前言：如果未搭建FTP服务器请先搭建
文章包含了对FTP服务器的操作有以下几种（暂以前三种做说明）
删除文件
下载文件
上传文件
获取当前目录下明细(包含文件和文件夹)
获取FTP文件列表(包括文件夹)
获取当前目录下文件列表(不包括文件夹)
判断当前目录下指定的文件是否存在
创建文件夹
获取指定文件大小
更改文件名
移动文件
切换当前目录
下面的获取指定文件夹里面的文件列表代码错误 更改为如下：
///步骤/// 获取指定文件夹下文件列表(不包括文件夹) /// public string[] GetFileList(string mask, string dirName) { string[] downloadFiles = null; StringBuilder result = new StringBuilder(); FtpWebRequest reqFTP; try { reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + dirName)); reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); reqFTP.Method = WebRequestMethods.Ftp.ListDirectory; WebResponse response = reqFTP.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default); 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(); } if (result.Length == 0) return new string[] { }; result.Remove(result.ToString().LastIndexOf('n'), 1); reader.Close(); response.Close(); downloadFiles = result.ToString().Split('n'); } catch (Exception ex) { return new string[] { }; } if (downloadFiles == null) downloadFiles = new string[] { }; return downloadFiles; }
- 创建winform项目
- 添加FTPHelper类
- 添加控件
- 添加控件的事件
- 实现操作
解决方案中右击鼠标项目文件 新建一个类
在类里面添加下面的核心代码
以下代码包含了对FTP服务器常用的操作
例如上传文件到FTP服务器 从FTP服务器上下载文件 删除FTP服务器上的文件等
注意需要添加的命名空间有
using System.Net;
using System.IO;
using System.Windows.Forms;
using System.Text.RegularExpressions;
#region 字段
string ftpURI;
string ftpUserID;
string ftpServerIP;
string ftpPassword;
string ftpRemotePath;
#endregion
///
/// 连接FTP服务器
///
/// FTP连接地址
/// 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
/// 用户名
/// 密码
public FTPHeper(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)
{
ftpServerIP = FtpServerIP;
ftpRemotePath = FtpRemotePath;
ftpUserID = FtpUserID;
ftpPassword = FtpPassword;
//ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath;
}
///
/// 上传 filename是本地图片的地址
///
public void 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();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
///
/// 下载 filePath是下载到本机的地址fileName是需要下载的文件的名字
///
public void 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();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
///
/// 删除服务器的文件 fileName是需要删除的文件的名字
///
public void 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();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
///
/// 获取当前目录下明细(包含文件和文件夹)
///
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);
}
}
///
/// 获取FTP文件列表(包括文件夹)
///
private string[] GetAllList(string url)
{
List list = new List();
FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri(url));
req.Credentials = new NetworkCredential(ftpPassword, 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)
{
throw (ex);
}
return list.ToArray();
}
///
/// 获取当前目录下文件列表(不包括文件夹)
///
public string[] GetFileList(string url)
{
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpPassword, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
while (line != null)
{
if (line.IndexOf("") == -1)
{
result.Append(Regex.Match(line, @"[S]+ [S]+", RegexOptions.IgnoreCase).Value.Split(' ')[1]);
result.Append("n");
}
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf('n'), 1);
reader.Close();
response.Close();
}
catch (Exception ex)
{
throw (ex);
}
return result.ToString().Split('n');
}
///
/// 判断当前目录下指定的文件是否存在
///
/// 远程文件名
public bool FileExist(string RemoteFileName)
{
string[] fileList = GetFileList("*.*");
foreach (string str in fileList)
{
if (str.Trim() == RemoteFileName.Trim())
{
return true;
}
}
return false;
}
///
/// 创建文件夹
///
public void 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();
}
catch (Exception ex)
{ }
}
///
/// 获取指定文件大小
///
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;
}
///
/// 更改文件名
///
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)
{ }
}
///
/// 移动文件
///
public void MovieFile(string currentFilename, string newDirectory)
{
ReName(currentFilename, newDirectory);
}
///
/// 切换当前目录
///
/// true:绝对路径 false:相对路径
public void GotoDirectory(string DirectoryName, bool IsRoot)
{
if (IsRoot)
{
ftpRemotePath = DirectoryName;
}
else
{
ftpRemotePath += DirectoryName + "/";
}
ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
}
///
/// 删除ftpURI目录下指定的文件夹
///
public void deleteDir(string dirName)
{
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + dirName));
reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;
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)
{
throw new Exception(ex.Message);
}
}
添加控件
添加三个按钮button1 button2 button3
添加控件事件private void button1_Click(object sender, EventArgs e)
{
//第二个参数为“” 意味着默认FTP的根目录 （上面新建的FTPHeper类的代码中有说明）
FTPHeper fTPHeper = new FTPHeper("FTP服务器的IP地址", "", "FTP用户名", "FTP密码");
//将本地路径为C:Users小何程序员Desktop截图2021-01devenv_Ji9KAmB1mJ.png 的图片上传到服务器根目录中
fTPHeper.Upload(@"C:Users小何程序员Desktop截图2021-01devenv_Ji9KAmB1mJ.png");
}
private void button2_Click(object sender, EventArgs e)
{
FTPHeper fTPHeper = new FTPHeper("FTP服务器的IP地址", "", "FTP用户名", "FTP密码");
//在FTP服务器根目录中将名字为devenv_Ji9KAmB1mJ.png的图片文件下载到本地D:develop_filesc#_windorms_for_vs_file位置中
fTPHeper.Download(@"D:develop_filesc#_windorms_for_vs_file", "devenv_Ji9KAmB1mJ.png");
}
private void button3_Click(object sender, EventArgs e)
{
FTPHeper fTPHeper = new FTPHeper("FTP服务器的IP地址", "", "FTP用户名", "FTP密码");
//删除FTP服务器根目录中名字为devenv_Ji9KAmB1mJ.png的图片文件
fTPHeper.Delete("devenv_Ji9KAmB1mJ.png");
}
实现操作
运行项目 即可远程操作服务器
