在 WPF 应用程序中托管 WCF Web 服务

Posted 2023-02-25

【中文标题】在 WPF 应用程序中托管 WCF Web 服务

【英文标题】：Hosting WCF web service inside WPF application

【发布时间】：2012-03-16 06:01:57

【问题描述】：

我正在开发一个 WPF 应用程序。作为应用程序的一部分，我需要通过另一个 ios 应用程序接收一些图像。因此，我已经编写了 WCF REST 服务和 iOS，并且我能够将图像发送到 Web 服务只有在我将服务定义为 IIS 的一部分时。 我需要做的是：当 WPF 应用程序启动时，Web 服务也将启动，并为 iOS 设备公开一个端口号以发送图像并在启动时“唤醒”WPF 应用程序。 有什么想法吗？

【问题讨论】：

您是否考虑过在应用程序中自托管服务？

你有进步吗？我也有同样的情况。

【参考方案1】：

是的，我做到了。实际上正如蒂姆所提到的，这正是我所做的自托管服务。 你可以看看下面的视频（还有很多其他的，看看链接）。 http://channel9.msdn.com/shows/Endpoint/endpointtv-Screencast-Building-RESTful-Services-with-WCF/

以下是我的 WCF 项目中的完整文件：（如电影中所述），我希望它能帮助您入门。 请注意，在您的机器中打开特定端口以启用传入的 HTTP 流量也很重要。看看WCF ServiceHost access rights。

Eval.cs

[DataContract]
public class Eval

    public string id;

    [DataMember]
    public string Submitter;
    [DataMember]
    public DateTime Timesent;
    [DataMember]
    public string Comments;

IEvalService.cs

[ServiceContract]
public interface IEvalService

    [WebInvoke(Method="POST", UriTemplate = "evals")]
    [OperationContract]
    void SubmitEval(Eval i_Eval);

    [WebGet(UriTemplate = "evals")]
    [OperationContract]
    List<Eval> GetEvals();

    [WebGet(UriTemplate="eval/i_Id")]
    [OperationContract]
    Eval GetEval(string i_Id);

    [WebGet(UriTemplate = "evals/i_Submitter")]
    [OperationContract]
    List<Eval> GetEvalsBySubmitters(string i_Submitter);

    [WebInvoke(Method = "DELETE", UriTemplate = "eval/i_Id")]
    [OperationContract]
    void RemoveEval(string i_Id);

    [WebGet(UriTemplate = "GetLastPhoto", BodyStyle = WebMessageBodyStyle.Bare)]
    Stream GetLastPhoto();

    [OperationContract] // this web address is for receiving the image for the iOS app.
    [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Bare, UriTemplate = "TestPost")]
    string TestPost(Stream stream);

EvalService.cs

[ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)]
public class EvalService : IEvalService

    private List<Eval> m_Evals = new List<Eval>();
    private int evalCount = 0;
    private string k_FilePath = "C:\\ImageUpload\\";

    public static event Action<LogicImage> ImageLoaded;

    public void SubmitEval(Eval i_Eval)
    
        i_Eval.id = (++evalCount).ToString();
        m_Evals.Add(i_Eval);
    

    public List<Eval> GetEvals()
    
        return m_Evals;
    

    public Eval GetEval(string i_Id)
    
        return m_Evals.First(e => e.id.Equals(i_Id));
    

    public List<Eval> GetEvalsBySubmitters(string i_Submitter)
    
        if (i_Submitter == null && i_Submitter.Equals(""))
        
            return null;
        

        else
        
            return m_Evals.Where(e => e.Submitter == i_Submitter).ToList();
        
    

    public void RemoveEval(string i_ID)
    
        throw new NotImplementedException();
    

    public Stream GetLastPhoto()
    
        Image image = Image.FromFile("C:\\ImageUpload\\014.png");
        MemoryStream ms = new MemoryStream(imageToByteArray(image));
        return ms;
    

    public string TestPost(Stream stream)
    
        HttpMultipartParser parser = new HttpMultipartParser(stream, "image");

        if (parser.Success)
        
            if (parser.Success)
            
                // deal with exceptions..
                //
                File.WriteAllBytes(k_FilePath + parser.Filename, parser.FileContents);
                if (ImageLoaded != null)
                
                    ImageLoaded.Invoke(new LogicImage()FileName = parser.Filename, Location = k_FilePath);
                
            
        

        return "test";
    

    public static byte[] imageToByteArray(System.Drawing.Image imageIn)
    
        MemoryStream ms = new MemoryStream();
        imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
        return ms.ToArray();
    


public class LogicImage

    public string FileName  get; set; 
    public string Location  get; set; 

最后但并非最不重要的** App.config**

<?xml version="1.0"?>
<configuration>

  <system.web>
    <compilation debug="true"/>
  </system.web>
  <!-- When deploying the service library project, the content of the config file must be added to the host's 
  app.config file. System.Configuration does not support config files for libraries. -->
  <system.serviceModel>
    <services>
      <service name="ImageRecevierWebService.EvalService">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8732/Design_Time_Addresses/ImageRecevierWebService/Service1/"/>
          </baseAddresses>
        </host>
        <!-- Service Endpoints -->
        <!-- Unless fully qualified, address is relative to base address supplied above -->
        <endpoint address="" binding="wsHttpBinding" contract="ImageRecevierWebService.IEvalService">
          <!-- 
              Upon deployment, the following identity element should be removed or replaced to reflect the 
              identity under which the deployed service runs.  If removed, WCF will infer an appropriate identity 
              automatically.
          -->
          <identity>
            <dns value="localhost"/>
          </identity>
        </endpoint>
        <!-- Metadata Endpoints -->
        <!-- The Metadata Exchange endpoint is used by the service to describe itself to clients. --> 
        <!-- This endpoint does not use a secure binding and should be secured or removed before deployment -->
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, 
          set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="True"/>
          <!-- To receive exception details in faults for debugging purposes, 
          set the value below to true.  Set to false before deployment 
          to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="False"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>