類型'System.Threading.Tasks.Task'無法序列化

Question

我已經在WCF中創建了一個自託管web服務。當我試圖從不同的系統調用這個web 服務時，它會導致不同的異常，並且它運行正常。

我的服務如下。

Web服務：

namespace KryptonWebService 
{  

     [ServiceContract()] 
     public interface ISetUpHost 
     { 
      [OperationContract()] 
      void EditHostFile(bool flag = true); 
     } 




     [ServiceContract] 
     public interface IFileTransferService 
     { 
      [OperationContract]//(IsOneWay = true) 
      // void UploadFile(FileUploadMessage request); 
      void UploadFile(Stream FileByteStream); 
      [OperationContract] //(IsOneWay = false) 
      Stream DownloadFile(); 
     } 
} 

實現類：

public class KryptonService : KryptonWebService.ISetUpHost, KryptonWebService.IFileTransferService 
    { 
     //public int Add(int num1, int num2) 
     //{ 
     // return num1 + num2; 
     //} 

     public void EditHostFile(bool flag = true) 
     { 
      Console.WriteLine("Do Nothing"); 
     } 


     //public void UploadFile(FileUploadMessage request) 
     //{ 


     // string basePath = @"C:\Users\Mahesh\Downloads\UploadedZip\"; 
     // string serverFileName = Path.Combine(basePath, request.Filename); 

     // using (FileStream outfile = new FileStream(serverFileName, FileMode.Create)) 
     // { 
     //  const int bufferSize = 65536; // 64K 

     //  Byte[] buffer = new Byte[bufferSize]; 
     //  int bytesRead = request.FileByteStream.Read(buffer, 0, bufferSize); 

     //  while (bytesRead > 0) 
     //  { 
     //   outfile.Write(buffer, 0, bytesRead); 
     //   bytesRead = request.FileByteStream.Read(buffer, 0, bufferSize); 
     //  } 
     // } 

     //} 

     //public FileDownloadReturnMessage DownloadFile(FileDownloadMessage request) 
     //{ 
     // string localFileName = request.Filename; 
     // try 
     // { 
     //  string basePath = @"C:\Users\Mahesh\Downloads\Zip\"; 
     //  string serverFileName = Path.Combine(basePath, request.Filename); 

     //  Stream fs = new FileStream(serverFileName, FileMode.Open); 

     //  return new FileDownloadReturnMessage(request.Filename, fs); 
     // } 
     // catch (IOException e) 
     // { 
     //  return null; 

     // }    
     //} 


     public void UploadFile(Stream FileByteStream) 
     { 
      try 
      { 
       string filename = "Krypton_Uploaded.zip"; 
       string basePath = @"C:\Users\Mahesh\Downloads\UploadedZip\"; 
       string serverFileName = Path.Combine(basePath, filename); 

       using (FileStream outfile = new FileStream(serverFileName, FileMode.Create)) 
       { 
        const int bufferSize = 65536; // 64K 

        Byte[] buffer = new Byte[bufferSize]; 
        int bytesRead = FileByteStream.Read(buffer, 0, bufferSize); 

        while (bytesRead > 0) 
        { 
         outfile.Write(buffer, 0, bytesRead); 
         bytesRead = FileByteStream.Read(buffer, 0, bufferSize); 
        } 
       } 
      } 
      catch (IOException e) 
      { 
       // throw new FaultException<ioexception>(e); 
      } 
     } 

     public Stream DownloadFile() 
     { 
      string localFileName = "Krypton1.zip"; 
      try 
      { 
       string basePath = @"C:\Users\Mahesh\Downloads\Zip\"; 
       string serverFileName = Path.Combine(basePath, localFileName); 

       Stream fs = new FileStream(serverFileName, FileMode.Open); 

       // return new KryptonWebService.FileDownloadReturnMessage(fs); 

       return fs; 
      } 
      catch (IOException e) 
      { 
       string msg = e.Message; 
       return null; 
      } 
     } 
} 

現在在客戶端：

配置文件：

<?xml version="1.0" encoding="utf-8"?> 
<configuration> 
    <system.serviceModel> 
    <bindings> 
     <basicHttpBinding> 
     <binding name="BasicHttpBinding_IFileTransferService" maxReceivedMessageSize="32423432" /> 
     <binding name="BasicHttpBinding_ISetUpHost" /> 
     </basicHttpBinding> 
    </bindings> 
    <client> 
     <endpoint address="http://10.101.23.91:8090/KryptonService/Krypton" 
      binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IFileTransferService" 
      contract="IFileTransferService" name="BasicHttpBinding_IFileTransferService" /> 
     <endpoint address="http://10.101.23.91:8090/KryptonService/Krypton" 
      binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ISetUpHost" 
      contract="ISetUpHost" name="BasicHttpBinding_ISetUpHost" /> 
    </client> 
    </system.serviceModel> 
</configuration> 

客戶端代碼：

 private static void UploadFile(string uploadpath) 
      { 
       FileTransferServiceClient fileTransferClient = new FileTransferServiceClient(); 
       string uploadfilename = "Krypton.zip"; 


       // using (FileStream fs = new FileStream(@"C:\Users\Mahesh\Downloads\Zip\" + uploadfilename, FileMode.Open, FileAccess.Read, FileShare.Read)) 
       using (FileStream fs = new FileStream(Path.Combine(uploadpath, uploadfilename), FileMode.Open, FileAccess.Read, FileShare.Read)) 
       { 
        fileTransferClient.UploadFile(fs); 

       } 

      } 


string downloadfilename = "KryptonDownloaded.zip";     
       Stream fileStream = null; 
       // FileDownloadReturnMessage fsd = new FileDownloadReturnMessage(); 

       using (FileTransferServiceClient fileTransferClient = new FileTransferServiceClient()) 
       { 

        try 
        { 

         fileStream = fileTransferClient.DownloadFile(); 


        } 
        catch (Exception ex) 
        { 
         Console.WriteLine(ex.Message); 
        } 
        Stream outputStream = null; 

        try 
        {      

         outputStream = new FileInfo(Path.Combine(downloadPath, downloadfilename)).OpenWrite(); //new FileInfo(@"C:\Users\Mahesh\Downloads\Downloadfrom\" + downloadfilename).OpenWrite(); 
         byte[] buffer = new byte[2048]; 

         int bytesRead = fileStream.Read(buffer, 0, 2048); 

         while (bytesRead > 0) 
         { 
          outputStream.Write(buffer, 0, 2048); 
          bytesRead = fileStream.Read(buffer, 0, 2048); 
         } 
        } 

Answer 1

刪除System.Threading.Tasks.Task包含來自FileTransferServiceClient.cs的方法。例如

;

public interface IFTSService 
{ 
    [System.ServiceModel.OperationContractAttribute(Action = "http://tempuri.org/IFTSService/ContractSend", ReplyAction = "http://tempuri.org/IFTSService/ContractSendResponse")] 
    string ContractSend(SaveContractType saveContractType); 

    //[System.ServiceModel.OperationContractAttribute(Action = "http://tempuri.org/IFTSService/ContractSend", ReplyAction = "http://tempuri.org/IFTSService/ContractSendResponse")] 
    //System.Threading.Tasks.Task<string> ContractSendAsync(SaveContractType saveContractType); 
}