C# 使用FTP
https://www.cnblogs.com/qiren5761/archive/2010/01/22/1654496.html 感谢大哥
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
//FTPUploadFile("127.0.0.1/zwx" , "administrator", "123123", "e:\\饭卡记录清单.xls");
//FTPDownloadFile("127.0.0.1/zwx", "administrator", "123123", "d:", "123.xls", "饭卡记录清单.xls");
string[] fileList = FTPGetFileList("127.0.0.1/zwx/1", "administrator", "123123");
for (int i = 0; i < fileList.Length; i++)
{
Console.WriteLine(fileList[i]);
}
Console.Read();
}
#region FTP获取文件列表
/// <summary>
/// FTP获取文件列表
/// </summary>
/// <param name="ftpServerIP"></param>
/// <param name="ftpUserID"></param>
/// <param name="ftpPassword"></param>
/// <returns></returns>
private static string[] FTPGetFileList(string ftpServerIP, string ftpUserID, string ftpPassword)
{
//响应结果
StringBuilder result = new StringBuilder();
//FTP请求
FtpWebRequest ftpRequest = null;
//FTP响应
WebResponse ftpResponse = null;
//FTP响应流
StreamReader ftpResponsStream = null;
try
{
//生成FTP请求
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/"));
//设置文件传输类型
ftpRequest.UseBinary = true;
//FTP登录
ftpRequest.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
//设置FTP方法
ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory;
//生成FTP响应
ftpResponse = ftpRequest.GetResponse();
//FTP响应流
ftpResponsStream = new StreamReader(ftpResponse.GetResponseStream());
string line = ftpResponsStream.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = ftpResponsStream.ReadLine();
}
//去掉结果列表中最后一个换行
result.Remove(result.ToString().LastIndexOf('\n'), 1);
//返回结果
return result.ToString().Split('\n');
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return (null);
}
finally
{
if (ftpResponsStream != null)
{
ftpResponsStream.Close();
}
if (ftpResponse != null)
{
ftpResponse.Close();
}
}
}
#endregion
#region FTP下载文件
/// <summary>
/// FTP下载文件
/// </summary>
/// <param name="ftpServerIP">FTP服务器IP</param>
/// <param name="ftpUserID">FTP登录帐号</param>
/// <param name="ftpPassword">FTP登录密码</param>
/// <param name="saveFilePath">保存文件路径</param>
/// <param name="saveFileName">保存文件名</param>
/// <param name="downloadFileName">下载文件名</param>
private static void FTPDownloadFile(string ftpServerIP, string ftpUserID, string ftpPassword,
string saveFilePath, string saveFileName, string downloadFileName)
{
//定义FTP请求对象
FtpWebRequest ftpRequest = null;
//定义FTP响应对象
FtpWebResponse ftpResponse = null;
//存储流
FileStream saveStream = null;
//FTP数据流
Stream ftpStream = null;
try
{
//生成下载文件
saveStream = new FileStream(saveFilePath + "\\" + saveFileName, FileMode.Create);
//生成FTP请求对象
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + downloadFileName));
//设置下载文件方法
ftpRequest.Method = WebRequestMethods.Ftp.DownloadFile;
//设置文件传输类型
ftpRequest.UseBinary = true;
//设置登录FTP帐号和密码
ftpRequest.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
//生成FTP响应对象
ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
//获取FTP响应流对象
ftpStream = ftpResponse.GetResponseStream();
//响应数据长度
long cl = ftpResponse.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
//接收FTP文件流
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
saveStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (ftpStream != null)
{
ftpStream.Close();
}
if (saveStream != null)
{
saveStream.Close();
}
if (ftpResponse != null)
{
ftpResponse.Close();
}
}
}
#endregion
#region FTP上传文件
/// <summary>
/// FTP上传文件
/// </summary>
/// <param name="ftpServerIP">FTP服务器IP</param>
/// <param name="ftpUserID">FTP登录帐号</param>
/// <param name="ftpPassword">FTP登录密码</param>
/// <param name="filename">上文件文件名（绝对路径）</param>
private static void FTPUploadFile(string ftpServerIP, string ftpUserID, string ftpPassword, string filename)
{
//上传文件
FileInfo uploadFile = null;
//上传文件流
FileStream uploadFileStream = null;
//FTP请求对象
FtpWebRequest ftpRequest = null;
//FTP流
Stream ftpStream = null;
try
{
//获取上传文件
uploadFile = new FileInfo(filename);
//创建FtpWebRequest对象
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + uploadFile.Name));
//FTP登录
ftpRequest.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
// 默认为true，连接不会被关闭
// 在一个命令之后被执行
ftpRequest.KeepAlive = false;
//FTP请求执行方法
ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;
// 指定数据传输类型
ftpRequest.UseBinary = true;
// 上传文件时通知服务器文件的大小
ftpRequest.ContentLength = uploadFile.Length;
// 缓冲大小设置为2kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
// 打开一个文件流读上传的文件
uploadFileStream = uploadFile.OpenRead();
// 把上传的文件写入流
ftpStream = ftpRequest.GetRequestStream();
// 每次读文件流的2kb
contentLen = uploadFileStream.Read(buff, 0, buffLength);
// 流内容没有结束
while (contentLen != 0)
{
// 把内容从file stream 写入 upload stream
ftpStream.Write(buff, 0, contentLen);
contentLen = uploadFileStream.Read(buff, 0, buffLength);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (uploadFileStream != null)
{
uploadFileStream.Close();
}
if (ftpStream != null)
{
ftpStream.Close();
}
}
}
#endregion
}
}
