C#-文件上载到服务器后已损坏
我使用以下源代码上传文件excel和pdf,但在文件被移动到服务器后,文件已损坏。我认为问题在于编码过程C#-文件上载到服务器后已损坏,c#,file-upload,ftp,C#,File Upload,Ftp,我使用以下源代码上传文件excel和pdf,但在文件被移动到服务器后,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 = (F
encoding.UTF8.GetBytes(sourceStream.ReadToEnd())代码>,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();
}
不要将二进制文件作为文本读取。使用方法(如果不能使用.Net 4.0,则使用等效代码)
您可以尝试使用处理原始字节的BufferedStream。在我的情况下,我无法使用Stream.Copy,正如Alexei在回答中所建议的那样,因为我使用的是.NET Framework 2.0,所以我只使用流读取二进制文件,因为Streamreader设计为只读取文本文件:
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();
}
我在StreamReader
上找不到CopyTo()
方法,但我可以在Stream
上找到它。然后,我使用FileStream
进行更改StreamReader
,但我遇到了另一个问题。这种方式适用于传输*.pdf文件,但不适用于*.xlsx文件,它仍然损坏。LOL,我使用损坏的文件:(
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();
}