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：