MVC控制器中的嵌套Json数组

本文关键字：Json 数组 嵌套 控制器 MVC | 更新日期: 2023-09-27 18:17:10

这个问题很傻。但我想不明白。

在c# MVC控制器动作中，我需要为测试目的建模一个Json数组。

但是这显示了编译错误，而不是有效的Json:

var result = {
    "controllerId": "controller1",
    "controllerName": "ControllerOne"
};

但是这是完全有效的:

var scheduleResult = new[] 
{
   new { scheduleId = "schedule1",scheduleName = "scheduleOne"},
   new { scheduleId = "schedule2",scheduleName = "scheduleTwo"}
};

还有如何编写嵌套Json数组:

I tried:

var scheduleResult = new[] 
{
    new { scheduleId = "schedule1",scheduleName = "scheduleOne",new[]{ new {doorId="Door1",doorName="DoorOne"}, new { doorId = "Door2", doorName = "DoorTwo" } } },
    new { scheduleId = "schedule2",scheduleName = "scheduleTwo"}
};

但是显示语法错误。

我需要在该数组的每个元素中嵌套数组。

提前感谢。

MVC控制器中的嵌套Json数组

c#不支持你的写作方式。你不能只在c#中输入JSON就指望它能正常工作。你可以尝试使用匿名类型:

 var result = new 
 {
     controllerId = "controller1",
     controllerName = "ControllerOne",
     myArray = new [] 
     {
          "a",
          "b"
     }
 };

如果您将其作为API调用的结果返回，则将其转换为JSON，没有问题。

你正在谈论的嵌套数组不工作，因为你需要给他们一个名字，你不能有数组属性没有名字。

为什么不使用Dictionary<TKey, TValue>和Newtonsoft.Json呢?

简单的json: 

IDictionary<string, string> obj = new Dictionary<string, string>();
obj.Add("controllerId", "controller1");
obj.Add("controllerName", "ControllerOne");
// {"controllerId":"controller1","controllerName":"ControllerOne"}
string json = JsonConvert.SerializeObject(obj);
嵌套json: 

IList<string> obj = new List<string>();
IDictionary<string, string> first = new Dictionary<string, string>();
first.Add("scheduleId ", "schedule1");
first.Add("scheduleName", "scheduleOne");
IDictionary<string, string> second = new Dictionary<string, string>();
second.Add("scheduleId ", "schedule2");
second.Add("scheduleName", "scheduleTwo");
string first_json = JsonConvert.SerializeObject(first);
string second_json = JsonConvert.SerializeObject(second);
obj.Add(first_json);
obj.Add(second_json);
// ["{'"scheduleId '":'"schedule1'",'"scheduleName'":'"scheduleOne'"}","{'"scheduleId '":'"schedule2'",'"scheduleName'":'"scheduleTwo'"}"]
string json = JsonConvert.SerializeObject(obj);

首先，我们应该使用与返回类型相同的模式创建模型类

 public class ScheduleModel
    {
        public List<Schedule> ScheduleList { get; set; }
    }
    public class Schedule
    {
        public int ScheduleId { get; set; }
        public string ScheduleName { get; set; }
        public List<Door> DoorList { get; set; }
    }
    public class Door
    {
        public int DoorId { get; set; }
        public string DoorName { get; set; }
    }

现在在控制器Action中创建测试数据

List<Door> doorList = new List<Door>();
            doorList.Add(new Door{DoorId = "Door1",DoorName = "DoorOne"});
            doorList.Add(new Door{DoorId = "Door2",DoorName = "DoorTwo"});
            List<Schedule> scheduleList = new List<Schedule>();
            scheduleList.Add(new Schedule{
                ScheduleId = "schedule1",
                ScheduleName = "scheduleOne",
                DoorList = doorList
            });
            scheduleList.Add(new Schedule
            {
                ScheduleId = "schedule2",
                ScheduleName = "scheduleTwo",
            });
            return Json(scheduleList, JsonRequestBehavior.AllowGet);

如果这个答案对你有益，请标记为答案。

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