使用简单的HttpClient类使用WCF服务

考虑一下Microsoft在以下方面的示例：

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如何使用简单的HttpClient对象使用服务器

在某些情况下，无法向项目添加Web引用。然后，使用HttpClient对象可能是唯一的方法。。。或者也可以选择向客户端添加服务器DLL引用

这应该是如何调用下面描述的简单double=Add（double，double）函数的简单示例：

namespace GettingStartedLib
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together.
    [ServiceContract]
    public interface ICalculator
    {
        [OperationContract]
        double Add(double n1, double n2);
    }
}

服务器端如下所示：

namespace GettingStartedLib
{
    public class CalculatorService : ICalculator
    {
        public double Add(double n1, double n2)
        {
            double result = n1 + n2;
            Console.WriteLine("Received Add({0},{1})", n1, n2);
            // Code added to write output to the console window.
            Console.WriteLine("Return: {0}", result);
            return result;
        }
    }
}

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您可以使用http客户端发送http请求，该请求引用Fiddle捕获的请求内容

POST http://10.157.18.36:12000/Service1.svc HTTP/1.1 Content-Type: text/xml; charset=utf-8 SOAPAction: "http://tempuri.org/IService1/Add" Host: 10.157.18.36:12000 Content-Length: 161 Expect: 100-continue Accept-Encoding: gzip, deflate Connection: Keep-Alive

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s:Body><Add xmlns="http://tempuri.org/"><n1>34.23</n1><n2>80.54</n2></Add></s:Body></s:Envelope>

Service1.svc.cs

    public class Service1 : IService1
    {
        public double Add(double n1, double n2)
        {
            return n1 + n2;
        }
}

配置。

<system.serviceModel>
    <services>
      <service name="WcfService1.Service1">
        <endpoint address="" binding="webHttpBinding" contract="WcfService1.IService1" behaviorConfiguration="rest"></endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"></endpoint>
      </service>
    </services>
    <behaviors>
      <endpointBehaviors>
        <behavior name="rest">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" httpGetUrl="mex"/>
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <protocolMapping>
        <add binding="basicHttpsBinding" scheme="https" />
    </protocolMapping>    
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

static void Main(string[] args)
        {
            HttpClient client = new HttpClient();
            var  result=client.GetStringAsync("http://localhost:9001/Service1.svc/add?n1=1.2&n2=3.2");
            Console.WriteLine(result.Result);

        }

结果。

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如果有什么我可以帮忙的，请随时告诉我。

“使用简单的HttpClient对象使用服务器”，但为什么？它破坏了WCF的全部目的！WCF是关于创建代理类和执行远程函数的，就像它们是本地函数一样。这很简单，也很有用。现在你只想忽略所有这些，用一些疯狂的东西。。。为什么？如果您想使用HttpClient，只需创建一个API项目。

static void Main(string[] args)
        {
            HttpClient client = new HttpClient();
            var  result=client.GetStringAsync("http://localhost:9001/Service1.svc/add?n1=1.2&n2=3.2");
            Console.WriteLine(result.Result);

        }