C# Code:

class Program
{
   static void Main(string[] args)
   {
      try
      {
         string serverURL = "http://localhost:17818/";
         
         Console.WriteLine("C# ASP.NET WebApi服务器搭建详解 - 自承载（Self Hosting）");
         Console.WriteLine("正在启动WebApi Server :" + serverURL + " ....");
         using (WebApp.Start<StartupAppBuilder>(url: serverURL))
         {
            Console.WriteLine("启动WepApi 服务器成功.");
            Console.WriteLine("............");
            Console.ReadLine();
         }
      }
      catch (Exception ex)
      {
         string msg = ex.Message;
         if (ex.InnerException != null) msg = msg + "\r\n" + ex.InnerException.Message;
         Console.WriteLine("启动WepApi 服务器异常：" + msg);
         Console.ReadLine();
      }
   }
}

//来源:C/S框架网(www.csframework.com) QQ:23404761

C# Code:

public class StartupAppBuilder
{
   public static void Configuration(IAppBuilder appBuilder)
   {
      // 在应用程序启动时运行的代码
      
      //加载WebApi服务器配置信息
      HttpConfiguration config = new HttpConfiguration();
      
      //配置路由
      var cors = new EnableCorsAttribute("*", "*", "*");
      config.EnableCors(cors);
      config.MapHttpAttributeRoutes();
      
      //配置JSON格式化
      GlobalConfiguration.Configuration.Formatters.Insert(0, new PlainTextTypeFormatter());
      
      config.Formatters.JsonFormatter.SerializerSettings.Formatting = Newtonsoft.Json.Formatting.Indented;
      config.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
      config.Formatters.JsonFormatter.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm";
      config.Formatters.JsonFormatter.SerializerSettings.NullValueHandling = NullValueHandling.Ignore;
      config.Formatters.Remove(config.Formatters.XmlFormatter);
      
      // 解决json序列化时的循环引用问题
      config.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
      
      // 对 JSON 数据使用混合大小写。驼峰式,但是是javascript 首字母小写形式.
      //config.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
      
      // 对 JSON 数据使用混合大小写。跟属性名同样的大小.输出
      config.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new UnderlineSplitContractResolver();
      
      //使用配置
      appBuilder.UseWebApi(config);
      appBuilder.UseStageMarker(PipelineStage.PostAcquireState);
      
      //链接控制器
      //Type C1 = typeof(CSFramework.WebAPI.Demo.DemoController);
   }
   
}

//来源:C/S框架网(www.csframework.com) QQ:23404761