如何解析在MVC Controller中收到的JSON [英] How to parse JSON received in MVC Controller

问题描述

我有一个JSON文件，通过来自客户端的POST请求发送到MVC控制器。由于没有直接的方法在C＃中存储JSON，我正在尝试创建存储数据的模型。以下是JSON的结构：

I have a JSON file that is being sent to an MVC controller via a POST request from the client side. Since there isn't a direct way to store JSON in C#, I'm trying to create models to store the data. Here is the structure of the JSON:

{
    "SubscriptionsType1": {
        "Obj1": {
            "Value1": "3454234",
            "Value2": "345643564",
            "Value3": "665445",
            "Value4": "True"
        },
        "Obj2": {
            "Value1": "3454234",
            "Value2": "345643564",
            "Value3": "665445",
            "Value4": "True"
        },
        "Obj3": {
            "Value1": "3454234",
            "Value2": "345643564",
            "Value3": "665445",
            "Value4": "True"
        }
    },
"SubscriptionsType2": {
                "Obj1": {
                    "Value1": "3667635",
                    "Value2": "34563456",
                    "Value3": "234545",
                    "Value4": "False"
                },
                "Obj2": {
                    "Value1": "97865",
                    "Value2": "356356",
                    "Value3": "665757445",
                    "Value4": "True"
                },
                "Obj3": {
                    "Value1": "3454234",
                    "Value2": "345643564",
                    "Value3": "665445",
                    "Value4": "False"
                }
            },
    //etc..

    }

模型如下：

  public class RootObject {
        public IEnumerable<SubscriptionObj> Subscriptions { get; set; }
}


public class Subscriptions {
    IEnumerable<SubscriptionObj> objs;
}


public class SubscriptionObj
{
    public Int64 Value1 {get;set;}
    public Int64 Value2 {get;set;}
    public Int64 Value3 {get;set;}
    public Boolean Value4 {get;set;}
}

出于某种原因，如果我使用此结构创建模型类，则从控制器传递JSON对象后，根对象仍为null。
但是，当我显式创建属性来存储JSON对象的每个值时，它可以工作。由于JSON对象没有固定数量的元素，因此我需要一种动态存储每个属性的方法。 如何做到这一点？

For some reason, if I create the model classes with this structure, the Root Object is still null after the it is passed the JSON object from the controller. However, when I explicitly create attributes to store each value of the JSON object, it works. Since the JSON object doesn't have a fixed number of elements, I need a way to dynamically store each attribute. How can this be done?

推荐答案

由于根对象和订阅中的密钥不同，你应该使用字典。

Because of the varying key in the root object and subscriptions, you should use a dictionary.

public class RootObject : Dictionary<string, Subscriptions> { }

public class Subscriptions : Dictionary<string, SubscriptionObj> { }

public class SubscriptionObj {
    public Int64 Value1 {get;set;}
    public Int64 Value2 {get;set;}
    public Int64 Value3 {get;set;}
    public Boolean Value4 {get;set;}
}

上面会序列化到OP中的JSON，但你松散了强类型的键/属性名称

The above would serialize to the JSON in the OP but you loose the strongly typed keys/property names

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