WCF之服务说明

实质：服务说明实质上就是服务相关的一些信息。

１．服务端代码添加了如下黄色代码：

　

 class Program
     {
         static void Main(string[] args)
         {
             //创建一个ServiceHost
             using (ServiceHost serviceHost = new ServiceHost(typeof(CalculatorService)))
             {
                 // Open the ServiceHost to create listeners
                 serviceHost.Open();
                 Console.WriteLine("服务已经开启！");
                 Console.WriteLine("按回车键结束服务！");
                 Console.WriteLine();
                 Console.ReadLine();
             }
         }

     }
     [ServiceContract]//定义服务协定完成
     public interface ICalculator
     {
         [OperationContract]
         double Add(double n1, double n2);
         [OperationContract]
         double Subtract(double n1, double n2);
         [OperationContract]
         double Multiply(double n1, double n2);
         [OperationContract]
         double Divide(double n1, double n2);
     }

     [ServiceContract]
     public interface ICalculatorSession
     {
         [OperationContract]
         string test(string s);

         [OperationContract]
         string GetServiceDescriptionInfo();
     }

     public class CalculatorService : ICalculator, ICalculatorSession
     {
         public double Add(double n1, double n2)
         {
             return n1 + n2;
         }

         public double Subtract(double n1, double n2)
         {
             return n1 - n2;
         }

         public double Multiply(double n1, double n2)
         {
             return n1 * n2;
         }

         public double Divide(double n1, double n2)
         {
             return n1 / n2;
         }

         public string test(string s)
         {
             return s;
         }

         public string GetServiceDescriptionInfo()
         {
             StringBuilder sb = new StringBuilder();
             OperationContext operationContext = OperationContext.Current;
             ServiceHost serviceHost = (ServiceHost)operationContext.Host;
             ServiceDescription dec = serviceHost.Description;
             sb.Append("Base addresses:\n");
             foreach (Uri url in serviceHost.BaseAddresses)
             {
                 sb.Append(" " + url + "\n");
             }
             sb.Append("Service endpoint:\n");
             foreach (ServiceEndpoint endPoint in dec.Endpoints)
             {
                 sb.Append("Address:" + endPoint.Address + "\n");
                 sb.Append("Binding:" + endPoint.Binding + "\n");
                 sb.Append("Contract:" + endPoint.Contract + "\n");
             }

             return sb.ToString();
         }
     }

２．客户端和服务端的配置可前面随笔中的配置

３．客户端的代码：

  class Program
     {
         static void Main(string[] args)
         {
             CalculatorClient client = new CalculatorClient("secure");
             double n1 = 5.6;
             double n2 = 7.3;
             double result;

             result = client.Add(n2,n1);
             Console.WriteLine("执行加法后的结果为：{0}", result.ToString());

             result = client.Subtract(n2, n1);
             Console.WriteLine("执行减法后的结果为：{0}", result.ToString());

             result = client.Multiply(n1, n2);
             Console.WriteLine("执行乘法后的结果为：{0}", result.ToString());

             result = client.Divide(n1, n2);
             Console.WriteLine("执行除法后的结果为：{0}", result.ToString());

             CalculatorSessionClient clientSeesion = new CalculatorSessionClient();
             string s = clientSeesion.test("你好我做一个测试！");
             string b = clientSeesion.GetServiceDescriptionInfo();
             Console.WriteLine(s);
             Console.WriteLine(b);
             Console.ReadLine();

         }
     }

４．运行结果如下图：