如何在具有多个嵌套模型的 C# 中解析 Json

查看 Newtonsoft 的 JSON 库。它可以让你直接反序列化为对象。以下是他们网站的示例：

public class Account
{
    public string Email { get; set; }
    public bool Active { get; set; }
    public DateTime CreatedDate { get; set; }
    public IList<string> Roles { get; set; }
}

Account account = JsonConvert.DeserializeObject<Account>(json);

如果你想避免直接反序列化到你的类中（例如，如果你要有私有变量），你可以做一些事情，比如：

Dictionary<string, object> jsonObject = JsonConvert.DeserializeObject<Dictionary<string, object>>(jsonString);

'myJsonResponse 是你的 json 字符串（检查你的 json，该行似乎不适合那里）DataStructure 2

Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse);

public class Carbohydrates
{
    public string unit { get; set; }
    public int value { get; set; }
}

public class DietryFibers
{
    public string unit { get; set; }
    public int value { get; set; }
}

public class Energy
{
    public string unit { get; set; }
    public int value { get; set; }
}

public class FatTotal
{
    public string unit { get; set; }
    public int value { get; set; }
}

public class Ingredient
{
    public string name { get; set; }
}

public class InsulinDelivery
{
    public int id { get; set; }
    public bool isDeleted { get; set; }
    public DateTime injectionTime { get; set; }
    public string insulinType { get; set; }
    public string unit { get; set; }
    public double value { get; set; }
}

public class Meal
{
    public int id { get; set; }
    public bool isDeleted { get; set; }
    public string image { get; set; }
    public string mealName { get; set; }
    public DateTime mealTime { get; set; }
    public List<Ingredient> ingredients { get; set; }
    public Nutrition nutrition { get; set; }
    public Weight weight { get; set; }
}

public class Nutrition
{
    public Carbohydrates carbohydrates { get; set; }
    public FatTotal fatTotal { get; set; }
    public Protein protein { get; set; }
    public DietryFibers dietryFibers { get; set; }
    public Energy energy { get; set; }
}

public class Protein
{
    public string unit { get; set; }
    public int value { get; set; }
}

public class Root
{
    public List<Meal> meals { get; set; }
    public List<InsulinDelivery> insulinDelivery { get; set; }
    public List<Workout> workouts { get; set; }
    public List<Step> steps { get; set; }
}

public class Step
{
    public DateTime startDate { get; set; }
    public DateTime endDate { get; set; }
    public string stepCount { get; set; }
}

public class Weight
{
    public string unit { get; set; }
    public int value { get; set; }
}

public class Workout
{
    public int id { get; set; }
    public bool isDeleted { get; set; }
    public DateTime startDate { get; set; }
    public DateTime endDate { get; set; }
    public string intensity { get; set; }
    public string workoutName { get; set; }
}

1. 序列化？反序列化？

请参考：什么是JSON中的反序列化和序列化？

TL;DR：Serialize=object 到 json，Deserialize=json 到 object。

2. 我们需要将json反序列化为对象吗？

如果您使用的是 ASP.NET / ASP.NET Core，应用程序将为您处理它，但您需要定义控制器，并告诉应用程序您期望什么输入，从类的意义上讲，它会自动反序列化为该类型。

Allen King 似乎已经提供了必要的类，因此您可以在此基础上构建控制器：

public class HelloWorldController : Controller
{
    public IActionResult SomeEndpoint(Root root)
    {
       // If input format is as expected, ASP.NET will deserialize the json into the root in this function's parameter.
       DoSomething(root); // you then use the root.
    }
}

MSDN 关于如何制作控制器