答案

Question

我试图将json反序列化为List<struct> - 但我的对象始终为null。源JSON中的数据类型似乎是正确的，我的代码不会抛出任何错误，所以我完全不知道为什么它不起作用。

我正在学习的课程：

public class SystemStatusRules
{
    public struct EmailItem 
    {
        public int EmailSubject_Id;
        public bool IsSubject;
        public string Email_String; 
        public int StatusCode;
    }
    public List<EmailItem> EmailItems {get; set;}
}

我的JSON：

{"EmailItems":[
    {"EmailSubject_Id":16,"IsSubject":true,"Email_String":"Cube Build Successful","StatusCode":0},
    {"EmailSubject_Id":17,"IsSubject":true,"Email_String":"Cube Build Failure","StatusCode":0}
]}

最后，我的反序列化代码：

[HttpPost]
public bool SetAllStatusRules(string ruleList )
{
    SystemStatusRules subjectRules =
        JsonConvert.DeserializeObject<SystemStatusRules>(ruleList);
}

万一你需要它，我的序列化代码：

objArray.push({ EmailSubject_Id: SubjectId, IsSubject: IsSubject,
                Email_String: EmailSubject, StatusCode: status });
objArray = { EmailItems: objArray };
var rulesJSON = JSON.stringify(objArray);
$.ajax({
    url: "Management/SetAllStatusRules",
        type: 'POST',
        data: 'ruleList='+rulesJSON,
        success: function (result) {
            MyResultFunction(result);
      }
  });

修改

这与我投射到一个物体有关。以下代码具有正确填充的subjectRules变量。但是ssr为空。

object subjectRules = JsonConvert.DeserializeObject<SystemStatusRules>(StatusRules);
SystemStatusRules ssr = (SystemStatusRules)subjectRules;

我不知道出了什么问题，但是反序列化为var允许我使用带有数据的对象作为解决方法。

Answer 1

答案

这是a working fiddle for you。修改：您不需要[FromBody]。它只是有效。您的代码显然没有任何问题。

查看

<html lang="en">
    <head></head>
    <body>
        <div class="container"></div>
        <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
        <script type="text/javascript">

$(function(){

    var container = $(".container");
    var objArray = [];

    objArray.push({ 
        EmailSubject_Id: "0", 
        IsSubject: "false",
        Email_String: "My Email", 
        StatusCode: "0" });

    objArray = { EmailItems: objArray };    

    var rulesJSON = JSON.stringify(objArray);
    $.ajax({
        url: '@Url.RouteUrl(new{ action="SetAllStatusRules", controller="Home"})',
        type: 'POST',
        data: 'ruleList='+rulesJSON                     
        })
    .done(function (d) { container.html(d); } );

});

        </script>
    </body>
</html>

控制器

using System.Web.Mvc;
using Newtonsoft.Json;

namespace HelloWorldMvcApp
{
    public class HomeController : Controller
    {
        [System.Web.Mvc.HttpGetAttribute]
        public ActionResult Index()
        {
            return View();
        }

        [System.Web.Mvc.HttpPost]
        public string SetAllStatusRules(string ruleList)
        {
            SystemStatusRules subjectRules = 
                JsonConvert.DeserializeObject<SystemStatusRules>(ruleList);
            return subjectRules.EmailItems[0].Email_String;
        }
    }
}

模型

using System.Collections.Generic;

namespace HelloWorldMvcApp
{
    public class SystemStatusRules
    {
        public struct EmailItem
        {
            public int EmailSubject_Id;
            public bool IsSubject;
            public string Email_String;
            public int StatusCode;
        }

        public List<EmailItem> EmailItems { get; set; }
    }
}

控制台应用程序（最初测试）

它似乎与您的JavaScript POST及其提供给服务器的有效负载有关。那是因为以下工作（see fiddle）：

public class Program
{
    public static void Main()
    {
        var json = @"
{'EmailItems':[
    {'EmailSubject_Id':16,'IsSubject':true,'Email_String':'Cube Build Successful','StatusCode':0},
    {'EmailSubject_Id':17,'IsSubject':true,'Email_String':'Cube Build Failure','StatusCode':0}
]}";
        var p = new Program();
        p.SetAllStatusRules(json);
    }

    public bool SetAllStatusRules(string ruleList)
    {
        SystemStatusRules subjectRules = JsonConvert.DeserializeObject<SystemStatusRules>(ruleList);
        Console.WriteLine(subjectRules.EmailItems.Count.ToString());
        Console.WriteLine(subjectRules.EmailItems[0].Email_String);
        return true;
    }
}

public class SystemStatusRules
{
    public struct EmailItem
    {
        public int EmailSubject_Id;
        public bool IsSubject;
        public string Email_String;
        public int StatusCode;
    }
    public List<EmailItem> EmailItems { get; set; }
}

反序列化列表<struct>

1 个答案:

答案

查看

控制器

模型

控制台应用程序（最初测试）