
        hometown: {id: \"108388329191258\", name: \"Moratuwa, Sri Lanka\",}}";
    Dictionary<string, object> values = deserializeToDictionary(responsestring);
}

注:家乡进一步反序列化为 字典<字符串,对象> 对象。

马克·伦德尔发布了这个 as a comment 我想把它作为一个答案发布,因为它是迄今为止唯一有效的解决方案,用于返回google recaptcha响应的成功和错误代码json结果。

string jsonReponseString= wClient.DownloadString(requestUrl);    
IDictionary<string, object> dict = new JavaScriptSerializer().DeserializeObject(jsonReponseString) as IDictionary<string, object>;

再次感谢,马克!

似乎所有这些答案都是假设你能从一个更大的物体中得到那个小绳子…对于那些只想在地图内某个地方用这样一本字典来简单地破译一个大的物体的人,以及那些正在使用 System.Runtime.Serialization.Json 数据合同系统,这里有一个解决方案:

An answer on gis.stackexchange.com 有 this interesting link . 我必须用archive.org恢复它,但它提供了一个非常完美的解决方案:自定义 IDataContractSurrogate 类,在该类中您完全实现自己的类型。我可以很容易地扩展它。

不过,我做了很多改动。由于原始源不再可用,我将在此处发布整个类:

using System;
using System.CodeDom;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Text;

namespace JsonTools
{
    /// <summary>
    /// Allows using Dictionary&lt;String,String&gt; and Dictionary&lt;String,Boolean&gt; types, and any others you'd like to add.
    /// Source: https://web.archive.org/web/20100317222656/my6solutions.com/post/2009/06/30/DataContractSerializer-DataContractJsonSerializer-JavaScriptSerializer-XmlSerializer-for-serialization.aspx
    /// </summary>
    public class JsonSurrogate : IDataContractSurrogate
    {
        /// <summary>
        /// Deserialize an object with added support for the types defined in this class.
        /// </summary>
        /// <typeparam name="T">Contract class</typeparam>
        /// <param name="json">JSON String</param>
        /// <param name="encoding">Text encoding</param>
        /// <returns>The deserialized object of type T</returns>
        public static T Deserialize<T>(String json, Encoding encoding)
        {
            if (encoding == null)
                encoding = new UTF8Encoding(false);
            DataContractJsonSerializer deserializer = new DataContractJsonSerializer(
                typeof(T), new Type[0], int.MaxValue, true, new JsonSurrogate(), false);
            using (MemoryStream stream = new MemoryStream(encoding.GetBytes(json)))
            {
                T result = (T)deserializer.ReadObject(stream);
                return result;
            }
        }

        // make sure all values in this are classes implementing JsonSurrogateObject.
        private static Dictionary<Type, Type> KnownTypes = 
            new Dictionary<Type, Type>()
            {
                {typeof(Dictionary<String, String>), typeof(SSDictionary)},
                {typeof(Dictionary<String, Boolean>), typeof(SBDictionary)}
            };

        #region Implemented surrogate dictionary classes

        [Serializable]
        public class SSDictionary : SurrogateDictionary<String>
        {
            public SSDictionary() : base() {}
            protected SSDictionary (SerializationInfo info, StreamingContext context) : base(info, context) {}
        }
        [Serializable]
        public class SBDictionary : SurrogateDictionary<Boolean>
        {
            public SBDictionary() : base() {}
            protected SBDictionary (SerializationInfo info, StreamingContext context) : base(info, context) {}
        }

        #endregion

        /// <summary>Small interface to easily extract the final value from the object.</summary>
        public interface JsonSurrogateObject
        {
            Object DeserializedObject { get; }
        }

        /// <summary>
        /// Class for deserializing any simple dictionary types with a string as key.
        /// </summary>
        /// <typeparam name="T">Any simple type that will be deserialized correctly.</typeparam>
            [Serializable]
        public abstract class SurrogateDictionary<T> : ISerializable, JsonSurrogateObject
        {
            public Object DeserializedObject { get { return dict; } }
            private Dictionary<String, T> dict;

            public SurrogateDictionary()
            {
                dict = new Dictionary<String, T>();
            }

            // deserialize
            protected SurrogateDictionary(SerializationInfo info, StreamingContext context)
            {
                dict = new Dictionary<String, T>();
                foreach (SerializationEntry entry in info)
                {
                    // This cast will only work for base types, of course.
                    dict.Add(entry.Name, (T)entry.Value);
                }
            }
            // serialize
            public void GetObjectData(SerializationInfo info, StreamingContext context)
            {
                foreach (String key in dict.Keys)
                {
                    info.AddValue(key, dict[key]);
                }
            }

        }

        /// <summary>
            /// Uses the KnownTypes dictionary to get the surrogate classes.
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public Type GetDataContractType(Type type)
        {
            Type returnType;
            if (KnownTypes.TryGetValue(type, out returnType))
            {
                return returnType;
            }
            return type;
        }

        public object GetObjectToSerialize(object obj, Type targetType)
        {
            throw new NotImplementedException();
        }

        /// <summary>
        ///     Gets the object out of the surrogate datacontract object. This function is the reason all surrogate objects need to implement the JsonSurrogateObject class.
        /// </summary>
        /// <param name="obj">Result of the deserialization</param>
        /// <param name="targetType">Expected target type of the deserialization</param>
        /// <returns></returns>
        public object GetDeserializedObject(object obj, Type targetType)
        {
            if (obj is JsonSurrogateObject)
            {
                return ((JsonSurrogateObject)obj).DeserializedObject;
            }
            return obj;
        }

        public Type GetReferencedTypeOnImport(string typeName, string typeNamespace, object customData)
        {
            return null;
        }

        #region not implemented

        public object GetCustomDataToExport(MemberInfo memberInfo, Type dataContractType)
        {
            throw new NotImplementedException();
        }

        public object GetCustomDataToExport(Type clrType, Type dataContractType)
        {
            throw new NotImplementedException();
        }

        public void GetKnownCustomDataTypes(Collection<Type> customDataTypes)
        {
            throw new NotImplementedException();
        }

        public CodeTypeDeclaration ProcessImportedType(CodeTypeDeclaration typeDeclaration, CodeCompileUnit compileUnit)
        {
            throw new NotImplementedException();
        }

        #endregion
    }
}

要向类中添加新的支持类型,只需添加类,为其提供正确的构造函数和函数(请看 SurrogateDictionary 例如),确保它继承 JsonSurrogateObject ,并将其类型映射添加到 KnownTypes 字典。包含的代理字典可以作为任何 Dictionary<String,T> 类型,其中t是正确反序列化的任何类型。

称之为“非常简单:

MyObjtype newObj = JsonSurrogate.Deserialize<MyObjtype>(jsonStr, encoding);

请注意,由于某些原因,使用包含空格的键字符串时会遇到问题;它们只是不在最终列表中。可能仅仅是因为它违反了JSON规范,而且我调用的API没有很好地实现,请注意,我不知道。无论如何,我通过regex在原始JSON数据中用下划线替换它们并在反序列化后修复字典来解决这个问题。

基于评论 above 尝试 JsonConvert.DeserializeObject<Dictionary<string,dynamic>>(json)

var json = @"{""key1"":1,""key2"":""value2"", ""object1"":{""property1"":""value1"",""property2"":[2,3,4,5,6,7]}}";
var parsedObject = JsonConvert.DeserializeObject<Dictionary<string,dynamic>>(json);

似乎对复杂的对象和列表也有效。

我刚在 RestSharp . This post 对我有帮助。

除了链接中的代码,这是我的代码。我现在得到了 Dictionary 当我这样做的时候,结果是:

var jsonClient = new RestClient(url.Host);
jsonClient.AddHandler("application/json", new DynamicJsonDeserializer());
var jsonRequest = new RestRequest(url.Query, Method.GET);
Dictionary<string, dynamic> response = jsonClient.Execute<JObject>(jsonRequest).Data.ToObject<Dictionary<string, dynamic>>();

注意您所期望的JSON类型——在我的例子中,我检索的是一个具有多个属性的对象。在附加的链接中,作者正在检索列表。

我的方法直接反序列化到IDictionary,中间没有Jobject或ExpandObject。代码使用converter,它基本上是从json.net源代码中的expandoobject converter类复制的,但使用的是idictionary而不是expandoobject。

用途:

var settings = new JsonSerializerSettings()
{
    Converters = { new DictionaryConverter() },
};
var result = JsonConvert.DeserializeObject<IDictionary<string, object>>(json, settings);

代码:

// based on ExpandoObjectConverter, but using arrays instead of IList, to behave similar to System.Web.Script.Serialization.JavaScriptSerializer
public class DictionaryConverter : JsonConverter
{
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        return ReadValue(reader);
    }

    public override bool CanConvert(Type objectType)
    {
        return (objectType == typeof(IDictionary<string, object>));
    }

    public override bool CanWrite
    {
        get { return false; }
    }

    private object ReadValue(JsonReader reader)
    {
        while (reader.TokenType == JsonToken.Comment)
        {
            if (!reader.Read())
                throw JsonSerializationExceptionCreate(reader, "Unexpected end when reading IDictionary<string, object>.");
        }

        switch (reader.TokenType)
        {
            case JsonToken.StartObject:
                return ReadObject(reader);
            case JsonToken.StartArray:
                return ReadList(reader);
            default:
                if (IsPrimitiveToken(reader.TokenType))
                    return reader.Value;

                throw JsonSerializationExceptionCreate(reader, string.Format(CultureInfo.InvariantCulture, "Unexpected token when converting IDictionary<string, object>: {0}", reader.TokenType));
        }
    }

    private object ReadList(JsonReader reader)
    {
        List<object> list = new List<object>();

        while (reader.Read())
        {
            switch (reader.TokenType)
            {
                case JsonToken.Comment:
                    break;
                default:
                    object v = ReadValue(reader);

                    list.Add(v);
                    break;
                case JsonToken.EndArray:
                    return list;
            }
        }

        throw JsonSerializationExceptionCreate(reader, "Unexpected end when reading IDictionary<string, object>.");
    }

    private object ReadObject(JsonReader reader)
    {
        IDictionary<string, object> dictionary = new Dictionary<string, object>();
        while (reader.Read())
        {
            switch (reader.TokenType)
            {
                case JsonToken.PropertyName:
                    string propertyName = reader.Value.ToString();

                    if (!reader.Read())
                        throw JsonSerializationExceptionCreate(reader, "Unexpected end when reading IDictionary<string, object>.");

                    object v = ReadValue(reader);

                    dictionary[propertyName] = v;
                    break;
                case JsonToken.Comment:
                    break;
                case JsonToken.EndObject:
                    return dictionary;
            }
        }

        throw JsonSerializationExceptionCreate(reader, "Unexpected end when reading IDictionary<string, object>.");
    }

    //based on internal Newtonsoft.Json.JsonReader.IsPrimitiveToken
    internal static bool IsPrimitiveToken(JsonToken token)
    {
        switch (token)
        {
            case JsonToken.Integer:
            case JsonToken.Float:
            case JsonToken.String:
            case JsonToken.Boolean:
            case JsonToken.Undefined:
            case JsonToken.Null:
            case JsonToken.Date:
            case JsonToken.Bytes:
                return true;
            default:
                return false;
        }
    }

    // based on internal Newtonsoft.Json.JsonSerializationException.Create
    private static JsonSerializationException JsonSerializationExceptionCreate(JsonReader reader, string message, Exception ex = null)
    {
        return JsonSerializationExceptionCreate(reader as IJsonLineInfo, reader.Path, message, ex);
    }

    // based on internal Newtonsoft.Json.JsonSerializationException.Create
    private static JsonSerializationException JsonSerializationExceptionCreate(IJsonLineInfo lineInfo, string path, string message, Exception ex)
    {
        message = JsonPositionFormatMessage(lineInfo, path, message);

        return new JsonSerializationException(message, ex);
    }

    // based on internal Newtonsoft.Json.JsonPosition.FormatMessage
    internal static string JsonPositionFormatMessage(IJsonLineInfo lineInfo, string path, string message)
    {
        if (!message.EndsWith(Environment.NewLine))
        {
            message = message.Trim();

            if (!message.EndsWith(".", StringComparison.Ordinal))
                message += ".";

            message += " ";
        }

        message += string.Format(CultureInfo.InvariantCulture, "Path '{0}'", path);

        if (lineInfo != null && lineInfo.HasLineInfo())
            message += string.Format(CultureInfo.InvariantCulture, ", line {0}, position {1}", lineInfo.LineNumber, lineInfo.LinePosition);

        message += ".";

        return message;
    }
}

令人恼火的是,如果你想使用默认的模型绑定器,看起来你必须使用数字索引值,就像表单发布一样。

请参阅本文的以下摘录 http://msdn.microsoft.com/en-us/magazine/hh781022.aspx :

虽然它有点违反直觉,但JSON请求具有相同的特性。 要求也必须遵守表单后命名语法。 以先前单价的JSON有效负载为例 收集。此数据的纯JSON数组语法为 表示为:

[ 
  { "Code": "USD", "Amount": 100.00 },
  { "Code": "EUR", "Amount": 73.64 }
]

但是,默认值提供者和模型绑定器需要 要表示为JSON表单发布的数据:

{
  "UnitPrice[0].Code": "USD",
  "UnitPrice[0].Amount": 100.00,

  "UnitPrice[1].Code": "EUR",
  "UnitPrice[1].Amount": 73.64
}

复杂的对象集合场景可能是其中一个 由于 语法对所有开发人员来说不一定是显而易见的。然而,一旦你 学习发布复杂集合的相对简单的语法, 这些情况变得更容易处理。

你可以使用 Tiny-JSON

string json = "{\"key1\":\"value1\", \"key2\":\"value2\"}";
IDictionary<string, string> dict = Tiny.Json.Decode<Dictionary<string, string>>(json);

游戏进行得有点晚了,但上面的解决方案中没有一个能为我指明一个纯粹而简单的.NET解决方案的方向,而不是JSON.NET解决方案。就这样,结果很简单。下面是一个完整的运行示例,说明如何使用标准的.NET JSON序列化来完成它,该示例在根对象和子对象中都有字典。

金色的子弹就是这只猫,将设置作为序列化程序的第二个参数进行解析:

DataContractJsonSerializerSettings settings =
                       new DataContractJsonSerializerSettings();
                    settings.UseSimpleDictionaryFormat = true;

完整代码如下:

using System;
using System.Collections.Generic;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;

    namespace Kipon.dk
    {
        public class JsonTest
        {
            public const string EXAMPLE = @"{
                ""id"": ""some id"",
                ""children"": {
                ""f1"": {
                    ""name"": ""name 1"",
                    ""subs"": {
                    ""1"": { ""name"": ""first sub"" },
                    ""2"": { ""name"": ""second sub"" }
                    }
                },
                ""f2"": {
                    ""name"": ""name 2"",
                    ""subs"": {
                    ""37"": { ""name"":  ""is 37 in key""}
                    }
                }
                }
            }
            ";

            [DataContract]
            public class Root
            {
                [DataMember(Name ="id")]
                public string Id { get; set; }

                [DataMember(Name = "children")]
                public Dictionary<string,Child> Children { get; set; }
            }

            [DataContract]
            public class Child
            {
                [DataMember(Name = "name")]
                public string Name { get; set; }

                [DataMember(Name = "subs")]
                public Dictionary<int, Sub> Subs { get; set; }
            }

            [DataContract]
            public class Sub
            {
                [DataMember(Name = "name")]
                public string Name { get; set; }
            }

            public static void Test()
            {
                var array = System.Text.Encoding.UTF8.GetBytes(EXAMPLE);
                using (var mem = new System.IO.MemoryStream(array))
                {
                    mem.Seek(0, System.IO.SeekOrigin.Begin);
                    DataContractJsonSerializerSettings settings =
                       new DataContractJsonSerializerSettings();
                    settings.UseSimpleDictionaryFormat = true;

                    var ser = new DataContractJsonSerializer(typeof(Root), settings);
                    var data = (Root)ser.ReadObject(mem);
                    Console.WriteLine(data.Id);
                    foreach (var childKey in data.Children.Keys)
                    {
                        var child = data.Children[childKey];
                        Console.WriteLine(" Child: " + childKey + " " + child.Name);
                        foreach (var subKey in child.Subs.Keys)
                        {
                            var sub = child.Subs[subKey];
                            Console.WriteLine("   Sub: " + subKey + " " + sub.Name);
                        }
                    }
                }
            }
        }
    }

我建议使用 System.Runtime.Serialization.Json 这是.NET 4.5的一部分。

[DataContract]
public class Foo
{
   [DataMember(Name = "data")]
   public Dictionary<string,string> Data { get; set; }
}

然后这样使用:

var serializer = new DataContractJsonSerializer(typeof(List<Foo>));
var jsonParams = @"{""data"": [{""Key"":""foo"",""Value"":""bar""}] }";
var stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonParams));

var obj = serializer.ReadObject(stream);
Console.WriteLine(obj);