我使用以下源代码获取上传文件excel和pdf,但是在将文件移动到服务器后,该文件已损坏。我认为问题在于编码过程Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
,但我不知道如何解决它。
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();
}
答案 0 :(得分:5)
不要将二进制文件作为文本读取。使用Stream.CopyTo方法(如果不能使用.Net 4.0,则使用等效代码)
using(StreamReader sourceStream = ...){
using(Stream requestStream = request.GetRequestStream())
{
sourceStream.CopyTo(requestStream);
}
}
答案 1 :(得分:0)
您可以尝试使用处理原始字节的BufferedStream。
答案 2 :(得分:0)
在我的情况下,我不能像Alexei在他的回答中所建议的那样使用Stream.Copy因为我使用.NET Framework 2.0而只使用Stream来读取二进制文件,因为Streamreader仅用于读取文本文件:
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();
}