C#中的JSON解析问题

Question

我使用下面的代码来解析JSON。我有例外了。

using System.Collections.Generic;
using Newtonsoft.Json;
using RestSharp;
using WebAutomation.BDD.Data;

namespace WebAutomation.Utils
{
    public class RestApi
    {
        private static IRestResponse HttpGetResponse(string endPoint)
        {
            var client = new RestClient(endPoint);
            var request = new RestRequest(Method.GET);
            return client.Execute(request);
        }

        public static FeaturedMenuItems GetFeaturedMenuItems()
        {
            var a = HttpGetResponse("http://<DOMAIN>/api/web/menu/quick");
            return JsonConvert.DeserializeObject<FeaturedMenuItems>(a.Content);
        }
    }
}

我使用下面的类来解析它：

using System.Collections.Generic;

namespace WebAutomation.BDD.Data
{
    public class FeaturedMenu
    {
        public string MenuItemName { get; set; }
        public string MenuItemName_en { get; set; }
        public string MenuItemName_zh { get; set; }
        public string url { get; set; }
        public string LastModifiedDate { get; set; }
    }

    public class FeaturedMenuItems
    {
        public List<FeaturedMenu> Featured_Menu { get; set; }
    }
}

这是我得到的JSON：

[
  {
    "Featured_Menu": [
      {
        "MenuItemName": "Today's Racing",
        "MenuItemName-en": "Today's Racing",
        "MenuItemName-zh": "今日赛事",
        "url": "/racing-betting/today",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "Tomorrow's Racing",
        "MenuItemName-en": "Tomorrow's Racing",
        "MenuItemName-zh": "明日赛事",
        "url": "/racing-betting/tomorrow",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "Upcoming Sports",
        "MenuItemName-en": "Upcoming Sports",
        "MenuItemName-zh": "近期赛事",
        "url": "/sports-betting/next-up",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "Live Centre",
        "MenuItemName-en": "Live Centre",
        "MenuItemName-zh": "即场投注",
        "url": "/live-in-play-betting",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "Multi Express",
        "MenuItemName-en": "Multi Express",
        "MenuItemName-zh": "Multi Express",
        "url": "/multi-express",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "AFL Finals",
        "MenuItemName-en": "AFL Finals",
        "MenuItemName-zh": "AFL Finals",
        "url": "/sports-betting/australian-rules/afl",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "NRL Finals",
        "MenuItemName-en": "NRL Finals",
        "MenuItemName-zh": "NRL Finals",
        "url": "/sports-betting/rugby-league/nrl/nrl-matches",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "MLB Matches",
        "MenuItemName-en": "MLB Matches",
        "MenuItemName-zh": "MLB Matches",
        "url": "/sports-betting/baseball/major-league-baseball/mlb-matches",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "NFL Matches",
        "MenuItemName-en": "NFL Matches",
        "MenuItemName-zh": "NFL Matches",
        "url": "/sports-betting/american-football/nfl/nfl-matches/",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "EPL Matches",
        "MenuItemName-en": "EPL Matches",
        "MenuItemName-zh": "EPL Matches",
        "url": "/sports-betting/soccer/united-kingdom/english-premier-league-matches",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "UEFA Europa League",
        "MenuItemName-en": "UEFA Europa League",
        "MenuItemName-zh": "UEFA Europa League",
        "url": "/sports-betting/soccer/uefa-competitions/europa-league-matches/",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "Golovkin v Alvarez",
        "MenuItemName-en": "Golovkin v Alvarez",
        "MenuItemName-zh": "Golovkin v Alvarez",
        "url": "/sports-betting/boxing/bouts/fights/gennady-golovkin-v-saul-alvarez-20170917-600896-21745986",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "Makybe Diva Stakes",
        "MenuItemName-en": "Makybe Diva Stakes",
        "MenuItemName-zh": "Makybe Diva Stakes",
        "url": "/racing-betting/horse-racing/flemington/20170916/race-7-704632-23756853",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "The Shorts",
        "MenuItemName-en": "The Shorts",
        "MenuItemName-zh": "The Shorts",
        "url": "/racing-betting/horse-racing/randwick/20170916/race-7-704601-23756572",
        "LastModifiedDate": "20170914111417"
      },
      {
        "MenuItemName": "Lotto",
        "MenuItemName-en": "Lotto",
        "MenuItemName-zh": "Lotto",
        "url": "/http://crownlotto.com.au",
        "LastModifiedDate": "20170914111417"
      }
    ]
  }
]

我得到以下例外：

Newtonsoft.Json.JsonSerializationException：‘不能将当前的JSON数组(例如，1,2,3)反序列化为'WebAutomation.BDD.Data.FeaturedMenuItems’类型，因为该类型需要一个JSON对象(例如，{“名称”：“值”})才能正确地反序列化。要修复此错误，要么将JSON更改为JSON对象(例如，{"name":"value"})，要么将反序列化类型更改为数组，或者将实现集合接口(例如ICollection、IList)的类型改为可以从JSON数组反序列化的列表。还可以将JsonArrayAttribute添加到该类型中，以强制它从JSON数组中反序列化。路径''，第1行，位置1‘

我想不出这个问题。任何帮助都将不胜感激。

Answer 1

您正在尝试反序列化一个FeaturedMenuItems数组，而不是一个FeaturedMenuItems。试着使用：

JsonConvert.DeserializeObject<FeaturedMenuItems[]>(a.Content)