wcf学习笔记1 hello world程序

1.wcf入门示例

2.源代码下载

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1.wcf入门示例

1.1 定义contract

其实这里的contract简单的将就是一个interface，但是注意的是这里的接口需要添加ServiceContract属性，接口中的方法只有添加了OperationContract才是公开的contract方法。

[ServiceContract(Namespace = "http://Microsoft.ServiceModel.Samples")] public interface ICalculator { [OperationContract] double Add(double d1, double d2); [OperationContract] double Minus(double d1, double d2); [OperationContract] double Divide(double d1, double d2); [OperationContract] double Multiply(double d1, double d2); }

1.2 实现该contract的service

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ServiceModel; namespace Microsoft.ServiceModel.Samples { class CalculatorService : ICalculator { #region ICalculator 成员 public double Add(double d1, double d2) { double result = d1 + d2; Console.WriteLine("Received ({0},{1})", d1, d2); Console.WriteLine("Return: {0}", result); return result; } public double Minus(double d1, double d2) { double result = d1 - d2; Console.WriteLine("Received ({0},{1})", d1, d2); Console.WriteLine("Return: {0}", result); return result; } public double Divide(double d1, double d2) { double result = d1 / d2; Console.WriteLine("Received ({0},{1})", d1, d2); Console.WriteLine("Return: {0}", result); return result; } public double Multiply(double d1, double d2) { double result = d1 * d2; Console.WriteLine("Received ({0},{1})", d1, d2); Console.WriteLine("Return: {0}", result); return result; } #endregion } }

1.3 承载service

承载一个wcf服务可以使用下面的步骤：

1.创建ServiceHost承载该服务

ServiceHost selfHost = new ServiceHost(typeof(CalculatorService), baseAddress);

2.使用try...catch块，并在其中添加下面三步中的代码：

try { // ... } catch (CommunicationException ce) { Console.WriteLine("An exception occurred: {0}", ce.Message); selfHost.Abort(); }

3.添加服务终结点

selfHost.AddServiceEndpoint( typeof(ICalculator), new WSHttpBinding(), "CalculatorService");

4.Enable Metadata Exchange

ServiceMetadataBehavior smb = new ServiceMetadataBehavior(); smb.HttpGetEnabled = true; selfHost.Description.Behaviors.Add(smb);

5.打开ServiceHost

selfHost.Open();

完整代码如下：

static void Main(string[] args) { Uri baseAddress = new Uri("http://localhost:8000/ServiceModelSamples/Service"); ServiceHost selfHost = new ServiceHost(typeof(CalculatorService), baseAddress); try { // Step 3 of the hosting procedure: Add a service endpoint. selfHost.AddServiceEndpoint( typeof(ICalculator), new WSHttpBinding(), "CalculatorService"); // Step 4 of the hosting procedure: Enable metadata exchange. ServiceMetadataBehavior smb = new ServiceMetadataBehavior(); smb.HttpGetEnabled = true; selfHost.Description.Behaviors.Add(smb); // Step 5 of the hosting procedure: Start (and then stop) the service. selfHost.Open(); Console.WriteLine("The service is ready."); Console.WriteLine("Press <ENTER> to terminate service."); Console.WriteLine(); Console.ReadLine(); // Close the ServiceHostBase to shutdown the service. selfHost.Close(); } catch (CommunicationException ce) { Console.WriteLine("An exception occurred: {0}", ce.Message); selfHost.Abort(); } }

1.4生成客户端使用代码

svcutil.exe /language:cs /out:generatedProxy.cs /config:app.config http://localhost:8000/ServiceModelSamples/service

生成app.config和generatedProxy.cs两个文件：

app.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.serviceModel>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_ICalculator" 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="">
                            <extendedProtectionPolicy policyEnforcement="Never" />
                        </transport>
                        <message clientCredentialType="Windows" negotiateServiceCredential="true"
                            algorithmSuite="Default" establishSecurityContext="true" />
                    </security>
                </binding>
            </wsHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://localhost:8000/ServiceModelSamples/Service/CalculatorService"
                binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_ICalculator"
                contract="ICalculator" name="WSHttpBinding_ICalculator">
                <identity>
                    <userPrincipalName value="home-PC/home" />
                </identity>
            </endpoint>
        </client>
    </system.serviceModel>
</configuration>

generatedProxy.cs

//------------------------------------------------------------------------------
// <auto-generated>
//     此代码由工具生成。
//     运行时版本:2.0.50727.4927
//
//     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(Namespace="http://Microsoft.ServiceModel.Samples", ConfigurationName="ICalculator")]
public interface ICalculator
{
    
    [System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Add", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/AddResponse")]
    double Add(double d1, double d2);
    
    [System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Minus", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/MinusResponse")]
    double Minus(double d1, double d2);
    
    [System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Divide", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/DivideResponse")]
    double Divide(double d1, double d2);
    
    [System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Multiply", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/MultiplyResponse")]
    double Multiply(double d1, double d2);
}

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]
public interface ICalculatorChannel : ICalculator, System.ServiceModel.IClientChannel
{
}

[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")]
public partial class CalculatorClient : System.ServiceModel.ClientBase<ICalculator>, ICalculator
{
    
    public CalculatorClient()
    {
    }
    
    public CalculatorClient(string endpointConfigurationName) : 
            base(endpointConfigurationName)
    {
    }
    
    public CalculatorClient(string endpointConfigurationName, string remoteAddress) : 
            base(endpointConfigurationName, remoteAddress)
    {
    }
    
    public CalculatorClient(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) : 
            base(endpointConfigurationName, remoteAddress)
    {
    }
    
    public CalculatorClient(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) : 
            base(binding, remoteAddress)
    {
    }
    
    public double Add(double d1, double d2)
    {
        return base.Channel.Add(d1, d2);
    }
    
    public double Minus(double d1, double d2)
    {
        return base.Channel.Minus(d1, d2);
    }
    
    public double Divide(double d1, double d2)
    {
        return base.Channel.Divide(d1, d2);
    }
    
    public double Multiply(double d1, double d2)
    {
        return base.Channel.Multiply(d1, d2);
    }
}

1.5 客户端程序

static void Main(string[] args)
        {
            CalculatorClient client = new CalculatorClient();

            // Step 2: Call the service operations.
            // Call the Add service operation.
            double value1 = 100.00D;
            double value2 = 15.99D;
            double result = client.Add(value1, value2);
            Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result);

            // Call the Subtract service operation.
            value1 = 145.00D;
            value2 = 76.54D;
            result = client.Minus(value1, value2);
            Console.WriteLine("Subtract({0},{1}) = {2}", value1, value2, result);

            // Call the Multiply service operation.
            value1 = 9.00D;
            value2 = 81.25D;
            result = client.Multiply(value1, value2);
            Console.WriteLine("Multiply({0},{1}) = {2}", value1, value2, result);

            // Call the Divide service operation.
            value1 = 22.00D;
            value2 = 7.00D;
            result = client.Divide(value1, value2);
            Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result);

            //Step 3: Closing the client gracefully closes the connection and cleans up resources.
            client.Close();


            Console.WriteLine();
            Console.WriteLine("Press <ENTER> to terminate client.");
            Console.ReadLine();

        }

2.源代码下载

源代码下载