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php爱好者> php文档>net,c#,ftp各种操作,上传,下载,删除文件,创建目录,删除目录,获得文件列表等...

net,c#,ftp各种操作,上传,下载,删除文件,创建目录,删除目录,获得文件列表等...

时间：2010-08-11 来源：zhengfeng9930

2009-07-21 17:45

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("\n");

line = reader.ReadLine();

}

// to remove the trailing '\n'

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

reader.Close();

response.Close();

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

}

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");

}