Windows Communication Foundation(WCF)是由微软发展的一组数据通信的应用程序开发接口,可以翻译为Windows通讯接口。
通信双方的沟通方式,由合约来订定。通信双方所遵循的通信方法,由协议绑定来订定。通信期间的安全性,由双方约定的安全性层次来订定。
由于 WCF 支持了HTTP,TCP,Named Pipe,MSMQ,Peer-To-Peer TCP 等协议,而 HTTP 又分为基本 HTTP 支持 (BasicHttpBinding) 以及 WS-HTTP 支持 (WsHttpBinding),而 TCP 亦支持 NetTcpBinding,NetPeerTcpBinding 等通信方式,因此,双方必须要统一通信的协议,并且也要在编码以及格式上要有所一致。
一般地,我们通过接口的形式定义服务契约,下面代码将IHelloWord定义成服务契约
[ServiceContract]
public interface IHelloWorld
{
[OperationContract]
string GetData();
}
通过应用ServiceContractAttribute特性将接口定义成服务契约,要在相应的操作方法上面显式地应用OperationContractAttribute特性。
HelloWorld实现IHelloWorld接口,并具体实现接口定义的方法。
public class HelloWorld :IHelloWorld
{
public string GetData()
{
return "Hello World";
}
}
在Program中实现WCF服务的启动
class Program
{
static void Main(string[] args)
{
using (ServiceHost host = new ServiceHost(typeof(HelloWorld)))
{
host.AddServiceEndpoint(typeof(IHelloWorld), new WSHttpBinding(), "http://127.0.0.1:9999/HelloWord");
if (host.Description.Behaviors.Find<ServiceMetadataBehavior>() == null)
{
ServiceMetadataBehavior behavior = new ServiceMetadataBehavior();
behavior.HttpGetEnabled = true;
behavior.HttpGetUrl = new Uri("http://127.0.0.1:9999/HelloWord/HelloWord");
host.Description.Behaviors.Add(behavior);
}
host.Opened += delegate
{
Console.WriteLine("CalculaorService已经启动,按任意键终止服务!");
};
host.Open();
Console.Read();
}
}
}

现在服务已经启动,下面实现客户端的调用。(Client层)
有两种实现方式:
1:客户端层引用服务端DLL(WCF_Console_Service)
class Program
{
static void Main(string[] args)
{
using (ChannelFactory<IHelloWorld> channelFactory = new ChannelFactory<IHelloWorld>(new WSHttpBinding(), "http://127.0.0.1:9999/HelloWord"))
{
IHelloWorld proxy = channelFactory.CreateChannel();
using (proxy as IDisposable)
{
string t = proxy.GetData();
}
}
}
}
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2:添加服务引用

利用svcUtil.exe生成代码,输入http://127.0.0.1:9999/HelloWord/HelloWord参数(添加svcutil.exe见http://www.cnblogs.com/scottckt/archive/2012/05/20/2510716.html)
生成一个cs文件和一个config文件,生成的cs文件为
//------------------------------------------------------------------------------ // <auto-generated> // 此代码由工具生成。 // 运行时版本:2.0.50727.5472 // // 对此文件的更改可能会导致不正确的行为,并且如果 // 重新生成代码,这些更改将会丢失。 // </auto-generated> //------------------------------------------------------------------------------ [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")] [System.ServiceModel.ServiceContractAttribute(ConfigurationName="IHelloWorld")] public interface IHelloWorld { [System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/IHelloWorld/GetData", ReplyAction="http://tempuri.org/IHelloWorld/GetDataResponse")] string GetData(); } [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")] public interface IHelloWorldChannel : IHelloWorld, System.ServiceModel.IClientChannel { } [System.Diagnostics.DebuggerStepThroughAttribute()] [System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")] public partial class HelloWorldClient : System.ServiceModel.ClientBase<IHelloWorld>, IHelloWorld { public HelloWorldClient() { } public HelloWorldClient(string endpointConfigurationName) : base(endpointConfigurationName) { } public HelloWorldClient(string endpointConfigurationName, string remoteAddress) : base(endpointConfigurationName, remoteAddress) { } public HelloWorldClient(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) : base(endpointConfigurationName, remoteAddress) { } public HelloWorldClient(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) : base(binding, remoteAddress) { } public string GetData() { return base.Channel.GetData(); } }
生成的config为
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_IHelloWorld" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Windows" negotiateServiceCredential="true"
algorithmSuite="Default" establishSecurityContext="true" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="http://127.0.0.1:9999/HelloWord" binding="wsHttpBinding"
bindingConfiguration="WSHttpBinding_IHelloWorld" contract="IHelloWorld"
name="WSHttpBinding_IHelloWorld">
<identity>
<userPrincipalName value="zb-PC\Administrator" />
</identity>
</endpoint>
</client>
</system.serviceModel>
</configuration>
Program代码为
class Program
{
static void Main(string[] args)
{
HelloWorldClient client = new HelloWorldClient();
string s = client.GetData();
Console.WriteLine(s);
}
}
运行结果
以上为新手学习,高手大神就绕过啦,和大家一起学习