net,C#,Ftp各种操作,上传,下载,删除文件,创建目录,删除目录,获得文件列表

using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.IO;

using System.Windows.Forms;

 

namespace ConvertData

{

    class FtpUpDown

    {

        string ftpServerIP;

        string ftpUserID;

        string ftpPassword;

        FtpWebRequest reqFTP;

        private void Connect(String path)//连接ftp

        {

            // 根据uri创建FtpWebRequest对象

            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));

            // 指定数据传输类型

            reqFTP.UseBinary = true;

            // ftp用户名和密码

            reqFTP.Credentials = new NetworkCredential(ftpUserID,
ftpPassword);

        }

        public FtpUpDown(string ftpServerIP, string ftpUserID, string
ftpPassword)

        {

            this.ftpServerIP = ftpServerIP;

            this.ftpUserID = ftpUserID;

            this.ftpPassword = ftpPassword;

 

        }

        //都调用这个

        private string[] GetFileList(string path, string
WRMethods)//上面的代码示例了如何从ftp服务器上获得文件列表

        {

            string[] downloadFiles;

            StringBuilder result = new StringBuilder();

 

            try

            {

                Connect(path);

                reqFTP.Method = WRMethods;

                WebResponse response = reqFTP.GetResponse();

                StreamReader reader = new
StreamReader(response.GetResponseStream(),
System.Text.Encoding.Default);//中文文件名

                string line = reader.ReadLine();

                while (line != null)

                {

                    result.Append(line);

                    result.Append(" ");

                    line = reader.ReadLine();

                }

                // to remove the trailing '' ''

                result.Remove(result.ToString().LastIndexOf('' ''), 1);

                reader.Close();

                response.Close();

                return result.ToString().Split('' '');

            }

            catch (Exception ex)

            {

                System.Windows.Forms.MessageBox.Show(ex.Message);

                downloadFiles = null;

                return downloadFiles;

            }

        }

        public string[] GetFileList(string
path)//上面的代码示例了如何从ftp服务器上获得文件列表

        {

            return GetFileList("ftp://" + ftpServerIP + "/" + path,
WebRequestMethods.Ftp.ListDirectory);

 

        }

 

        public string[] GetFileList()//上面的代码示例了如何从ftp服务器上获得文件列表

{

            return GetFileList("ftp://" + ftpServerIP + "/",
WebRequestMethods.Ftp.ListDirectory);

 

        }

        public void Upload(string filename) //上面的代码实现了从ftp服务器上载文件的功能

        {

            FileInfo fileInf = new FileInfo(filename);

            string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

 

            Connect(uri);//连接         

 

            // 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.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);

 

                // 流内容没有结束

                while (contentLen != 0)

                {

                    // 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();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message, "Upload Error");

            }

        }

 

        public bool Download(string filePath, string fileName, out string
errorinfo)/**/////上面的代码实现了从ftp服务器下载文件的功能

        {

 

 

            try

            {

                String onlyFileName = Path.GetFileName(fileName);

                string newFileName = filePath + "/" + onlyFileName;

                if (File.Exists(newFileName))

                {

                    errorinfo = string.Format("本地文件{0}已存在,无法下载",
newFileName);

                    return false;

}

                string url = "ftp://" + ftpServerIP + "/" + fileName;

                Connect(url);//连接 

 

                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);

                FileStream outputStream = new FileStream(newFileName,
FileMode.Create);

 

                while (readCount > 0)

                {

                    outputStream.Write(buffer, 0, readCount);

 

                    readCount = ftpStream.Read(buffer, 0, bufferSize);

                }

 

                ftpStream.Close();

 

                outputStream.Close();

 

                response.Close();

                errorinfo = "";

                return true;

            }

            catch (Exception ex)

            {

                errorinfo = string.Format("因{0},无法下载", ex.Message);

                return false;

            }

        }

        //删除文件

        public void DeleteFileName(string fileName)

        {

            try

            {

                FileInfo fileInf = new FileInfo(fileName);

                string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

 

                Connect(uri);//连接         

 

                // 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)

            {

                MessageBox.Show(ex.Message, "删除错误");

            }

}

        //创建目录

        public void MakeDir(string dirName)

        {

 

            try

            {

 

                string uri = "ftp://" + ftpServerIP + "/" + dirName;

                Connect(uri);//连接      

                reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;

                FtpWebResponse response =
(FtpWebResponse)reqFTP.GetResponse();

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

        //删除目录

        public void delDir(string dirName)

        {

 

            try

            {

 

                string uri = "ftp://" + ftpServerIP + "/" + dirName;

                Connect(uri);//连接      

                reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;

                FtpWebResponse response =
(FtpWebResponse)reqFTP.GetResponse();

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

        //获得文件大小

        public long GetFileSize(string filename)

        {

 

            long fileSize = 0;

            try

            {

                FileInfo fileInf = new FileInfo(filename);

                string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

                Connect(uri);//连接      

                reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;

                FtpWebResponse response =
(FtpWebResponse)reqFTP.GetResponse();

                fileSize = response.ContentLength;

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

            return fileSize;

        }

        //文件改名

        public void Rename(string currentFilename, string newFilename)

        {

 

            try

            {

                FileInfo fileInf = new FileInfo(currentFilename);

                string uri = "ftp://" +

ftpServerIP + "/" + fileInf.Name;

                Connect(uri);//连接

                reqFTP.Method = WebRequestMethods.Ftp.Rename;

                reqFTP.RenameTo = newFilename;

 

                FtpWebResponse response =
(FtpWebResponse)reqFTP.GetResponse();

                //Stream ftpStream = response.GetResponseStream();

                //ftpStream.Close();

                response.Close();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

        //获得文件明晰

        public string[] GetFilesDetailList()

        {

            return GetFileList("ftp://" + ftpServerIP + "/",
WebRequestMethods.Ftp.ListDirectoryDetails);

        }

        //获得文件明晰

        public string[] GetFilesDetailList(string path)

        {

            return GetFileList("ftp://" + ftpServerIP + "/" + path,
WebRequestMethods.Ftp.ListDirectoryDetails);

        }

 

    }

 

}

 

-----------------------

测试

       //获得文件列表

       private void button1_Click(object sender, EventArgs e)

        {

            FtpUpDown ftpUpDown = new
FtpUpDown(ConvertData.Properties.Settings.Default.ftpServerIP,
ConvertData.Properties.Settings.Default.ftpUserID,
ConvertData.Properties.Settings.Default.ftpPassword);

            string[] str = ftpUpDown.GetFileList("2005");

            richTextBox1.Lines = str;

        }

        //下载

        private void button2_Click(object sender, EventArgs e)

        {

            FtpUpDown ftpUpDown = new
FtpUpDown(ConvertData.Properties.Settings.Default.ftpServerIP,
ConvertData.Properties.Settings.Default.ftpUserID,
ConvertData.Properties.Settings.Default.ftpPassword);

            ftpUpDown.Download("c:/", "2007/11/01/57070.pdf");

 

        }

        //上传

        private void button3_Click(object sender, EventArgs e)

        {

            FtpUpDown ftpUpDown = new
FtpUpDown(ConvertData.Properties.Settings.Default.ftpServerIP,
ConvertData.Properties.Settings.Default.ftpUserID,
ConvertData.Properties.Settings.Default.ftpPassword);

            ftpUpDown.Upload("c:/57070.pdf");

        }