反序列化嵌套的json在c#中返回空值答案

【问题标题】：deserialize nested json returns null value in c#反序列化嵌套的json在c#中返回空值
【发布时间】：2017-07-30 00:46:55
【问题描述】：

我有如下 json 对象：

我的json如下：

{
    "MTONGUE": "Hindi",
    "REGISTERED": "Y/N",
    "MULTI_PROFILE": "Y/N",
    "PAID": "Y/N",
    "INFO_DTOFBIRTH ": "2010-01-01",
    "INFO_GENDER": "Male/Femal",
    "INFO_MSTATUS": "Married",
    "INFO_RELIGION": "Hindu",
    "RENEWAL": "Y/N",
    "RENEWAL_DAYS": "10",
    "DISCOUNT_TEXT": "Flat/Upto",
    "DISCOUNT_PERCENT": "10",
    "MEMBERSHIP": {
        "P": {
            "P3": {
                "NAME": "eRishta",
                "CALL": "75",
                "DURATION": "3",
                "OFFER_PRICE": "2000"
            },
            "P6": {
                "NAME": "eRishta",
                "CALL": "75",
                "DURATION": "6",
                "OFFER_PRICE": "4000"
            },
            "P12": {
                "NAME": "eRishta",
                "CALL": "75",
                "DURATION": "12",
                "OFFER_PRICE": "6000"
            }
        },
        "C": {
            "C3": {
                "NAME": "eValue",
                "CALL": "75",
                "DURATION": "3",
                "OFFER_PRICE": "2000"
            },
            "C6": {
                "NAME": "eValue",
                "CALL": "75",
                "DURATION": "6",
                "OFFER_PRICE": "4000"
            },
            "C12": {
                "NAME": "eValue",
                "CALL": "75",
                "DURATION": "12",
                "OFFER_PRICE": "6000"
            }
        },
        "NCP": {
            "NCP3": {
                "NAME": "eAdvantage",
                "CALL": "75",
                "DURATION": "3",
                "OFFER_PRICE": "2000"
            },
            "NCP6": {
                "NAME": "eAdvantage",
                "CALL": "75",
                "DURATION": "6",
                "OFFER_PRICE": "4000"
            },
            "NCP12": {
                "NAME": "eAdvantage",
                "CALL": "75",
                "DURATION": "12",
                "OFFER_PRICE": "6000"
            }
        }
    }
}

我需要知道这个 json 的相关类结构。

我有与

类似的 C# 类

 public class results
        {
            public string MTONGUE { get; set; }
            public string REGISTERED { get; set; }
            public string MULTI_PROFILE { get; set; }
            public string PAID { get; set; }
            public string INFO_DTOFBIRTH { get; set; }
            public string INFO_GENDER { get; set; }
            public string INFO_MSTATUS { get; set; }
            public string INFO_RELIGION { get; set; }
            public string RENEWAL { get; set; }
            public string RENEWAL_DAYS { get; set; }
            public string DISCOUNT_TEXT { get; set; }
            public string DISCOUNT_PERCENT { get; set; }
            public List<P> P { get; set; }
        }
        public class P
        {
           public Dictionary<string, List<PC>> PC { get; set; }
        }
        public class PC
        {
            public string NAME { get; set; }
            public string Call { get; set; }
            public string DURATION { get; set; }
            public string OFFER_PRICE { get; set; }
        }

我尝试反序列化为：

        JavaScriptSerializer serializer = new JavaScriptSerializer();
        results obj = serializer.Deserialize<results>(json);

但是嵌套低一级的所有内容都返回一个空值。为什么嵌套的 Json 返回 null 值？

【问题讨论】：

您的 JSON 无效。请检查您的 JSON。
正如 Mohit 所说，您的 JSON 无效，并且与您提到的类结构不匹配。您可以验证您的 JSON @jsonlint.com

标签： c# json null

【解决方案1】：

你不需要 P 类。

改变

public List<P> P { get; set; }

到

public Dictionary<string,Dictionary<string,PC>> MEMBERSHIP { get; set; }

你可以这样访问..

results obj = serializer.Deserialize<results>(str);
var p = obj.MEMBERSHIP["P"]["P12"].DURATION;
var c = obj.MEMBERSHIP["C"]["C12"].DURATION;
var npc = obj.MEMBERSHIP["NCP"]["NCP12"].DURATION;

【讨论】：

【解决方案2】：

首先你的 JSON 无效。请找到有效的 JSON

{
    "MTONGUE": "Hindi",
    "REGISTERED": "Y\/N",
    "MULTI_PROFILE": "Y\/N",
    "PAID": "Y\/N",
    "INFO_DTOFBIRTH ": "2010-01-01",
    "INFO_GENDER": "Male\/Femal",
    "INFO_MSTATUS": "Married",
    "INFO_RELIGION": "Hindu",
    "RENEWAL": "Y\/N",
    "RENEWAL_DAYS": "10",
    "DISCOUNT_TEXT": "Flat\/Upto",
    "DISCOUNT_PERCENT": "10",
    "MEMBERSHIP": {
        "P": {
            "P3": {
                "NAME": "eRishta",
                "CALL": "75",
                "DURATION": "3",
                "OFFER_PRICE": "2000"
            },
            "P6": {
                "NAME": "eRishta",
                "CALL": "75",
                "DURATION": "6",
                "OFFER_PRICE": "4000"
            },
            "P12": {
                "NAME": "eRishta",
                "CALL": "75",
                "DURATION": "12",
                "OFFER_PRICE": "6000"
            }
        },
        "C3": {
            "NAME": "eValue",
            "CALL": "75",
            "DURATION": "3",
            "OFFER_PRICE": "2000"
        },
        "C6": {
            "NAME": "eValue",
            "CALL": "75",
            "DURATION": "6",
            "OFFER_PRICE": "4000"
        },
        "C12": {
            "NAME": "eValue",
            "CALL": "75",
            "DURATION": "12",
            "OFFER_PRICE": "6000"
        }
    },
    "NCP3": {
        "NAME": "eAdvantage",
        "CALL": "75",
        "DURATION": "3",
        "OFFER_PRICE": "2000"
    },
    "NCP6": {
        "NAME": "eAdvantage",
        "CALL": "75",
        "DURATION": "6",
        "OFFER_PRICE": "4000"
    },
    "NCP12": {
        "NAME": "eAdvantage",
        "CALL": "75",
        "DURATION": "12",
        "OFFER_PRICE": "6000"
    }


}

JSON 的 C# 类

public class P3
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class P6
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class P12
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class P
{
    public P3 P3 { get; set; }
    public P6 P6 { get; set; }
    public P12 P12 { get; set; }
}

public class C3
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class C6
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class C12
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class MEMBERSHIP
{
    public P P { get; set; }
    public C3 C3 { get; set; }
    public C6 C6 { get; set; }
    public C12 C12 { get; set; }
}

public class NCP3
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class NCP6
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class NCP12
{
    public string NAME { get; set; }
    public string CALL { get; set; }
    public string DURATION { get; set; }
    public string OFFER_PRICE { get; set; }
}

public class RootObject
{
    public string MTONGUE { get; set; }
    public string REGISTERED { get; set; }
    public string MULTI_PROFILE { get; set; }
    public string PAID { get; set; }
    public string __invalid_name__INFO_DTOFBIRTH  { get; set; }
    public string INFO_GENDER { get; set; }
    public string INFO_MSTATUS { get; set; }
    public string INFO_RELIGION { get; set; }
    public string RENEWAL { get; set; }
    public string RENEWAL_DAYS { get; set; }
    public string DISCOUNT_TEXT { get; set; }
    public string DISCOUNT_PERCENT { get; set; }
    public MEMBERSHIP MEMBERSHIP { get; set; }
    public NCP3 NCP3 { get; set; }
    public NCP6 NCP6 { get; set; }
    public NCP12 NCP12 { get; set; }
}

【讨论】：