循环遍历JSON API调用中的List <objects>(CrunchBase)</objects>

时间:2012-01-18 21:58:37

标签: c# asp.net .net json visual-studio-2010

首先要让对任何想要达到这一点的人都有帮助: 我有一个API,我需要查询各种数据点(CrunchBase)我使用此工具http://json2csharp.com/#获取URL并为其生成类(返回与该JSON URL交互所需的类)接下来我需要消耗服务,进入Scott Hanselman救援,使用他的博客文章如何做到这一点http://www.hanselman.com/blog/NuGetPackageOfTheWeek4DeserializingJSONWithJsonNET.aspx接下来我把两者放在一起,并做了一些修补,让我查询CrunchBase API的部分信息是需要。目前我只是使用控制台应用程序编写逻辑,因为我打算稍后将其包装在.dll中,以便在向MVC站点提供信息的DataModel项目的DAL层中使用。

问题:这个到目前为止有效,除了我不知道我应该做什么来遍历从JSON端点返回的subObjects。我的代码是按照任何想要查看实现的人发布的(我在网上找不到一个示例,因为在C#中调用CrunchBase API)这个代码在我知道需要有一些foreach循环的地方评论但我发现的所有例子对我都不起作用。关于如何做到这一点的任何方向非常感谢。一个示例或代码更正将大大有助于我自己和其他任何人自己找出其余部分。另外一个问题,这可以在c#中完成,还是我需要使用其他东西 - 如果有的话,你可以推荐哪些资源进行额外的后续研究?

此代码中使用的端点是“http://api.crunchbase.com/v/1/company/”+ CompanyName +“。js”非常感谢您提前,我在尝试之前尝试了很长时间。

....
using System.Net;
using Newtonsoft.Json;

 namespace CrunchBase
 {
    class Program
    {
       static void Main(string[] args)
       {
           Console.WriteLine("Enter the name of a Company to look up:");
           string CompanyName = Console.ReadLine();

           var client = new WebClient();
           client.Headers.Add("User-Agent", "Nobody"); //my endpoint needs this...
           var response = client.DownloadString(new Uri("http://api.crunchbase.com/v/1/company/" + CompanyName +".js"));

           var j = JsonConvert.DeserializeObject<RootObject>(response);
           var f = JsonConvert.DeserializeObject<FundingRound>(response);
           var i = JsonConvert.DeserializeObject<Investment>(response);

               Console.WriteLine("Company Name: {0}", j.name);
               Console.WriteLine("Web Page: {0}", j.homepage_url);
               Console.WriteLine("Email Adress: {0}", j.email_address);
               Console.WriteLine("CruchBase Page: {0}", j.crunchbase_url);
               Console.WriteLine("Category: {0}", j.category_code);
               Console.WriteLine("Description: {0}", j.description);
               Console.WriteLine("Number of Employees: {0}", j.number_of_employees);
               Console.WriteLine("Year Founded: {0}", j.founded_year);
               // How would the best aproach be to loop through all of the Objects and print their properties?
               // By the way, if you run this it will hang a little bit because the FundingRound object is not 
               // properly implemented at the moment.
               Console.WriteLine("Funding Round Type: {0}", f.round_code);
               Console.WriteLine("Information Source: {0}", f.source_url);
               Console.WriteLine("Description: {0}", f.source_description);
               Console.WriteLine("Raised Amount: {0} {1}", f.raised_currency_code, f.raised_amount);
               // I take it the same technique used to loop  through the above "f" var object 
               // I would use again to loop through to the next nested Investment   object
               // and on down the chain fefore returning right back up....

               Console.ReadLine(); 
       }

       public class Image
       {
           public List<List<object>> available_sizes { get; set; }
           public object attribution { get; set; }
       }

       public class Person
       {
           public string first_name { get; set; }
           public string last_name { get; set; }
           public string permalink { get; set; }
       }

       public class Relationship
       {
           public bool is_past { get; set; }
           public string title { get; set; }
           public Person person { get; set; }
       }

       public class Provider
       {
           public string name { get; set; }
           public string permalink { get; set; }
       }

       public class Providership
       {
           public string title { get; set; }
           public bool is_past { get; set; }
           public Provider provider { get; set; }
       }

       public class FinancialOrg
       {
           public string name { get; set; }
           public string permalink { get; set; }
       }

       public class Person2
       {
           public string first_name { get; set; }
           public string last_name { get; set; }
           public string permalink { get; set; }
       }

       public class Investment
       {
           public object company { get; set; }
           public FinancialOrg financial_org { get; set; }
           public Person2 person { get; set; }
       }

       public class FundingRound
       {
           public string round_code { get; set; }
           public string source_url { get; set; }
           public string source_description { get; set; }
           public double raised_amount { get; set; }
           public string raised_currency_code { get; set; }
           public int funded_year { get; set; }
           public int funded_month { get; set; }
           public int funded_day { get; set; }
           public List<Investment> investments { get; set; }
       }

       public class Office
       {
           public string description { get; set; }
           public string address1 { get; set; }
           public string address2 { get; set; }
           public string zip_code { get; set; }
           public string city { get; set; }
           public string state_code { get; set; }
           public string country_code { get; set; }
           public object latitude { get; set; }
           public object longitude { get; set; }
       }

       public class VideoEmbed
       {
           public string embed_code { get; set; }
           public string description { get; set; }
       }

       public class Screenshot
       {
           public List<List<object>> available_sizes { get; set; }
           public object attribution { get; set; }
       }

       public class RootObject 
       {
           public string name { get; set; }
           public string permalink { get; set; }
           public string crunchbase_url { get; set; }
           public string homepage_url { get; set; }
           public string blog_url { get; set; }
           public string blog_feed_url { get; set; }
           public string twitter_username { get; set; }
           public string category_code { get; set; }
           public int number_of_employees { get; set; }
           public int founded_year { get; set; }
           public int founded_month { get; set; }
           public object founded_day { get; set; }
           public object deadpooled_year { get; set; }
           public object deadpooled_month { get; set; }
           public object deadpooled_day { get; set; }
           public object deadpooled_url { get; set; }
           public string tag_list { get; set; }
           public string alias_list { get; set; }
           public string email_address { get; set; }
           public string phone_number { get; set; }
           public string description { get; set; }
           public string created_at { get; set; }
           public string updated_at { get; set; }
           public string overview { get; set; }
           public Image image { get; set; }
           public List<object> products { get; set; }
           public List<Relationship> relationships { get; set; }
           public List<object> competitions { get; set; }
           public List<Providership> providerships { get; set; }
           public string total_money_raised { get; set; }
           public List<FundingRound> funding_rounds { get; set; }
           public List<object> investments { get; set; }
           public object acquisition { get; set; }
           public List<object> acquisitions { get; set; }
           public List<Office> offices { get; set; }
           public List<object> milestones { get; set; }
           public object ipo { get; set; }
           public List<VideoEmbed> video_embeds { get; set; }
           public List<Screenshot> screenshots { get; set; }
           public List<object> external_links { get; set; }
       }
    }
 }

1 个答案:

答案 0 :(得分:0)

我想你正在寻找这样的东西,如果不是你应该指明你的问题,或者告诉为什么以下不起作用或发生了哪个错误......

foreach (var office in j.offices)
{
     Console.WriteLine("Description: {0}", office.description );
     //... 
}

但可以肯定的是:可以用C#完成!

对于那些List<object>属性,您应该将相应的类添加到模型中(您生成的类)或尝试将这些对象强制转换为JsonObject或者......像那样。 (用VS检查以查看实际类型。)