Ftp实习文件上传，下载单个件及文件夹下面所有文件，获取文件列表功能

#region Windows 窗体设计器生成的代码

/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(frmList));
this.btnDown = new System.Windows.Forms.Button();
this.btnGetList = new System.Windows.Forms.Button();
this.treeView1 = new System.Windows.Forms.TreeView();
this.imageList1 = new System.Windows.Forms.ImageList(this.components);
this.contextMenuStrip1 = new System.Windows.Forms.ContextMenuStrip(this.components);
this.下载浏览ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
this.webBrowser1 = new System.Windows.Forms.WebBrowser();
this.文件上传ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
this.contextMenuStrip1.SuspendLayout();
this.SuspendLayout();
//
// btnDown
//
this.btnDown.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.btnDown.Location = new System.Drawing.Point(14, 597);
this.btnDown.Name = "btnDown";
this.btnDown.Size = new System.Drawing.Size(75, 23);
this.btnDown.TabIndex = 0;
this.btnDown.Text = "下载文件";
this.btnDown.UseVisualStyleBackColor = true;
//
// btnGetList
//
this.btnGetList.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.btnGetList.Location = new System.Drawing.Point(95, 597);
this.btnGetList.Name = "btnGetList";
this.btnGetList.Size = new System.Drawing.Size(75, 23);
this.btnGetList.TabIndex = 0;
this.btnGetList.Text = "获取文件列表";
this.btnGetList.UseVisualStyleBackColor = true;
this.btnGetList.Click += new System.EventHandler(this.btnGetList_Click);
//
// treeView1
//
this.treeView1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)));
this.treeView1.ImageIndex = 0;
this.treeView1.ImageList = this.imageList1;
this.treeView1.Location = new System.Drawing.Point(12, 12);
this.treeView1.Name = "treeView1";
this.treeView1.SelectedImageIndex = 0;
this.treeView1.Size = new System.Drawing.Size(207, 579);
this.treeView1.TabIndex = 1;
this.treeView1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.treeView1_MouseDown);
//
// imageList1
//
this.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageList1.ImageStream")));
this.imageList1.TransparentColor = System.Drawing.Color.Transparent;
this.imageList1.Images.SetKeyName(0, "folderopen.ico");
//
// contextMenuStrip1
//
this.contextMenuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.下载浏览ToolStripMenuItem,
this.文件上传ToolStripMenuItem});
this.contextMenuStrip1.Name = "contextMenuStrip1";
this.contextMenuStrip1.RenderMode = System.Windows.Forms.ToolStripRenderMode.System;
this.contextMenuStrip1.Size = new System.Drawing.Size(153, 70);
//
// 下载浏览ToolStripMenuItem
//
this.下载浏览ToolStripMenuItem.Name = "下载浏览ToolStripMenuItem";
this.下载浏览ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
this.下载浏览ToolStripMenuItem.Text = "下载浏览";
this.下载浏览ToolStripMenuItem.Click += new System.EventHandler(this.下载浏览ToolStripMenuItem_Click);
//
// webBrowser1
//
this.webBrowser1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.webBrowser1.Location = new System.Drawing.Point(241, 12);
this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 20);
this.webBrowser1.Name = "webBrowser1";
this.webBrowser1.Size = new System.Drawing.Size(553, 579);
this.webBrowser1.TabIndex = 3;
//
// 文件上传ToolStripMenuItem
//
this.文件上传ToolStripMenuItem.Name = "文件上传ToolStripMenuItem";
this.文件上传ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
this.文件上传ToolStripMenuItem.Text = "文件上传";
this.文件上传ToolStripMenuItem.Click += new System.EventHandler(this.文件上传ToolStripMenuItem_Click);
//
// frmList
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(806, 632);
this.Controls.Add(this.treeView1);
this.Controls.Add(this.webBrowser1);
this.Controls.Add(this.btnGetList);
this.Controls.Add(this.btnDown);
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "frmList";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "公告下载浏览";
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
this.Load += new System.EventHandler(this.Form1_Load);
this.contextMenuStrip1.ResumeLayout(false);
this.ResumeLayout(false);

}

#endregion

class FtpDownLoad
{
private string password;
public string Password
{
get { return password; }
set { password = value; }
}
private string userName;
public string UserName
{
get { return userName; }
set { userName = value; }
}
private string ftpServerIP;
public string FtpServerIP
{
get { return ftpServerIP; }
set { ftpServerIP = value; }
}

public FtpDownLoad( string userName,string password)
{
this.password = password;
this.userName=userName;
}
#region ---------连接ftp ConnFtp(string ftpServerIP)
/// <summary>
/// 连接ftp
/// </summary>
public void ConnFtp(string ftpServerIP)
{
try
{
FtpWebRequest ftpRequest = null;
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpServerIP));//创建实现文件传输协议ftp客户端
ftpRequest.UseBinary = true;//指定文件传输类型
ftpRequest.Credentials = new NetworkCredential(userName, password);//获取设置与ftp服务器通信凭证
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
#endregion

#region ---------获取文件详细目录 string[] GetDetailList(string ftpServerIP)
/// <summary>
/// 获取文件详细目录
/// </summary>
/// ftppath ftp上文件路径 如：ftp://192.168.1.1//wangqihe
/// <returns></returns>
public string[] GetDetailList(string ftppath)
{
try
{
StringBuilder list = new StringBuilder();//存放文件名，大小 等信息
FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftppath));//创建实现文件传输协议ftp客户端
request.Credentials = new NetworkCredential(userName, password);//获取设置与ftp服务器通信凭证
request.KeepAlive = false;
request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;//表示获取ftp文件详细信息
WebResponse reponse = request.GetResponse();
long filelength = reponse.ContentLength;//获取文件长度
StreamReader reader = new StreamReader(reponse.GetResponseStream(), System.Text.Encoding.Default);
string line = reader.ReadLine();
while (line != null)
{
list.Append(line);
list.Append("龘");//用不常用字方便进行分割
line = reader.ReadLine();
}
reader.Close();
reponse.Close();
return list.ToString().Split('龘');
}
catch (Exception ex)
{
return null;
throw;
}
}
#endregion

#region ---------只获取ftp文件 string[] GetDirectoryList(string path)
/// <summary>
/// 只获取ftp文件
/// </summary>
/// <returns></returns>
public string[] GetDirectoryList(string path)
{
string[] list = GetDetailList(path);
string m = "";
for (int i = 0; i < list.Length - 1; i++)
{
int dirPos = list[i].IndexOf("<DIR>");
if (dirPos > 0)
{
/*判断 Windows 风格*/
m += list[i].Substring(dirPos + 5).Trim() + "\n";
}
else if (list[i].Trim().Substring(0, 1).ToUpper() == "D")
{
/*判断 Unix 风格*/
string dir = list[i].Substring(54).Trim();
if (dir != "." && dir != "..")
{
m += dir + "\n";
}
}
}
return m.Split('\n');
}
#endregion

#region ---------判断文件是否为文件夹 bool IsFolder(string strName)
public bool IsFolder(string strName)
{
string m = string.Empty;
int dirPos = strName.IndexOf("<DIR>");
if (dirPos > 0)
{
/*判断 Windows 风格*/
m += strName.Substring(dirPos + 5).Trim() + "\n";
return true;
}
else if (strName.Trim().Substring(0, 1).ToUpper() == "D")
{
/*判断 Unix 风格*/
string dir = strName.Substring(54).Trim();
if (dir != "." && dir != "..")
{
m += dir + "\n";
return true;
}
}
return false;
}
#endregion

#region ---------单个文件下载方法 void download(string adss, string ftpadss)
/// <summary>
/// 单个文件下载方法
/// </summary>
/// <param name="adss">保存文件的本地路径</param>
/// <param name="ftpadss">下载文件的FTP路径</param>
public void download(string adss, string ftpadss)
{
try
{
//FileMode常数确定如何打开或创建文件,指定操作系统应创建新文件。
//FileMode.Create如果文件已存在，它将被改写
FileStream outputStream = new FileStream(adss, FileMode.Create);
FtpWebRequest downRequest = (FtpWebRequest)WebRequest.Create(new Uri(ftpadss));
//设置要发送到 FTP 服务器的命令
downRequest.Credentials = new NetworkCredential(userName, password);
downRequest.Method = WebRequestMethods.Ftp.DownloadFile;
FtpWebResponse response = (FtpWebResponse)downRequest.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;//ftp上获取文件的长度
int bufferSize = 2048;//一次获取文件大小 为 2M
int readCount;
byte[] buffer = new byte[bufferSize];//设置缓存区
readCount = ftpStream.Read(buffer, 0, bufferSize);//从当前流中读取字节到缓存 buffer中  readCount读取字节数
while (readCount > 0)//读取字节数大于O循环读取
{
outputStream.Write(buffer, 0, readCount);//从缓存区读取字节到流中
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
#endregion
/// </summary>
/// <param name="ftpads">FTP地址路径</param>
/// <param name="name">我们所选择的文件或者文件夹名字</param>
/// <param name="type">要发送到FTP服务器的命令</param>
/// <returns></returns>
public string[] ftp(string ftpads, string name, string type)
{
WebResponse webresp = null;
StreamReader ftpFileListReader = null;
FtpWebRequest ftpRequest = null;
try
{
ftpRequest = (FtpWebRequest)WebRequest.Create(new Uri(ftpads + name));
ftpRequest.UseBinary = true;
ftpRequest.Credentials = new NetworkCredential("wangqihe", "123456");
ftpRequest.Method = type;
webresp = ftpRequest.GetResponse();
ftpFileListReader = new StreamReader(webresp.GetResponseStream(), Encoding.Default);
}
catch (Exception ex)
{
ex.ToString();
}
StringBuilder str = new StringBuilder();
string line = ftpFileListReader.ReadLine();
while (line != null)
{
str.Append(line);
str.Append("鼯");
line = ftpFileListReader.ReadLine();
}
string[] fen = str.ToString().Split('鼯');
return fen;
}

#region ---------下载文件下的所有文件 void downftp(string ftpads, string name, string Myads)
/// <summary>
/// 下载方法KO
/// </summary>
/// <param name="ftpads">FTP路径</param>
/// <param name="name">需要下载文件路径</param>
/// <param name="Myads">保存的本地路径</param>
public void downftp(string ftpads, string name, string Myads)
{
string downloadDir = Myads + name;
string ftpdir = ftpads + name;
string[] fullname = ftp(ftpads, name, WebRequestMethods.Ftp.ListDirectoryDetails);
//判断是否为单个文件
if (fullname.Length <= 2)
{
if (fullname[fullname.Length - 1] == "")
{
download(downloadDir + "/" + name, ftpads + name + "/" + name);
}
}
else
{
string[] onlyname = ftp(ftpads, name, WebRequestMethods.Ftp.ListDirectory);
if (!Directory.Exists(downloadDir))
{
Directory.CreateDirectory(downloadDir);
}
foreach (string names in fullname)
{
//判断是否具有文件夹标识<DIR>
if (names.StartsWith("d") && (!names.EndsWith(".")))
{
string olname = names.Substring(names.IndexOf(':') + 3).TrimStart();
//string olname = names.Split(new string[] { "<DIR>" },
//StringSplitOptions.None)[1].Trim();
downftp(ftpdir, "//" + olname, downloadDir);
}
else
{
foreach (string onlynames in onlyname)
{
if (onlynames == "" || onlynames == " " || names == "")
{
break;
}
else
{
if (names.Contains(" " + onlynames))
{
download(downloadDir + "/" + onlynames, ftpads + name + "/" +
onlynames);
break;
}
}
}
}
}
}

}
#endregion

#region ftp服务器上载文件的功能 string Upload(string data, string filename, string file)
//ftp服务器上载文件的功能
public string Upload(string data, string filename, string file)
{
FileInfo fileInf = new FileInfo(filename);
string uri = file + "\\" + data;
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential("wangqihe", "123456");//获取设置与ftp服务器通信凭证
// 默认为true，连接不会被关闭  yyyyMMddHHmmss
// 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;
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);
int totalDownloadedByte = 0;
// 流内容没有结束
while (contentLen != 0)
{
totalDownloadedByte = contentLen + totalDownloadedByte; //更新文件
// 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;
}
}
#endregion

public static void DeleteFileName(string fileName)
{
try
{
string uri = fileName;
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
// 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)
{

}
}

public static string MakeDir(string dirName)
{
try
{
string uri = dirName;
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
return "";
}
catch (WebException ex)
{
return "[Make Dir]" + ex.Message;
}
}
//获得文件大小
public long GetFileSize(string filename)
{
long fileSize = 0;
try
{
FileInfo fileInf = new FileInfo(filename);
string uri =  fileInf.Name;
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
fileSize = response.ContentLength;
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return fileSize;
}
}

public frmList()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void btnGetList_Click(object sender, EventArgs e)
{

Bind();
}
#region ----------获取ftp文件列表 void Bind()
private void Bind()
{
TreeNode root = null;
treeView1.Nodes.Clear();
try
{
FtpDownLoad ftp = new FtpDownLoad("wangqihe", "123456");
string[] ss = ftp.GetDirectoryList("ftp://192.168.1.20/notice");

for (int i = 0; i < ss.Length - 1; i++)
{
root = treeView1.Nodes.Add(ss[i].ToString());
FillTree_Detail(root, ss[i].ToString());
}
root.Expand();

this.treeView1.SelectedNode = root;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "提示！ʾ", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

private void FillTree_Detail(TreeNode root,string dd)
{
TreeNode item = null;
FtpDownLoad ftp = new FtpDownLoad("wangqihe", "123456");
string[] s2 = ftp.GetDetailList("ftp://192.168.1.20/notice/" + dd.Trim());

for (int i = 3; i < s2.Length - 1; i++)
{
item = root.Nodes.Add(s2[i].ToString().Substring(54));
if (ftp.IsFolder(s2[i].ToString()))
{
FillTree_Detail(item, dd +"/"+ s2[i].ToString().Substring(54).Trim());
}
}
}
#endregion

private void treeView1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)//判断你点的是不是右键
{
Point ClickPoint = new Point(e.X, e.Y);
TreeNode CurrentNode = treeView1.GetNodeAt(ClickPoint);
if (CurrentNode != null)//判断你点的是不是一个节点
{
CurrentNode.ContextMenuStrip = contextMenuStrip1;
treeView1.SelectedNode = CurrentNode;//选中这个节点
}
}
}

private void 下载浏览ToolStripMenuItem_Click(object sender, EventArgs e)
{
FtpDownLoad ftp = new FtpDownLoad("wangqihe", "123456");
ftp.downftp("ftp://192.168.1.20/notice/", treeView1.SelectedNode.Text, "f://");
if (ftp.IsFolder(treeView1.SelectedNode.Text))
{
webBrowser1.Url = new Uri("f:/" + treeView1.SelectedNode.Text + "/default.html");
}
else
{
webBrowser1.Url = new Uri("f:/" + treeView1.SelectedNode.Text);
}
}

private void 文件上传ToolStripMenuItem_Click(object sender, EventArgs e)
{
FtpDownLoad ftp = new FtpDownLoad("wangqihe", "123456");
ftp.Upload(DateTime.Now.ToString("yyyyMMddhhmmss"), "f://222.html", "ftp://192.168.1.20/notice/" + treeView1.SelectedNode.Text);
}