Question

我尝试使用WCF上传pdf /文件。

我的问题是，我上传的文件尚未完成

有人可以帮助我

这是我的功能上传：

public string UploadFile(FileUploadMessage request)
{
    Stream fileStream = null;
    Stream outputStream = null;
    try
    {
        fileStream = request.FileByteStream;

        string rootPath = @"C:\WCF";

        DirectoryInfo dirInfo = new DirectoryInfo(rootPath);

        if (!dirInfo.Exists)
        {
            dirInfo.Create();
        }
        string newFileName = Path.Combine(rootPath, Guid.NewGuid() + ".pdf");
        outputStream = new FileInfo(newFileName).OpenWrite();
        const int bufferSize = 1024;
        byte[] buffer = new byte[bufferSize];

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

        while (bytesRead > 0)
        {
            outputStream.Write(buffer, 0, bufferSize);
            bytesRead = fileStream.Read(buffer, 0, bufferSize);
        }
        return newFileName;
    }
    catch (IOException ex)
    {
        throw new FaultException<IOException>(ex, new FaultReason(ex.Message));
    }
    finally
    {
        if (fileStream != null)
        {
            fileStream.Close();
        }
        if (outputStream != null)
        {
            outputStream.Close();
        }
    }
}

这是我的配置

<binding name="BasicHttpBinding_ITransferService" closeTimeout="04:01:00"
                     openTimeout="04:01:00" receiveTimeout="04:10:00" sendTimeout="04:01:00"
                     allowCookies="false" bypassProxyOnLocal="false"
                     hostNameComparisonMode="StrongWildcard"
                     maxBufferSize="2147483647" maxBufferPoolSize="2147483647"
                     maxReceivedMessageSize="2147483647"
                     messageEncoding="Mtom" textEncoding="utf-8"
                     transferMode="Streamed"
                     useDefaultWebProxy="true">
                    <readerQuotas maxDepth="128"
                        maxStringContentLength="2147483647" maxArrayLength="2147483647"
                        maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
                    <security mode="None">
                        <transport clientCredentialType="None"
                                proxyCredentialType="None" realm="" />
                        <message clientCredentialType="UserName" algorithmSuite="Default" />
                    </security>
                </binding>

Answer 1

如果要将byte []（例如文件）流式传输到WCF操作，则操作只需要一个Stream类型的参数。问题是你需要知道接收端（服务）上字节[]的长度。

一种解决方案是对两个单独的服务操作进行两次调用

public void SetLength(long length)

public void Upload(Stream stream)

保存第二次通话中使用的第一次通话的长度。

使用此解决方案，您无需关心将配置中的MaxRecievedMessageSize设置为某个数字。

Answer 2

它应该是这样的（检查这个例子http://www.dotnetfunda.com/articles/show/2008/upload-a-file-using-aspnet-file-upload-control-and-wcf）：

class FileUploadService : IFileUploadService

{ public bool UploadFileData（FileData fileData） { bool result = false; 尝试 { //设置要保存文件的位置 string FilePath = Path.Combine（{来自某些设置的路径}，fileData.FileName）;

        //If fileposition sent as 0 then create an empty file
        if (fileData.FilePosition == 0)
        {
            File.Create(FilePath).Close();
        }

        //Open the created file to write the buffer data starting at the given file position
        using (FileStream fileStream = new FileStream(FilePath, FileMode.Open, FileAccess.ReadWrite, FileShare.Read))
        {
            fileStream.Seek(fileData.FilePosition, SeekOrigin.Begin);
            fileStream.Write(fileData.BufferData, 0, fileData.BufferData.Length);
        }
    }
    catch (Exception ex)
    {            
        //throw FaultException<>();
    }

    return result;
}

}

WCF上传文件未完成

2 个答案: