求C# FTP下载文件夹的代码,该怎么处理
求C# FTP下载文件夹的代码
各位高手：
我想要实现FTP下载一个目录下所有内容（包括文件以及子目录等等）的功能。
请高手给我一个可以执行的完整代码。
注：不要给我粘贴各种链接，我也查过，但是很多都不能用，所以请大侠们试验一下，把好用的代码提供一下，我将万分感谢！
------解决方案--------------------
各位高手：
我想要实现FTP下载一个目录下所有内容（包括文件以及子目录等等）的功能。
请高手给我一个可以执行的完整代码。
注：不要给我粘贴各种链接，我也查过，但是很多都不能用，所以请大侠们试验一下，把好用的代码提供一下，我将万分感谢！
------解决方案--------------------
- C# code
private void Download(string filePath, string fileName)
{
FtpWebRequest reqFTP;
try
{
FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileName));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
------解决方案--------------------
完整一点
- C# code
public class FtpFile
{
string ftpServerIP;
public string FtpServerIP
{
get { return ftpServerIP; }
set { ftpServerIP = value; }
}
string ftpUserID;
public string FtpUserID
{
get { return ftpUserID; }
set { ftpUserID = value; }
}
string ftpPassword;
public string FtpPassword
{
get { return ftpPassword; }
set { ftpPassword = value; }
}
FtpWebRequest reqFTP;
public static string FtpServer = System.Configuration.ConfigurationSettings.AppSettings["FtpServer"];
public static string FtpUser = System.Configuration.ConfigurationSettings.AppSettings["FtpUser"];
public static string FtpPwd = System.Configuration.ConfigurationSettings.AppSettings["FtpPwd"];
private void Connect(String path)//连接ftp
{
// 根据uri创建FtpWebRequest对象
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));
// 指定数据传输类型
reqFTP.UseBinary = true;
// ftp用户名和密码
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
}
public FtpFile(string ftpServerIP, string ftpUserID, string ftpPassword)
{
this.ftpServerIP = ftpServerIP;
this.ftpUserID = ftpUserID;
this.ftpPassword = ftpPassword;
}
public FtpFile()
{
this.ftpServerIP = FtpServer;
this.ftpUserID = FtpUser;
this.ftpPassword = FtpPwd;
}
------解决方案--------------------
- C# code
//都调用这个
private string[] GetFileList(string path, string WRMethods)//上面的代码示例了如何从ftp服务器上获得文件列表
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
try
{
Connect(path);
reqFTP.Method = WRMethods;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.UTF8);//中文文件名
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
// to remove the trailing '\n'
result.Remove(result.ToString().LastIndexOf('\n'), 1);
reader.Close();
response.Close();
return result.ToString().Split('\n');
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
downloadFiles = null;
return downloadFiles;
}
}
public string[] GetFileList(string path)//上面的代码示例了如何从ftp服务器上获得文件列表
{
return GetFileList("ftp://" + ftpServerIP + path, WebRequestMethods.Ftp.ListDirectory);
}
public string[] GetFileList()//上面的代码示例了如何从ftp服务器上获得文件列表
{
return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory);
}
public string Upload(string filedir, string filename) //上面的代码实现了从ftp服务器上载文件的功能
{
FileInfo fileInf = new FileInfo(filename);
string uri = "ftp://" + ftpServerIP + filedir + fileInf.Name;
Connect(uri);//连接
// 默认为true，连接不会被关闭
// 在一个命令之后被执行
reqFTP.KeepAlive = false;
// 指定执行什么命令
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
// 上传文件时通知服务器文件的大小
reqFTP.ContentLength = fileInf.Length;
// 缓冲大小设置为kb
int buffLength = 2048 * 5;
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kb
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();
return "";
}
catch (Exception ex)
{
return "Upload Error" + ex.Message;
}
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="filedir">文件夹地址：必须是服务器根级相对地址，比如"/ftpFiles/images"</param>
/// <param name="filePath">下载文件新路径，但不包含文件名，如：D:\Photo</param>
/// <param name="fileName">ftp文件绝对路径,如:ftp://127.0.0.1/Photo/1.bmp</param>
/// <returns></returns>
public string Download(string filedir, string filePath, string fileName)////上面的代码实现了从ftp服务器下载文件的功能
{
try
{
String onlyFileName = Path.GetFileName(fileName);
string newFileName = filePath + "\\" + onlyFileName;
if (File.Exists(newFileName))
{
return "本地文件" + newFileName + "已存在,无法下载";
}
string url = "ftp://" + ftpServerIP + filedir + onlyFileName;
Connect(url);//连接
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048 * 5;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
FileStream outputStream = new FileStream(newFileName, FileMode.Create);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
return "";
}
catch (Exception ex)
{
return "因" + ex.Message + ",无法下载";
}
}
//删除文件
public void DeleteFileName(string filedir, string fileName)
{
try
{
string fName = Path.GetFileName(fileName);
string uri = "ftp://" + ftpServerIP + filedir + fName;
Connect(uri);//连接
// 默认为true，连接不会被关闭
// 在一个命令之后被执行
reqFTP.KeepAlive = false;
// 指定执行什么命令
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "删除错误");
}
}
//创建目录
public string MakeDir(string dirName)
{
try
{
string uri = "ftp://" + ftpServerIP + "/" + dirName;
Connect(uri);//连接
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
return "";
}
catch (WebException ex)
{
return "[Make Dir]" + ex.Message;
}
}
//删除目录
public void delDir(string dirName)
{
try
{
string uri = "ftp://" + ftpServerIP + "/" + dirName;
Connect(uri);//连接
reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
//获得文件大小
public long GetFileSize(string filename)
{
long fileSize = 0;
try
{
FileInfo fileInf = new FileInfo(filename);
string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;
Connect(uri);//连接
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
fileSize = response.ContentLength;
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return fileSize;
}
//文件改名
public void Rename(string currentFilename, string newFilename)
{
try
{
FileInfo fileInf = new FileInfo(currentFilename);
string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;
Connect(uri);//连接
reqFTP.Method = WebRequestMethods.Ftp.Rename;
reqFTP.RenameTo = newFilename;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
//Stream ftpStream = response.GetResponseStream();
//ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
//获得文件明晰
public string[] GetFilesDetailList()
{
return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails);
}
//获得文件明晰
public string[] GetFilesDetailList(string path)
{
return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectoryDetails);
}
}