wcf服务编程（一）

步骤一：定义契约

[ServiceContract]     //定义服务契约   需要引用System.ServiceModel
    public interface ICalculator
    {
        [OperationContract]   //定义消息契约
        double Add(double x, double y);
        [OperationContract]
        double Subtract(double x, double y);
        [OperationContract]
        double Multiply(double x, double y);
        [OperationContract]
        double Divide(double x, double y);
    }

步骤二：创建服务

public class CalculatorService:ICalculator   //继承服务契约
    {
        public double Add(double x, double y)
        {
            return x + y;
        }
        public double Subtract(double x, double y)
        {
            return x - y;
        }
        public double Multiply(double x, double y)
        {
            return x * y;
        }
        public double Divide(double x, double y)
        {
            return x / y;
        }
    }

步骤三：服务寄宿（通过控制台寄宿）

static void Main(string[] args)
        {
            using (ServiceHost host = new ServiceHost(typeof(CalculatorService))) // 承载服务
            {
                host.AddServiceEndpoint(typeof(ICalculator), new WSHttpBinding(), "http://localhost:3721/CalculatorService");  // 增加节点到承载服务，参数是：契约、绑定、地址
                if (host.Description.Behaviors.Find<ServiceMetadataBehavior>() == null)
                {
                    ServiceMetadataBehavior behavior = new ServiceMetadataBehavior();     //定义服务行为
                    behavior.HttpGetEnabled = true;             //是否发布服务元数据，方便使用GET-HTTP进行检索
                    behavior.HttpGetUrl = new Uri("http://localhost:3721/CalculatorService/metadata");  //获取或设置元数据的发布地址
                    host.Description.Behaviors.Add(behavior);   //添加服务行为到承载服务
                }
                host.Opened += delegate
                {
                    Console.WriteLine("服务已经开启，按任意键终止");
                };
                host.Open();
                Console.Read();
            }
        }

步骤四：服务端通过配置文件配置服务

xml：

<configuration>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="metadataBehavior">
          <serviceMetadata httpGetEnabled="true" httpGetUrl="http://127.0.0.1:3722/CalculatorService/metadata"/>
        </behavior>
      </serviceBehaviors>      
    </behaviors>
    
    <services>
      <service name="Service.CalculatorService" behaviorConfiguration="metadataBehavior">
        <endpoint address="http://127.0.0.1:3722/CalculatorService" binding="wsHttpBinding"
            bindingConfiguration="" name="Test" contract="Service.Interface.ICalculator" />
      </service>
    </services>
  </system.serviceModel>
</configuration>

c#

static void Main(string[] args)
        {
            using (ServiceHost host = new ServiceHost(typeof(CalculatorService))) // 承载服务
            {              
                host.Opened += delegate
                {
                    Console.WriteLine("服务已经开启，按任意键终止");
                };
                host.Open();
                Console.Read();
            }
        }

步骤五：客户端调用 （不通过代理类的方式）

static void Main(string[] args)
        {
            //客户端调用，不通过代理类，通过ChannelFactory直接创建服务代理对象
            //条件：需要引用契约动态库
            using (ChannelFactory<ICalculator> channelFactory = new ChannelFactory<ICalculator>(new WSHttpBinding(), "http://127.0.0.1:3722/CalculatorService"))
            {
                ICalculator calcuator = channelFactory.CreateChannel();  //创建服务代理对象
                Console.WriteLine("5+5={0}", calcuator.Add(5, 5));
                Console.WriteLine("5-5={0}", calcuator.Subtract(5, 5));
                Console.WriteLine("5*5={0}", calcuator.Multiply(5, 5));
                Console.WriteLine("5/5={0}", calcuator.Divide(5, 5));
            }
            Console.Read();
        }