Question

我从twitter获得以下输出，我想只从输出中捕获以下细节。

屏幕名称
追随者计数
profile_image_url

问题是数据在嵌套的Json中。

Twitter API输出：

[{ "contributors" : null,
"coordinates" : null,
"created_at" : "Wed Jan 29 09:18:15 +0000 2014",
"favorite_count" : 0,
"favorited" : false,
"geo" : null,
"id" : 428457050109382657,
"id_str" : "428457050109382657",
"in_reply_to_screen_name" : null,
"in_reply_to_status_id" : null,
"in_reply_to_status_id_str" : null,
"in_reply_to_user_id" : null,
"in_reply_to_user_id_str" : null,
"lang" : "en",
"place" : null,
"user" : { "contributors_enabled" : false,
    "follow_request_sent" : null,
    "followers_count" : 218,
    "id" : 609465835,
    "id_str" : "609465835",
    "is_translation_enabled" : false,
    "is_translator" : false,
    "lang" : "en",
    "listed_count" : 3,
    "location" : "Still alpha as hell.",
    "verified" : false
  }
}, 
{ "contributors" : null,
"coordinates" : null,
"created_at" : "Wed Jan 29 09:18:15 +0000 2014",
"favorite_count" : 0,
"favorited" : false,
"geo" : null,
"id" : 428457050109382657,
"id_str" : "428457050109382657",
"in_reply_to_screen_name" : null,
"in_reply_to_status_id" : null,
"in_reply_to_status_id_str" : null,
"in_reply_to_user_id" : null,
"in_reply_to_user_id_str" : null,
"lang" : "en",
"place" : null,
"user" : { "contributors_enabled" : false,
    "follow_request_sent" : null,
    "followers_count" : 1218,
    "id" :33333,
    "id_str" : "609465835",
    "is_translation_enabled" : false,
    "is_translator" : false,
    "lang" : "en",
    "listed_count" : 3,
    "location" : "N",
    "verified" : false
  }
}]

，输出

Json Output

我正在尝试使用Newtonsoft Json反序列化，但失败了。

以下是代码：

        dynamic dynObj = JsonConvert.DeserializeObject(twitAuthResponse);
        foreach (var data in dynObj.user.data)
        {
            //Console.WriteLine("{0}", data.name);
            foreach (var fql in data.user)
            {
                foreach (JProperty keyValue in fql)
                {
                    Console.WriteLine("\t{0} : {1}", keyValue.Name, keyValue.Value);
                }
            }
        }

上面的代码返回错误“'Newtonsoft.Json.Linq.JArray'不包含'user'的定义。”

有人可以帮帮我吗？提前谢谢！

Answer 1

请查看以下文章：http://www.hanselman.com/blog/NuGetPackageOfTheWeek4DeserializingJSONWithJsonNET.aspx

您需要指定要反序列化的对象的类型，而不是使用动态。

类似于：var twitterJson = JsonConvert.DeserializeObject<TwitterResponse>(twitAuthResponse);

只要此.NET对象与JSON的架构匹配，它就会自动映射，您可以访问强类型的所有属性和值。

Answer 2

终于解决了，

dynamic stuff = JsonConvert.DeserializeObject(twitAuthResponse);

foreach (JObject item in stuff)
{
    foreach (JProperty trend in item["user"])
    {
        if (trend.Name == "name")
        {
             // GET NAME
        }
        else if (trend.Name == "followers_count")
        {
             // GET COUNT
        }
        else if (trend.Name == "profile_image_url")
        {
             // GET PROFILE URL
        }
    }
}

使用来自twitter的多个细节解析Json数据

2 个答案: