将 Stream 参数与其他参数一起传递以通过 POST 方法调用 WCF 服务-解网

问：

我是否可以要求另一种方法将流文件作为参数与其他参数一起传递，如下图所示，通过post方法将流文件传递给我的WCF服务。我是初学者，所以我不太确定如何处理这件事。我故意没有输入端口号。在我的代码中，我遇到了这个错误“System.Web.HttpInputStream”无法序列化。这就是为什么我需要找到其他方法来传递参数。

客户端代码：

                FileVariables fileInput = new FileVariables
                {
                    fileName = FileUpload1.FileName,
                    fileContents = FileUpload1.FileContent,
                    Username = txtUsername.Text,
                    Password = txtPassword.Text
                };


                DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(FileVariables));
                MemoryStream ms = new MemoryStream();
                json.WriteObject(ms, fileInput);

                string data = Encoding.UTF8.GetString(ms.ToArray(), 0, (int)ms.Length);
                WebClient webClient = new WebClient();
                webClient.Headers["Content-type"] = "application/json";
                webClient.Encoding = Encoding.UTF8;
                webClient.UploadString("http://localhost/TestService.svc/REST/UploadFile", "POST", data);

WCF 服务：

  public interface ITestService
  {
    [OperationContract]
    [WebInvoke(Method = "POST", UriTemplate = "/UploadFile",
               BodyStyle = WebMessageBodyStyle.Wrapped,
               RequestFormat = WebMessageFormat.Json,
               ResponseFormat = WebMessageFormat.Json)]
   string UploadFile(FileVariables file);
  }

  [DataContract]
  public class FileVariables
  {
    [DataMember(Order = 1)]
    public string fileName { get; set; }

    [DataMember(Order =2)]
    public Stream fileContents { get; set; }

    [DataMember(Order = 3)]
    public string Username { get; set; }

    [DataMember(Order = 4)]
    public string Password { get; set; }

  }

C# asp.net WCF

        [MessageContract]
public class FileVariables
{
    [MessageHeader]
    public string fileName { get; set; }
    [MessageBodyMember]
    public Stream fileContents { get; set; }
    [MessageHeader]
    public string Username { get; set; }
    [MessageHeader]
    public string Password { get; set; }
}

这是 filevariables 类。

更新

你可以这样称呼它：

        string fileName= "fileName", Username= "Username", Password= "Password";
        string ad = "/UploadFile/" + fileName+"/"+ Username+"/"+ Password;
        HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://localhost:8012/ServiceModelSamples/service"+ ad);
        req.Method = "POST";
        req.ContentType = "text/plain";
        Stream reqStream = req.GetRequestStream();
        byte[] fileToSend = new byte[12345];
        for (int i = 0; i < fileToSend.Length; i++)
        {
            fileToSend[i] = (byte)('a' + (i % 26));
        }
        reqStream.Write(fileToSend, 0, fileToSend.Length);
        reqStream.Close();
        HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

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将 Stream 参数与其他参数一起传递以通过 POST 方法调用 WCF 服务

Passing Stream Parameter with other Parameters to invoke WCF Service through POST method

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