如何利用FTP上传多个文件？
FtpWebRequest reqFTP;
string uri = "ftp://xx.xx.xx.xx/";
string[] fileList = Directory.GetFileSystemEntries("x:\\xxx");
int buffLength = 2048;
foreach (string file in fileList)
{
try
{
FileInfo fileInf = new FileInfo(file);
//初始化FTP
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri + fileInf.Name));
reqFTP.Credentials = new NetworkCredential("xxx", "xxx");
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.UsePassive = false ;
reqFTP.ContentLength = fileInf.Length;
// 缓冲大小设置为2kb
byte[] buff = new byte[buffLength];
int contentLen;
// 打开一个文件流 (System.IO.FileStream) 去读上传的文件
FileStream fs = fileInf.OpenRead();
try
{
// 把上传的文件写入流
Stream strm = reqFTP.GetRequestStream();
// 每次读文件流的2kb
contentLen = fs.Read(buff, 0, buffLength);
// 流内容没有结束
while (contentLen != 0)
{
// 把内容从file stream 写入 upload stream
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
// 关闭两个流
strm.Close();
fs.Close();
//删除源文件
fileInf.Delete();
}
catch (Exception ex)
{
//MessageBox.Show(ex.Message, "Upload Error");
return;
}
}
catch (Exception exx)
{
//MessageBox.Show(exx.Message, "Upload Error");
return;
}
// File.Delete(file);
}
实际使用的时候容易返回421错误，是不是在对文件循环的时候重复初始化FTP引起的？
10 个解决方案
#1
没人知道啊？
#2
private static void UploadFile(string localFile)
{
FileInfo fi = new FileInfo(localFile);
FileStream fs = fi.OpenRead();
long length = fs.Length;
FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + FtpRemotePath + fi.Name);
req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
req.Method = WebRequestMethods.Ftp.UploadFile;
req.UseBinary = true;
req.ContentLength = length;
req.Timeout = 10 * 1000;
try
{
Stream stream = req.GetRequestStream();
int BufferLength = 2048;
byte[] b = new byte[BufferLength];
int i;
while ((i = fs.Read(b, 0, BufferLength)) > 0)
{
stream.Write(b, 0, i);
}
stream.Close();
stream.Dispose();
}
catch (Exception ex)
{
}
}
{
FileInfo fi = new FileInfo(localFile);
FileStream fs = fi.OpenRead();
long length = fs.Length;
FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + FtpRemotePath + fi.Name);
req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
req.Method = WebRequestMethods.Ftp.UploadFile;
req.UseBinary = true;
req.ContentLength = length;
req.Timeout = 10 * 1000;
try
{
Stream stream = req.GetRequestStream();
int BufferLength = 2048;
byte[] b = new byte[BufferLength];
int i;
while ((i = fs.Read(b, 0, BufferLength)) > 0)
{
stream.Write(b, 0, i);
}
stream.Close();
stream.Dispose();
}
catch (Exception ex)
{
}
}
#3
狠人来了吼吼，帮人帮到底，我是来抢分的
一、批量文件上传。
//FtpURL：要上传到的FTP路径。
Uri uriAddress = new Uri(FtpURL);
//filename：上传前的文件名数组；filenames：上传后的文件名数组；UserName：FTP用户名； PassWord：FTP密码。
FileCopys(filename, uriAddress, filenames, UserName, PassWord);
#region 数据批量上传
protected void FileCopys(string[] fileName, Uri uploadUrl, string[] fileNameS, string username, string password)
{
try
{
for (int i = 0; i < fileNameS.Length; i++)
{
if (uploadUrl.Scheme == Uri.UriSchemeFtp)
{
FileInfo fileInf = new FileInfo(fileName[i]);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uploadUrl + fileNameS[i]));
reqFTP.Credentials = new NetworkCredential(username, password);
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.KeepAlive = false;
reqFTP.UseBinary = false;
reqFTP.ContentLength = fileInf.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
FileStream fs = fileInf.OpenRead();
Stream strm = reqFTP.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);
int allbye = (int)fileInf.Length;
int startbye = 0;
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
startbye += contentLen;
}
strm.Close();
fs.Close();
}
}
}
catch
{
}
}
#endregion
二、单个文件上传
//FtpURL：要上传到的FTP路径。
Uri uriAddress = new Uri(FtpURL);
//filename：需要上传的文件名；filename：上传后的文件名；UserName：FTP用户名； PassWord：FTP密码。
FileCopy(filename, uriAddress, filename, UserName, PassWord);
protected void FileCopy(string fileName, Uri uploadUrl, string fileNameS, string username, string password)
{
//FileCopy(InitFile1, uriAddress, FileNames1, UserName, PassWord);
//FileCopy(InitFile5, uriAddress, FileNames5, UserName, PassWord);
//FileCopy(InitFile6, uriAddress, FileNames6, UserName, PassWord);
//FileCopy(InitFile7, uriAddress, FileNames7, UserName, PassWord);
//FileCopy(InitFile8, uriAddress, FileNames8, UserName, PassWord);
//FileCopy(InitFile9, uriAddress, FileNames9, UserName, PassWord);
//FileCopy(InitFile11, uriAddress, FileNames11, UserName, PassWord);
try
{
if (uploadUrl.Scheme == Uri.UriSchemeFtp)
{
FileInfo fileInf = new FileInfo(fileName);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uploadUrl + fileNameS));
reqFTP.Credentials = new NetworkCredential(username, password);
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.KeepAlive = false;
reqFTP.UseBinary = false;
reqFTP.ContentLength = fileInf.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
FileStream fs = fileInf.OpenRead();
Stream strm = reqFTP.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);
int allbye = (int)fileInf.Length;
int startbye = 0;
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
startbye += contentLen;
}
strm.Close();
fs.Close();
}
}
catch
{
//MessageBox.Show("FTP站点用户名或密码错误,请与管理员联系！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
}
#4
晕，如梦怎么这么快啊~~~~~~~~~~~~~~郁闷
#5
楼主直接把我的方法拷贝下来，在你的程序引用方法即可。多文件单文件上传只要调用方法就行了，很方便
#6
Stream strm = reqFTP.GetRequestStream();
上面这一句很容易产生“连接超时”的异常，不知道为什么
上面这一句很容易产生“连接超时”的异常，不知道为什么
#7
你的测试网络环境是怎样的呢？
#8
网络正常啊，我用FTP工具上传都没有问题的
#9
@yalan,您多文件上传的代码，我放在程序中不行，一个都上传上去，报550错误。
#10
报这个错误是因为你们的方法中都多次new了这个 reqFTP.Credentials = new NetworkCredential(username, password); 在同一个帐户连接时多次new就会报550错误，单文件上传也不例外，需要优化，我以前做这个的时候就被这个折腾了下，给你个解决方案： ftpWebRqt = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpServer));
if (isnewNetWork == false || networkCredential.UserName != username || networkCredential.Password != password)
{
networkCredential = new NetworkCredential(username, password);
isnewNetWork = true;
}
ftpWebRqt.Credentials = networkCredential;
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