直接上代码如下：
cs
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp2
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
FtpHelper ftpHelper = new FtpHelper("xxxxx", "","Administrator","1qaz@qwer");
string[] datas = ftpHelper.GetAllList(null);
Console.WriteLine(JsonConvert.SerializeObject(datas));
Console.ReadLine();
}
}
public class FtpHelper
{
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 FtpHelper(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)
{
ftpServerIP = FtpServerIP;
ftpRemotePath = FtpRemotePath;
ftpUserID = FtpUserID;
ftpPassword = FtpPassword;
if (string.IsNullOrEmpty(ftpRemotePath))
{
ftpURI = "ftp://" + ftpServerIP + "/";
}
else
{
ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
}
}
/// <summary>
/// 下载
/// </summary>
/// <param name="filePath">下载保存的文件夹路径</param>
/// <param name="fileName">文件名称</param>
public bool Download(string filePath, string fileName)
{
try
{
FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
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();
return true;
}
catch (Exception ex)
{
return false;
}
}
/// <summary>
/// 下载的异步方法
/// </summary>
/// <param name="filePath">下载保存的文件夹路径</param>
/// <param name="fileName">文件名称</param>
/// <returns></returns>
public Task<bool> DownloadAsync(string filePath, string fileName)
{
return Task.Run(() => { return Download(filePath, fileName); });
}
/// <summary>
/// 获取文件名称
/// </summary>
/// <param name="url">为空则获取根目录下所有</param>
/// <returns></returns>
public string[] GetAllList(string url)
{
List<string> list = new List<string>();
FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri(ftpURI));
req.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
req.Method = WebRequestMethods.Ftp.ListDirectory;
req.UseBinary = true;
req.UsePassive = true;
try
{
using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
{
using (StreamReader sr = new StreamReader(res.GetResponseStream()))
{
string s;
while ((s = sr.ReadLine()) != null)
{
list.Add(s);
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.StackTrace);
}
return list.ToArray();
}
/// <summary>
/// 获取当前目录下明细(包含文件和文件夹)
/// </summary>
public string[] GetFilesDetailList()
{
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)
{
throw new Exception(ex.Message);
}
}
/// <summary>
/// 移动文件
/// </summary>
public void MovieFile(string currentFilename, string newDirectory)
{
ReName(currentFilename, newDirectory);
}
/// <summary>
/// 更改文件名
/// </summary>
public bool 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();
return true;
}
catch (Exception ex)
{
return false;
}
}
/// <summary>
/// 获取指定文件大小
/// </summary>
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)
{
}
return fileSize;
}
/// <summary>
/// 创建文件夹
/// </summary>
public bool MakeDir(string dirName)
{
FtpWebRequest reqFTP;
try
{
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();
return true;
}
catch (Exception ex)
{
return false;
}
}
/// <summary>
/// 删除文件
/// </summary>
public bool Delete(string fileName)
{
try
{
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
reqFTP.KeepAlive = false;
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();
return true;
}
catch (Exception ex)
{
return false;
}
}
/// <summary>
/// 上传
/// </summary>
public bool Upload(string filename)
{
FileInfo fileInf = new FileInfo(filename);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileInf.Name));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.KeepAlive = false;
reqFTP.UseBinary = true;
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();
return true;
}
catch (Exception ex)
{
return false;
}
}
/// <summary>
/// 上传的异步方法
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public Task<bool> UploadAsync(string filename)
{
return Task.Run(() => { return Upload(filename); });
}
}
}