C# - 上传到服务器
问题描述:
后,我用上传文件下面的源代码,卓越和PDF格式,但文件移动到服务器后,该文件已损坏的文件已损坏。我认为这个问题是在编码过程Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
,但我不知道如何解决它。
C# - 上传到服务器
public static void sampleUpload()
{
// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://100.165.80.15:21/output/Group Dealer, Main Dealer, Zone, Branch, and Destination Report_20120927105003.pdf");
request.Method = WebRequestMethods.Ftp.UploadFile;
// This example assumes the FTP site uses anonymous logon.
request.Credentials = new NetworkCredential("toc", "fid123!!");
// Copy the contents of the file to the request stream.
StreamReader sourceStream = new StreamReader("D:\\Group Dealer, Main Dealer, Zone, Branch, and Destination Report_20120927105003.pdf");
byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
sourceStream.Close();
request.ContentLength = fileContents.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(fileContents, 0, fileContents.Length);
requestStream.Close();
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription);
response.Close();
}
答
不要读二进制文件为文本。使用Stream.CopyTo方法(或等效的代码,如果你不能使用.NET 4.0)
using(StreamReader sourceStream = ...){
using(Stream requestStream = request.GetRequestStream())
{
sourceStream.CopyTo(requestStream);
}
}
答
你可以尝试使用BufferedStream与原始字节处理。
答
在我的情况我不能使用Stream.Copy由阿列克谢在他的回答提出,因为我用的是.NET Framework 2.0的我,而不是只用一个流中读取二进制文件,StreamReader的设计用于读取文本文件只:
public static void sampleUpload()
{
// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://100.165.80.15:21/output/Group Dealer, Main Dealer, Zone, Branch, and Destination Report_20120927105003.pdf");
request.Method = WebRequestMethods.Ftp.UploadFile;
request.UseBinary = true;
// This example assumes the FTP site uses anonymous logon.
request.Credentials = new NetworkCredential("toc", "fid123!!");
// Copy the contents of the file to the request stream.
byte[] b = File.ReadAllBytes(sourceFile);
request.ContentLength = b.Length;
using (Stream s = request.GetRequestStream())
{
s.Write(b, 0, b.Length);
}
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription);
response.Close();
}
我在'StreamReader'上找不到'CopyTo()'方法,但是我可以在'Stream'上找到它。然后,我用StreamReader''FileStream'变革',但我得到了另一个问题。这种方式主要用于传送* .pdf文件的工作,但没有找到* .xlsx文件,它仍然损坏。 – Praditha
大声笑,我用的是损坏的文件:( – Praditha
@Praditha笑。:) – uSeRnAmEhAhAhAhAhA