本文实例讲述了C#操作ftp类。分享给大家供大家参考。具体如下：
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Globalization;
namespace FtpTest1
{
public class FtpWeb
{
string ftpServerIP;
string ftpRemotePath;
string ftpUserID;
string ftpPassword;
string ftpURI;
/// <summary>
/// 连接FTP
/// </summary>
/// <param name="FtpServerIP">FTP连接地址</param>
/// <param name="FtpRemotePath">指定FTP连接成功后的当前目录, 如果不指定即默认为根目录</param>
/// <param name="FtpUserID">用户名</param>
/// <param name="FtpPassword">密码</param>
public FtpWeb( string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)
{
ftpServerIP = FtpServerIP;
ftpRemotePath = FtpRemotePath;
ftpUserID = FtpUserID;
ftpPassword = FtpPassword;
ftpURI = "ftp://" + ftpServerIP + "/" ;
}
static void Main() {
//string file = "c:\\aq3.gifa";
//FileInfo fileInf = new FileInfo(file);
//if (!fileInf.Exists)
//{
// Console.WriteLine(file + " no exists");
//}
//else {
// Console.WriteLine("yes");
//}
//Console.ReadLine();
FtpWeb fw = new FtpWeb( "121.11.65.10" , "" , "aa1" , "aa" );
string [] filePaths = { "c:\\aq3.gif1" , "c:\\aq2.gif1" , "c:\\bsmain_runtime.log" };
Console.WriteLine(fw.UploadFile(filePaths));
Console.ReadLine();
}
//上传文件
public string UploadFile( string [] filePaths ) {
StringBuilder sb = new StringBuilder();
if ( filePaths != null && filePaths.Length > 0 ){
foreach ( var file in filePaths ){
sb.Append(Upload( file ));
}
}
return sb.ToString();
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="filename"></param>
private string Upload( string filename)
{
FileInfo fileInf = new FileInfo(filename);
if ( !fileInf.Exists ){
return filename + " 不存在!\n" ;
}
string uri = ftpURI + fileInf.Name;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create( new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false ;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true ;
reqFTP.UsePassive = false ; //选择主动还是被动模式
//Entering Passive Mode
reqFTP.ContentLength = fileInf.Length;
int buffLength = 2048;
byte [] buff = new byte [buffLength];
int contentLen;
FileStream fs = fileInf.OpenRead();
try
{
Stream strm = reqFTP.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
strm.Close();
fs.Close();
}
catch (Exception ex)
{
return "同步 " +filename+ "时连接不上服务器!\n" ;
//Insert_Standard_ErrorLog.Insert("FtpWeb", "Upload Error --> " + ex.Message);
}
return "" ;
}
/// <summary>
/// 下载
/// </summary>
/// <param name="filePath"></param>
/// <param name="fileName"></param>
public void Download( string filePath, string fileName)
{
FtpWebRequest reqFTP;
try
{
FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create( new Uri(ftpURI + 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)
{
Insert_Standard_ErrorLog.Insert( "FtpWeb" , "Download Error --> " + ex.Message);
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="fileName"></param>
public void Delete( string fileName)
{
try
{
string uri = ftpURI + fileName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create( new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false ;
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
}
catch (Exception ex)
{
Insert_Standard_ErrorLog.Insert( "FtpWeb" , "Delete Error --> " + ex.Message + " 文件名:" + fileName);
}
}
/// <summary>
/// 获取当前目录下明细(包含文件和文件夹)
/// </summary>
/// <returns></returns>
public string [] GetFilesDetailList()
{
string [] downloadFiles;
try
{
StringBuilder result = new StringBuilder();
FtpWebRequest ftp;
ftp = (FtpWebRequest)FtpWebRequest.Create( new Uri(ftpURI));
ftp.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
WebResponse response = ftp.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
line = reader.ReadLine();
line = reader.ReadLine();
while (line != null )
{
result.Append(line);
result.Append( "\n" );
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf( "\n" ), 1);
reader.Close();
response.Close();
return result.ToString().Split( '\n' );
}
catch (Exception ex)
{
downloadFiles = null ;
Insert_Standard_ErrorLog.Insert( "FtpWeb" , "GetFilesDetailList Error --> " + ex.Message);
return downloadFiles;
}
}
/// <summary>
/// 获取当前目录下文件列表(仅文件)
/// </summary>
/// <returns></returns>
public string [] GetFileList( string mask)
{
string [] downloadFiles;
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create( new Uri(ftpURI));
reqFTP.UseBinary = true ;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
while (line != null )
{
if (mask.Trim() != string .Empty && mask.Trim() != "*.*" )
{
string mask_ = mask.Substring(0, mask.IndexOf( "*" ));
if (line.Substring(0, mask_.Length) == mask_)
{
result.Append(line);
result.Append( "\n" );
}
}
else
{
result.Append(line);
result.Append( "\n" );
}
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf( '\n' ), 1);
reader.Close();
response.Close();
return result.ToString().Split( '\n' );
}
catch (Exception ex)
{
downloadFiles = null ;
if (ex.Message.Trim() != "远程服务器返回错误: (550) 文件不可用(例如，未找到文件，无法访问文件)。" )
{
Insert_Standard_ErrorLog.Insert( "FtpWeb" , "GetFileList Error --> " + ex.Message.ToString());
}
return downloadFiles;
}
}
/// <summary>
/// 获取当前目录下所有的文件夹列表(仅文件夹)
/// </summary>
/// <returns></returns>
public string [] GetDirectoryList()
{
string [] drectory = GetFilesDetailList();
string m = string .Empty;
foreach ( string str in drectory)
{
if (str.Trim().Substring(0, 1).ToUpper() == "D" )
{
m += str.Substring(54).Trim() + "\n" ;
}
}
char [] n = new char [] { '\n' };
return m.Split(n);
}
/// <summary>
/// 判断当前目录下指定的子目录是否存在
/// </summary>
/// <param name="RemoteDirectoryName">指定的目录名</param>
public bool DirectoryExist( string RemoteDirectoryName)
{
string [] dirList = GetDirectoryList();
foreach ( string str in dirList)
{
if (str.Trim() == RemoteDirectoryName.Trim())
{
return true ;
}
}
return false ;
}
/// <summary>
/// 判断当前目录下指定的文件是否存在
/// </summary>
/// <param name="RemoteFileName">远程文件名</param>
public bool FileExist( string RemoteFileName)
{
string [] fileList = GetFileList( "*.*" );
foreach ( string str in fileList)
{
if (str.Trim() == RemoteFileName.Trim())
{
return true ;
}
}
return false ;
}
/// <summary>
/// 创建文件夹
/// </summary>
/// <param name="dirName"></param>
public void MakeDir( string dirName)
{
FtpWebRequest reqFTP;
try
{
// dirName = name of the directory to create.
reqFTP = (FtpWebRequest)FtpWebRequest.Create( new Uri(ftpURI + dirName));
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.UseBinary = true ;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
Insert_Standard_ErrorLog.Insert( "FtpWeb" , "MakeDir Error --> " + ex.Message);
}
}
/// <summary>
/// 获取指定文件大小
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public long GetFileSize( string filename)
{
FtpWebRequest reqFTP;
long fileSize = 0;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create( new Uri(ftpURI + filename));
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
reqFTP.UseBinary = true ;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
fileSize = response.ContentLength;
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
Insert_Standard_ErrorLog.Insert( "FtpWeb" , "GetFileSize Error --> " + ex.Message);
}
return fileSize;
}
/// <summary>
/// 改名
/// </summary>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
public void ReName( string currentFilename, string newFilename)
{
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create( new Uri(ftpURI + currentFilename));
reqFTP.Method = WebRequestMethods.Ftp.Rename;
reqFTP.RenameTo = newFilename;
reqFTP.UseBinary = true ;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
Insert_Standard_ErrorLog.Insert( "FtpWeb" , "ReName Error --> " + ex.Message);
}
}
/// <summary>
/// 移动文件
/// </summary>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
public void MovieFile( string currentFilename, string newDirectory)
{
ReName(currentFilename, newDirectory);
}
希望本文所述对大家的C#程序设计有所帮助。
dy("nrwz");