我就不信csdn上没人会用FtpWebRequest上传文件!

Question

public void ExportToFTP(string fullfilename,string filename)
        {
            DateTime dt = DateTime.Now;
            string subFolder = dt.Month + "-" + dt.Day + "-" + dt.Year;            string dt = @"ftp://www.aaa.com/" + subFolder + "/" +filename;
            
我就是想用FtpWebRequest实现上传到特定文件夹,文件夹为日期(3-21-2006),明天就把文件上传到
ftp://www.aaa.com/3-22-2006/中,现在我不知道该如何判断是否存在这个日期文件夹,如果没有我该如何创建???            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(dt);
            
            request.Method = WebRequestMethods.Ftp.UploadFile;
            request.Credentials = new NetworkCredential("upload", "6TXJAmrG");
            StreamReader sourceStream = new StreamReader(fullfilename);
            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();
        }

Answer 1

string subFolder = dt.Month + "-" + dt.Day + "-" + dt.Year;
string dt = @"ftp://www.aaa.com/" + subFolder + "/" +filename;
比如今天是3-21-2006日,那文件就应该上传到ftp://www.aaa.com/3-21-2006中,现在服务器中没有3-21-2006文件夹,运行出错!!!
也就是没有建立3-21-2006文件夹,现在我不知道该如何判断是否存在这个日期文件夹,如果没有我该如何创建???

Answer 2

using System.IO;
public void CreateSubDirectory(string path)//---------创建目录
{
DirectoryInfo directoryInfo=new DirectoryInfo(path);
if(directoryInfo.Exists!=true)
directoryInfo.Create();
directoryInfo=null;
}

Answer 3

using System.IO;
public void CreateSubDirectory(string path)//---------创建目录
{
 DirectoryInfo directoryInfo=new DirectoryInfo(path);
 if(directoryInfo.Exists!=true)
   directoryInfo.Create();
 directoryInfo=null;
}
path可以是ftp://www.aaa.com/3-16-2006/吗?

Answer 4

想问问你用的是2005哪个版本，我用FtpWebRequest类时，直接用MSDN上的代码都出错“the underlying connection was closed: The server committed a protocol violation.”，索性在http://forums.microsoft.com上搜了搜，说是该类有BUG，不知现在解决了没？你的没出现这个问题吧

Answer 5

<---make!还没有用过这个控件,做个标记.

Answer 6

你可以先请求FTP上这个文件夹中的一个文件,根据获取的流大小,判断文件是否存在,是则上传,否则就创建文件夹..下面是MSDN上的代码 ..参考下给你:===========================================static void Upload(string fileName, string uploadUrl)
        {
            Stream requestStream = null;
            FileStream fileStream = null;
            FtpWebResponse uploadResponse = null;
            try
            {
                FtpWebRequest uploadRequest =
                    (FtpWebRequest)WebRequest.Create(uploadUrl);
                uploadRequest.Method = WebRequestMethods.Ftp.UploadFile;                // UploadFile is not supported through an Http proxy
                // so we disable the proxy for this request.
                uploadRequest.Proxy = null;                requestStream = uploadRequest.GetRequestStream();
                fileStream = File.Open(fileName, FileMode.Open);                byte[] buffer = new byte[1024];
                int bytesRead;
                while (true)
                {
                    bytesRead = fileStream.Read(buffer, 0, buffer.Length);
                    if (bytesRead == 0)
                        break;
                    requestStream.Write(buffer, 0, bytesRead);
                }                // The request stream must be closed before getting 
                // the response.
                requestStream.Close();                uploadResponse =
                    (FtpWebResponse)uploadRequest.GetResponse();
                Console.WriteLine("Upload complete.");
            }
            catch (UriFormatException ex)
            {
                Console.WriteLine(ex.Message);
            }
            catch (IOException ex)
            {
                Console.WriteLine(ex.Message);
            }
            catch (WebException ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                if (uploadResponse != null)
                    uploadResponse.Close();
                if (fileStream != null)
                    fileStream.Close();
                if (requestStream != null)
                    requestStream.Close();
            }
        }

Answer 7

if (!Directory.Exists(path))
{
 Directory.CreateDirectory(path);
}