使用 RestSharp 检索 Freebase 主题

【问题标题】：Retrieving Freebase topics with RestSharp使用 RestSharp 检索 Freebase 主题
【发布时间】：2014-12-14 03:53:14
【问题描述】：

这是一个使用 RestSharp 检索 Freebase 主题的简单示例：

using System.Collections.Generic;
using RestSharp;
using RestSharp.Deserializers;

namespace Freebase
{
    public class FreebaseTopic
    {
        public string id { get; set; }
        public Dictionary<string, Dictionary<string, object>> property { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var restClient = new RestClient("https://www.googleapis.com");

            var restRequest = new RestRequest("freebase/v1/topic/m/0jdh5");

            var response = restClient.Execute(restRequest);

            var jsonDeserializer = new JsonDeserializer();

            var result = jsonDeserializer.Deserialize<FreebaseTopic>(response);
        }
    }
}

该示例有效。这是result 变量的一部分：

下面的例子：

using System.Collections.Generic;
using RestSharp;
using RestSharp.Deserializers;

namespace Freebase
{
    public class ValueSet
    {
        public string valuetype;
        public List<Dictionary<string, object>> values;
        public decimal count;
    }

    public class FreebaseTopic
    {
        public string id { get; set; }
        public Dictionary<string, ValueSet> property { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var restClient = new RestClient("https://www.googleapis.com");

            var restRequest = new RestRequest("freebase/v1/topic/m/0jdh5");

            var response = restClient.Execute(restRequest);

            var jsonDeserializer = new JsonDeserializer();

            var result = jsonDeserializer.Deserialize<FreebaseTopic>(response);
        }
    }
}

总是为其成员生成带有null、null 和0 的ValueSet 对象：

我更喜欢更接近第二个示例的模型。有没有办法让类似的东西正确反序列化？

这里是response的一部分：

{
 "id": "/m/0jdh5",
 "property": {
  "/award/award_nominated_work/award_nominations": {
   "valuetype": "compound",
   "values": [
    {
     "text": "Nebula Award for Best Novel - Frank Herbert - 1966 Nebula Awards - 1965 - jeff - Award Nomination",
     "lang": "en",
     "id": "/m/043zdj9",
     "creator": "/user/jeff",
     "timestamp": "2008-05-22T00:09:05.002Z",
     "property": {
      "/award/award_nomination/award": {
       "valuetype": "object",
       "values": [
        {
         "text": "Nebula Award for Best Novel",
         "lang": "en",
         "id": "/m/0265vt",
         "creator": "/user/jeff",
         "timestamp": "2008-05-22T00:09:05.002Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/award_nominee": {
       "valuetype": "object",
       "values": [
        {
         "text": "Frank Herbert",
         "lang": "en",
         "id": "/m/02xyl",
         "creator": "/user/jeff",
         "timestamp": "2008-05-22T00:09:05.002Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/ceremony": {
       "valuetype": "object",
       "values": [
        {
         "text": "1966 Nebula Awards",
         "lang": "en",
         "id": "/m/0zd3pyf",
         "creator": "/user/schema_bot",
         "timestamp": "2013-12-19T21:32:06.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/year": {
       "valuetype": "datetime",
       "values": [
        {
         "text": "1965",
         "lang": "",
         "value": "1965",
         "creator": "/user/jeff",
         "timestamp": "2008-05-22T00:07:56.000Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/attribution": {
       "valuetype": "object",
       "values": [
        {
         "text": "jeff",
         "lang": "en",
         "id": "/m/0jsf_k",
         "creator": "/user/jeff",
         "timestamp": "2008-05-22T00:07:56.000Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/type": {
       "valuetype": "object",
       "values": [
        {
         "text": "Award Nomination",
         "lang": "en",
         "id": "/award/award_nomination",
         "creator": "/user/jeff",
         "timestamp": "2008-05-22T00:07:56.000Z"
        }
       ],
       "count": 1.0
      }
     }
    },
    {
     "text": "Hugo Award for Best Novel - Frank Herbert - 1964 Hugo Awards - 1964 - earlye - Award Nomination",
     "lang": "en",
     "id": "/m/08f78v2",
     "creator": "/user/earlye",
     "timestamp": "2009-11-15T07:33:55.000Z",
     "property": {
      "/award/award_nomination/award": {
       "valuetype": "object",
       "values": [
        {
         "text": "Hugo Award for Best Novel",
         "lang": "en",
         "id": "/m/01yz0x",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/award_nominee": {
       "valuetype": "object",
       "values": [
        {
         "text": "Frank Herbert",
         "lang": "en",
         "id": "/m/02xyl",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/ceremony": {
       "valuetype": "object",
       "values": [
        {
         "text": "1964 Hugo Awards",
         "lang": "en",
         "id": "/m/0zd5b3c",
         "creator": "/user/schema_bot",
         "timestamp": "2013-12-19T18:54:50.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/year": {
       "valuetype": "datetime",
       "values": [
        {
         "text": "1964",
         "lang": "",
         "value": "1964",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.000Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/attribution": {
       "valuetype": "object",
       "values": [
        {
         "text": "earlye",
         "lang": "en",
         "id": "/m/08f784x",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.000Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/type": {
       "valuetype": "object",
       "values": [
        {
         "text": "Award Nomination",
         "lang": "en",
         "id": "/award/award_nomination",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.000Z"
        }
       ],
       "count": 1.0
      }
     }
    },
    {
     "text": "Hugo Award for Best Novel - Frank Herbert - 1966 Hugo Awards - 1966 - earlye - Award Nomination",
     "lang": "en",
     "id": "/m/08f78vb",
     "creator": "/user/earlye",
     "timestamp": "2009-11-15T07:33:55.001Z",
     "property": {
      "/award/award_nomination/award": {
       "valuetype": "object",
       "values": [
        {
         "text": "Hugo Award for Best Novel",
         "lang": "en",
         "id": "/m/01yz0x",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.001Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/award_nominee": {
       "valuetype": "object",
       "values": [
        {
         "text": "Frank Herbert",
         "lang": "en",
         "id": "/m/02xyl",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.001Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/ceremony": {
       "valuetype": "object",
       "values": [
        {
         "text": "1966 Hugo Awards",
         "lang": "en",
         "id": "/m/0zd5l6v",
         "creator": "/user/schema_bot",
         "timestamp": "2013-12-19T18:54:07.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_nomination/year": {
       "valuetype": "datetime",
       "values": [
        {
         "text": "1966",
         "lang": "",
         "value": "1966",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.001Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/attribution": {
       "valuetype": "object",
       "values": [
        {
         "text": "earlye",
         "lang": "en",
         "id": "/m/08f784x",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.001Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/type": {
       "valuetype": "object",
       "values": [
        {
         "text": "Award Nomination",
         "lang": "en",
         "id": "/award/award_nomination",
         "creator": "/user/earlye",
         "timestamp": "2009-11-15T07:33:55.001Z"
        }
       ],
       "count": 1.0
      }
     }
    }
   ],
   "count": 3.0
  },
  "/award/award_winning_work/awards_won": {
   "valuetype": "compound",
   "values": [
    {
     "text": "Hugo Award for Best Novel - Frank Herbert - 1966 Hugo Awards - 1966 - Freebase Data Team - Award Honor",
     "lang": "en",
     "id": "/m/03mlmsd",
     "creator": "/user/gardening_bot",
     "timestamp": "2008-02-18T23:43:14.004Z",
     "property": {
      "/award/award_honor/award": {
       "valuetype": "object",
       "values": [
        {
         "text": "Hugo Award for Best Novel",
         "lang": "en",
         "id": "/m/01yz0x",
         "creator": "/user/gardening_bot",
         "timestamp": "2008-02-18T23:43:14.004Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_honor/award_winner": {
       "valuetype": "object",
       "values": [
        {
         "text": "Frank Herbert",
         "lang": "en",
         "id": "/m/02xyl",
         "creator": "/user/jeff",
         "timestamp": "2008-03-20T22:04:32.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_honor/ceremony": {
       "valuetype": "object",
       "values": [
        {
         "text": "1966 Hugo Awards",
         "lang": "en",
         "id": "/m/0zd5l6v",
         "creator": "/user/annawantuch",
         "timestamp": "2013-11-29T21:02:51.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_honor/year": {
       "valuetype": "datetime",
       "values": [
        {
         "text": "1966",
         "lang": "",
         "value": "1966",
         "creator": "/user/gardening_bot",
         "timestamp": "2008-02-18T23:43:14.004Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/attribution": {
       "valuetype": "object",
       "values": [
        {
         "text": "Freebase Data Team",
         "lang": "en",
         "id": "/m/03jpr9s",
         "creator": "/user/gardening_bot",
         "timestamp": "2008-02-18T23:43:14.003Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/type": {
       "valuetype": "object",
       "values": [
        {
         "text": "Award Honor",
         "lang": "en",
         "id": "/award/award_honor",
         "creator": "/user/gardening_bot",
         "timestamp": "2008-02-18T23:43:14.004Z"
        }
       ],
       "count": 1.0
      }
     }
    },
    {
     "text": "Nebula Award for Best Novel - Frank Herbert - 1966 Nebula Awards - 1965 - tadhg - Award Honor",
     "lang": "en",
     "id": "/m/040wf_0",
     "creator": "/user/tadhg",
     "timestamp": "2008-04-28T23:08:57.001Z",
     "property": {
      "/award/award_honor/award": {
       "valuetype": "object",
       "values": [
        {
         "text": "Nebula Award for Best Novel",
         "lang": "en",
         "id": "/m/0265vt",
         "creator": "/user/tadhg",
         "timestamp": "2008-04-28T23:08:56.003Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_honor/award_winner": {
       "valuetype": "object",
       "values": [
        {
         "text": "Frank Herbert",
         "lang": "en",
         "id": "/m/02xyl",
         "creator": "/user/tadhg",
         "timestamp": "2008-04-28T23:08:59.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_honor/ceremony": {
       "valuetype": "object",
       "values": [
        {
         "text": "1966 Nebula Awards",
         "lang": "en",
         "id": "/m/0zd3pyf",
         "creator": "/user/pkarwat",
         "timestamp": "2013-11-29T13:14:09.000Z"
        }
       ],
       "count": 1.0
      },
      "/award/award_honor/year": {
       "valuetype": "datetime",
       "values": [
        {
         "text": "1965",
         "lang": "",
         "value": "1965",
         "creator": "/user/tadhg",
         "timestamp": "2008-04-28T23:08:57.001Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/attribution": {
       "valuetype": "object",
       "values": [
        {
         "text": "tadhg",
         "lang": "en",
         "id": "/m/01xrv19",
         "creator": "/user/tadhg",
         "timestamp": "2008-04-28T23:08:56.003Z"
        }
       ],
       "count": 1.0
      },
      "/type/object/type": {
       "valuetype": "object",
       "values": [
        {
         "text": "Award Honor",
         "lang": "en",
         "id": "/award/award_honor",
         "creator": "/user/tadhg",
         "timestamp": "2008-04-28T23:08:56.003Z"
        }
       ],
       "count": 1.0
      }
     }
    }
   ],
   "count": 2.0
  },
  "/book/book/characters": {
   "valuetype": "object",
   "values": [
    {
     "text": "Glossu Rabban",
     "lang": "en",
     "id": "/m/03pg1d",
     "creator": "/user/froderik",
     "timestamp": "2007-06-17T13:22:42.000Z"
    },
    {
     "text": "Hasimir Fenring",
     "lang": "en",
     "id": "/m/038wlp",
     "creator": "/user/froderik",
     "timestamp": "2007-06-17T13:21:07.000Z"
    },
    {
     "text": "Princess Irulan",
     "lang": "en",
     "id": "/m/036bx5",
     "creator": "/user/froderik",
     "timestamp": "2007-06-11T14:02:51.000Z"
    },
    {
     "text": "Liet-Kynes",
     "lang": "en",
     "id": "/m/03pg0p",
     "creator": "/user/froderik",
     "timestamp": "2007-06-07T19:42:52.000Z"
    },
    {
     "text": "Chani",
     "lang": "en",
     "id": "/m/023jgs",
     "creator": "/user/froderik",
     "timestamp": "2007-06-07T19:40:56.000Z"
    },
    {
     "text": "Feyd-Rautha",
     "lang": "en",
     "id": "/m/03pg3c",
     "creator": "/user/froderik",
     "timestamp": "2007-06-07T19:40:43.000Z"
    },
    {
     "text": "Vladimir Harkonnen",
     "lang": "en",
     "id": "/m/026h0",
     "creator": "/user/froderik",
     "timestamp": "2007-06-07T19:40:34.000Z"
    },
    {
     "text": "Lady Jessica",
     "lang": "en",
     "id": "/m/01ch4s",
     "creator": "/user/merge_bot",
     "timestamp": "2009-09-30T09:18:56.000Z"
    },
    {
     "text": "Leto Atreides I",
     "lang": "en",
     "id": "/m/014wvt",
     "creator": "/user/froderik",
     "timestamp": "2007-06-07T18:43:00.000Z"
    },
    {
     "text": "Paul Atreides",
     "lang": "en",
     "id": "/m/0cw39",
     "creator": "/user/froderik",
     "timestamp": "2007-06-07T18:38:45.000Z"
    }
   ],
   "count": 12.0
  },
  "/book/book/editions": {
   "valuetype": "object",
   "values": [
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vcdg_",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:20:46.002Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5pc",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:28.000Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5qg",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:31.000Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5qq",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:31.001Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5qz",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:31.002Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5r6",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:32.000Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5rh",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:32.001Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5rr",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:33.000Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5r_",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:33.001Z"
    },
    {
     "text": "Dune",
     "lang": "en",
     "id": "/m/04vc5s7",
     "creator": "/user/ts_bot",
     "timestamp": "2008-11-12T22:15:33.002Z"
    }
   ],
   "count": 55.0
  },
  "/book/book/genre": {
   "valuetype": "object",
   "values": [
    {
     "text": "Science Fiction",
     "lang": "en",
     "id": "/m/06n90",
     "creator": "/user/froderik",
     "timestamp": "2007-06-07T18:38:21.000Z"
    },
    {
     "text": "Fiction",
     "lang": "en",
     "id": "/m/02xlf",
     "creator": "/user/ts_bot",
     "timestamp": "2008-12-03T20:55:17.000Z"
    },
    {
     "text": "Planetary romance",
     "lang": "en",
     "id": "/m/04chq5",
     "creator": "/user/mw_template_bot",
     "timestamp": "2011-11-03T04:15:31.000Z"
    },
    {
     "text": "Military science fiction",
     "lang": "en",
     "id": "/m/01smf2",
     "creator": "/user/mw_template_bot",
     "timestamp": "2011-11-03T04:36:17.000Z"
    },
    {
     "text": "Philosophy",
     "lang": "en",
     "id": "/m/037mh8",
     "creator": "/user/mw_template_bot",
     "timestamp": "2011-11-03T04:45:38.001Z"
    },
    {
     "text": "Conspiracy fiction",
     "lang": "en",
     "id": "/m/0594kx",
     "creator": "/user/mw_template_bot",
     "timestamp": "2012-01-08T15:28:48.003Z"
    },
    {
     "text": "Adventure fiction",
     "lang": "en",
     "id": "/m/08sdrw",
     "creator": "/user/mw_template_bot",
     "timestamp": "2012-01-08T18:26:11.003Z"
    },
    {
     "text": "Psychological thriller",
     "lang": "en",
     "id": "/m/09blyk",
     "creator": "/user/wikimapper",
     "timestamp": "2013-02-26T22:00:22.001Z"
    },
    {
     "text": "Political thriller",
     "lang": "en",
     "id": "/m/02qfv5d",
     "creator": "/user/wikimapper",
     "timestamp": "2013-08-15T23:12:47.000Z"
    },
    {
     "text": "Fantasy",
     "lang": "en",
     "id": "/m/01hmnh",
     "creator": "/user/wikimapper",
     "timestamp": "2014-04-30T09:08:07.000Z"
    }
   ],
   "count": 10.0
  },
  "/book/written_work/author": {
   "valuetype": "object",
   "values": [
    {
     "text": "Frank Herbert",
     "lang": "en",
     "id": "/m/02xyl",
     "creator": "/user/gardening_bot",
     "timestamp": "2008-04-23T15:30:11.001Z"
    }
   ],
   "count": 1.0
  },
  "/book/written_work/copyright_date": {
   "valuetype": "datetime",
   "values": [
    {
     "text": "1965",
     "lang": "",
     "value": "1965",
     "creator": "/user/gardening_bot",
     "timestamp": "2008-03-14T03:45:20.018Z"
    }
   ],
   "count": 1.0
  },
  "/book/written_work/date_of_first_publication": {
   "valuetype": "datetime",
   "values": [
    {
     "text": "1965",
     "lang": "",
     "value": "1965",
     "creator": "/user/ewelinab",
     "timestamp": "2013-11-05T11:21:32.000Z"
    }
   ],
   "count": 1.0
  },
  "/book/written_work/date_written": {
   "values": [],
   "count": 0.0,
   "status": "has_value"
  },
...

【问题讨论】：

    标签： c# .net json.net restsharp freebase


    【解决方案1】：

    这似乎是来自 RestSharp dll 的 json 反序列化程序的内部反序列化问题。 使用Json.NET，完美运行：

    【讨论】：

    • 谢谢尤瓦尔！在您的测试用例中，您是否仍然使用 RestSharp 连接 Freebase API？
    • 是的，我只替换了反序列化位。我建议你看看HttpClient，这样你就可以完全消除对RestSharp的依赖
    【解决方案2】：

    这是基于 Yuval 回答的完整程序：

    using System.Collections.Generic;
using RestSharp;
using RestSharp.Deserializers;
using Newtonsoft.Json;

namespace Freebase
{
    public class ValueSet
    {
        public string valuetype;
        public List<Dictionary<string, object>> values;
        public double count;
    }

    public class FreebaseTopic
    {
        public string id { get; set; }
        public Dictionary<string, ValueSet> property { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var restClient = new RestClient("https://www.googleapis.com");

            var restRequest = new RestRequest("freebase/v1/topic/m/0jdh5");

            var response = restClient.Execute(restRequest);

            var result = JsonConvert.DeserializeObject<FreebaseTopic>(response.Content);

        }
    }
}

    【讨论】：

      猜你喜欢
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      • 1970-01-01
      相关资源
      最近更新 更多
      热门标签
      Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode