只下载FTP文件更新的部分
1 /// <summary> 2 /// 下载 3 /// </summary> 4 /// <param name="filePath">下载后文件存放位置</param> 5 /// <param name="fileName">文件名称</param> 6 public bool Download(string filePath, string fileName) 7 { 8 bool judge = false; 9 FtpWebRequest reqFTP = null; 10 Stream ftpStream = null; 11 FtpWebResponse response = null; 12 FileStream outputStream = null; 13 14 try 15 { 16 var path = filePath + "\" + fileName; 17 //获取本地文件 18 //Append决定outputStream.Write写入时，是从头开始覆盖，还是从末尾追加。 19 outputStream = new FileStream(path, FileMode.Append); 20 //本地文件字节数 21 long outputStreamLength = outputStream.Length; 22 //创建FTP请求 23 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName)); 24 //reqFTP.UsePassive = false;//会导致 操作超时 25 //reqFTP.KeepAlive = false; 26 reqFTP.UseBinary = true; 27 //配置FTP下载的开始位置：outputStreamLength 28 reqFTP.ContentOffset = outputStreamLength; 29 reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; 30 reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); 31 //FTP服务器响应(或返回)结果 32 response = (FtpWebResponse)reqFTP.GetResponse(); 33 //获取FTP发送的响应数据流 34 ftpStream = response.GetResponseStream(); 35 int bufferSize = 2048; 36 int readCount; 37 byte[] buffer = new byte[bufferSize]; 38 /* 39 Stream 表示“流”（这个bai概念在计算机中非常常见，题主可以自行搜索相关资料），本质上是一种字节序列。说穿了，计算机只认识0和1，那么这么丰富多彩的文本、音乐、视频，归根结底都是转换成字节存储在内存与硬盘中的。 40 Stream 对象有一个属性 Length，表示这个流的长度；还有一个属性 Position，表示这个流当前的位置。 41 Stream.Read(byte[] array, int offset, int count); 42 array 表示缓冲区；offset 表示从流的当前位置（也就上面说的 Position）偏移多少个字节开始读；count 表示读取多少个字节。 43 该方法返回的是实际上读取了多少个字节（永远小于等于 count），如果该值等于 0，说明已经到流的末尾了。读取之后，这个流的 Position 就会发生变化。 44 为什么要缓冲区？因为一个流很可能非常大，一次性的加载是不现实的，所以需要分块来读取，存储每个分块的这个字节数组就叫做“缓冲区”。 45 */ 46 readCount = ftpStream.Read(buffer, 0, bufferSize); 47 48 while (readCount > 0) 49 { 50 //将读取的字节数组buffer写入outputStream文件流 51 outputStream.Write(buffer, 0, readCount); 52 //再次读取，再次位置提升。不断重复直到readCount为0; 53 readCount = ftpStream.Read(buffer, 0, bufferSize); 54 } 55 judge = true; 56 ftpStream.Close(); 57 outputStream.Close(); 58 response.Close(); 59 60 } 61 catch (Exception ex) 62 { 63 64 LogManage.Info(fileName); 65 LogManage.Error(ex); 66 67 try 68 { 69 if (ftpStream != null) 70 { 71 ftpStream.Close(); 72 } 73 if (outputStream != null) 74 { 75 outputStream.Close(); 76 } 77 if (response != null) 78 { 79 response.Close(); 80 } 81 } 82 catch (Exception ex2) 83 { 84 85 } 86 } 87 88 89 return judge; 90 }
转载来源一： https://www.cnblogs.com/swtseaman/archive/2011/03/29/1998611.html
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
//using System.Windows.Forms;
using System.Globalization;
namespace FTPLib
{
public class FtpWeb
{
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 FtpWeb(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)
{
ftpServerIP = FtpServerIP;
ftpRemotePath = FtpRemotePath;
ftpUserID = FtpUserID;
ftpPassword = FtpPassword;
if (ftpRemotePath != "")
{
ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
}
else
{
ftpURI = "ftp://" + ftpServerIP + "/";
}
}
/// <summary>
/// 下载
/// </summary>
/// <param name="filePath">下载后文件存放位置</param>
/// <param name="fileName">文件名称</param>
public bool Download(string filePath, string fileName)
{
FtpWebRequest reqFTP;
bool judge = false;
//try
//{
FileStream outputStream = new FileStream(filePath+"\" + fileName, FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.KeepAlive = false;
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);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
judge = true;
//}
//catch (Exception ex)
//{
// Insert_Standard_ErrorLog.Insert("FtpWeb", "Download Error --> " + ex.Message);
//}
return judge;
}
#region 没用上的方法，使用时注释try catch，把异常抛给上一级处理
/// <summary>
/// 上传
/// </summary>
/// <param name="filename"></param>
public void Upload(string filename)
{
FileInfo fileInf = new FileInfo(filename);
string uri = ftpURI + fileInf.Name;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
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)
//{
// Insert_Standard_ErrorLog.Insert("FtpWeb", "Upload Error --> " + ex.Message);
//}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="fileName"></param>
public void Delete(string fileName)
{
//try
//{
string uri = ftpURI + fileName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
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)
//{
// Insert_Standard_ErrorLog.Insert("FtpWeb", "Delete Error --> " + ex.Message + " 文件名:" + fileName);
//}
}
/// <summary>
/// 删除文件夹
/// </summary>
/// <param name="folderName"></param>
public void RemoveDirectory(string folderName)
{
//try
//{
string uri = ftpURI + folderName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;
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)
//{
// Insert_Standard_ErrorLog.Insert("FtpWeb", "Delete Error --> " + ex.Message + " 文件名:" + folderName);
//}
}
/// <summary>
/// 获取当前目录下明细(包含文件和文件夹)
/// </summary>
/// <returns></returns>
public string[] GetFilesDetailList()
{
string[] downloadFiles;
//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(), Encoding.Default);
//while (reader.Read() > 0)
//{
//}
string line = reader.ReadLine();
//line = reader.ReadLine();
//line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("
");
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf("
"), 1);
reader.Close();
response.Close();
return result.ToString().Split('
');
//}
//catch (Exception ex)
//{
// downloadFiles = null;
// Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFilesDetailList Error --> " + ex.Message);
// return downloadFiles;
//}
}
/// <summary>
/// 获取当前目录下文件列表(仅文件)
/// </summary>
/// <returns></returns>
public string[] GetFileList(string mask)
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
//try
//{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
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("
");
}
}
else
{
result.Append(line);
result.Append("
");
}
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf('
'), 1);
reader.Close();
response.Close();
return result.ToString().Split('
');
//}
//catch (Exception ex)
//{
// downloadFiles = null;
// if (ex.Message.Trim() != "远程服务器返回错误: (550) 文件不可用(例如，未找到文件，无法访问文件)。")
// {
// Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFileList Error --> " + ex.Message.ToString());
// }
// return downloadFiles;
//}
}
/// <summary>
/// 获取当前目录下所有的文件夹列表(仅文件夹)
/// </summary>
/// <returns></returns>
public string[] GetDirectoryList()
{
string[] drectory = GetFilesDetailList();
string m = string.Empty;
foreach (string str in drectory)
{
int dirPos = str.IndexOf("<DIR>");
if (dirPos > 0)
{
/*判断 Windows 风格*/
m += str.Substring(dirPos + 5).Trim() + "
";
}
else if (str.Trim().Substring(0, 1).ToUpper() == "D")
{
/*判断 Unix 风格*/
string dir = str.Substring(54).Trim();
if (dir != "." && dir != "..")
{
m += dir + "
";
}
}
}
char[] n = new char[] { '
' };
return m.Split(n);
}
/// <summary>
/// 判断当前目录下指定的子目录是否存在
/// </summary>
/// <param name="RemoteDirectoryName">指定的目录名</param>
public bool DirectoryExist(string RemoteDirectoryName)
{
string[] dirList = GetDirectoryList();
foreach (string str in dirList)
{
if (str.Trim() == RemoteDirectoryName.Trim())
{
return true;
}
}
return false;
}
/// <summary>
/// 判断当前目录下指定的文件是否存在
/// </summary>
/// <param name="RemoteFileName">远程文件名</param>
public bool FileExist(string RemoteFileName)
{
string[] fileList = GetFileList("*.*");
foreach (string str in fileList)
{
if (str.Trim() == RemoteFileName.Trim())
{
return true;
}
}
return false;
}
/// <summary>
/// 创建文件夹
/// </summary>
/// <param name="dirName"></param>
public void MakeDir(string dirName)
{
FtpWebRequest reqFTP;
//try
//{
// dirName = name of the directory to create.
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)
//{
// Insert_Standard_ErrorLog.Insert("FtpWeb", "MakeDir Error --> " + ex.Message);
//}
}
/// <summary>
/// 获取指定文件大小
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
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)
//{
// Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFileSize Error --> " + ex.Message);
//}
return fileSize;
}
/// <summary>
/// 改名
/// </summary>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
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)
//{
// Insert_Standard_ErrorLog.Insert("FtpWeb", "ReName Error --> " + ex.Message);
//}
}
/// <summary>
/// 移动文件
/// </summary>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
public void MovieFile(string currentFilename, string newDirectory)
{
ReName(currentFilename, newDirectory);
}
/// <summary>
/// 切换当前目录
/// </summary>
/// <param name="DirectoryName"></param>
/// <param name="IsRoot">true 绝对路径 false 相对路径</param>
public void GotoDirectory(string DirectoryName, bool IsRoot)
{
if (IsRoot)
{
ftpRemotePath = DirectoryName;
}
else
{
ftpRemotePath += DirectoryName + "/";
}
ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
}
/// <summary>
/// 删除订单目录
/// </summary>
/// <param name="ftpServerIP">FTP 主机地址</param>
/// <param name="folderToDelete">FTP 用户名</param>
/// <param name="ftpUserID">FTP 用户名</param>
/// <param name="ftpPassword">FTP 密码</param>
public static void DeleteOrderDirectory(string ftpServerIP, string folderToDelete, string ftpUserID, string ftpPassword)
{
//try
//{
if (!string.IsNullOrEmpty(ftpServerIP) && !string.IsNullOrEmpty(folderToDelete) && !string.IsNullOrEmpty(ftpUserID) && !string.IsNullOrEmpty(ftpPassword))
{
FtpWeb fw = new FtpWeb(ftpServerIP, folderToDelete, ftpUserID, ftpPassword);
//进入订单目录
fw.GotoDirectory(folderToDelete, true);
//获取规格目录
string[] folders = fw.GetDirectoryList();
foreach (string folder in folders)
{
if (!string.IsNullOrEmpty(folder) || folder != "")
{
//进入订单目录
string subFolder = folderToDelete + "/" + folder;
fw.GotoDirectory(subFolder, true);
//获取文件列表
string[] files = fw.GetFileList("*.*");
if (files != null)
{
//删除文件
foreach (string file in files)
{
fw.Delete(file);
}
}
//删除冲印规格文件夹
fw.GotoDirectory(folderToDelete, true);
fw.RemoveDirectory(folder);
}
}
//删除订单文件夹
string parentFolder = folderToDelete.Remove(folderToDelete.LastIndexOf('/'));
string orderFolder = folderToDelete.Substring(folderToDelete.LastIndexOf('/') + 1);
fw.GotoDirectory(parentFolder, true);
fw.RemoveDirectory(orderFolder);
}
else
{
throw new Exception("FTP 及路径不能为空！");
}
//}
//catch (Exception ex)
//{
// throw new Exception("删除订单时发生错误，错误信息为：" + ex.Message);
//}
}
#endregion
}
public class Insert_Standard_ErrorLog
{
public static void Insert(string x, string y)
{
}
}
}
来源二：C# FTP 上传下载（支持断点续传）
https://www.cnblogs.com/lvdongjie/p/5570355.html
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; namespace JianKunKing.Common.Ftp { /// <summary> /// ftp方式文件下载上传 /// </summary> public static class FileUpDownload { #region 变量属性 /// <summary> /// Ftp服务器ip /// </summary> public static string FtpServerIP = string.Empty; /// <summary> /// Ftp 指定用户名 /// </summary> public static string FtpUserID = string.Empty; /// <summary> /// Ftp 指定用户密码 /// </summary> public static string FtpPassword = string.Empty; #endregion #region 从FTP服务器下载文件，指定本地路径和本地文件名 /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名 /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP, ftpsize; Stream ftpStream = null; FtpWebResponse response = null; FileStream outputStream = null; try { outputStream = new FileStream(localFileName, FileMode.Create); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp下载目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName); ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri); ftpsize.UseBinary = true; reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.UseBinary = true; reqFTP.KeepAlive = false; if (ifCredential)//使用用户身份认证 { ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword); reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); } ftpsize.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse(); long totalBytes = re.ContentLength; re.Close(); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; response = (FtpWebResponse)reqFTP.GetResponse(); ftpStream = response.GetResponseStream(); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, 0);//更新进度条 } long totalDownloadedByte = 0; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { totalDownloadedByte = readCount + totalDownloadedByte; outputStream.Write(buffer, 0, readCount); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条 } readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (ftpStream != null) { ftpStream.Close(); } if (outputStream != null) { outputStream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名（支持断点下载） /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="size">已下载文件流大小</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpBrokenDownload(string remoteFileName, string localFileName, bool ifCredential, long size, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP, ftpsize; Stream ftpStream = null; FtpWebResponse response = null; FileStream outputStream = null; try { outputStream = new FileStream(localFileName, FileMode.Append); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp下载目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName); ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri); ftpsize.UseBinary = true; ftpsize.ContentOffset = size; reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.UseBinary = true; reqFTP.KeepAlive = false; reqFTP.ContentOffset = size; if (ifCredential)//使用用户身份认证 { ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword); reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); } ftpsize.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse(); long totalBytes = re.ContentLength; re.Close(); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; response = (FtpWebResponse)reqFTP.GetResponse(); ftpStream = response.GetResponseStream(); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, 0);//更新进度条 } long totalDownloadedByte = 0; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { totalDownloadedByte = readCount + totalDownloadedByte; outputStream.Write(buffer, 0, readCount); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条 } readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (ftpStream != null) { ftpStream.Close(); } if (outputStream != null) { outputStream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名 /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <param name="brokenOpen">是否断点下载：true 会在localFileName 找是否存在已经下载的文件，并计算文件流大小</param> /// <returns>是否下载成功</returns> public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, bool brokenOpen, Action<int, int> updateProgress = null) { if (brokenOpen) { try { long size = 0; if (File.Exists(localFileName)) { using (FileStream outputStream = new FileStream(localFileName, FileMode.Open)) { size = outputStream.Length; } } return FtpBrokenDownload(remoteFileName, localFileName, ifCredential, size, updateProgress); } catch { throw; } } else { return FtpDownload(remoteFileName, localFileName, ifCredential, updateProgress); } } #endregion #region 上传文件到FTP服务器 /// <summary> /// 上传文件到FTP服务器 /// </summary> /// <param name="localFullPath">本地带有完整路径的文件名</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpUploadFile(string localFullPathName, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP; Stream stream = null; FtpWebResponse response = null; FileStream fs = null; try { FileInfo finfo = new FileInfo(localFullPathName); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp上传目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + finfo.Name); reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.KeepAlive = false; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码 reqFTP.Method = WebRequestMethods.Ftp.UploadFile;//向服务器发出下载请求命令 reqFTP.ContentLength = finfo.Length;//为request指定上传文件的大小 response = reqFTP.GetResponse() as FtpWebResponse; reqFTP.ContentLength = finfo.Length; int buffLength = 1024; byte[] buff = new byte[buffLength]; int contentLen; fs = finfo.OpenRead(); stream = reqFTP.GetRequestStream(); contentLen = fs.Read(buff, 0, buffLength); int allbye = (int)finfo.Length; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, 0);//更新进度条 } int startbye = 0; while (contentLen != 0) { startbye = contentLen + startbye; stream.Write(buff, 0, contentLen); //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startbye);//更新进度条 } contentLen = fs.Read(buff, 0, buffLength); } stream.Close(); fs.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (fs != null) { fs.Close(); } if (stream != null) { stream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 上传文件到FTP服务器(断点续传) /// </summary> /// <param name="localFullPath">本地文件全路径名称：C:UsersJianKunKingDesktopIronPython脚本测试工具</param> /// <param name="remoteFilepath">远程文件所在文件夹路径</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns></returns> public static bool FtpUploadBroken(string localFullPath, string remoteFilepath, Action<int, int> updateProgress = null) { if (remoteFilepath == null) { remoteFilepath = ""; } string newFileName = string.Empty; bool success = true; FileInfo fileInf = new FileInfo(localFullPath); long allbye = (long)fileInf.Length; if (fileInf.Name.IndexOf("#") == -1) { newFileName = RemoveSpaces(fileInf.Name); } else { newFileName = fileInf.Name.Replace("#", "＃"); newFileName = RemoveSpaces(newFileName); } long startfilesize = GetFileSize(newFileName, remoteFilepath); if (startfilesize >= allbye) { return false; } long startbye = startfilesize; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startfilesize);//更新进度条 } string uri; if (remoteFilepath.Length == 0) { uri = "ftp://" + FtpServerIP + "/" + newFileName; } else { uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + newFileName; } FtpWebRequest reqFTP; // 根据uri创建FtpWebRequest对象 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); // 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.AppendFile; // 指定数据传输类型 reqFTP.UseBinary = true; // 上传文件时通知服务器文件的大小 reqFTP.ContentLength = fileInf.Length; int buffLength = 2048;// 缓冲大小设置为2kb byte[] buff = new byte[buffLength]; // 打开一个文件流 (System.IO.FileStream) 去读上传的文件 FileStream fs = fileInf.OpenRead(); Stream strm = null; try { // 把上传的文件写入流 strm = reqFTP.GetRequestStream(); // 每次读文件流的2kb fs.Seek(startfilesize, 0); int 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); startbye += contentLen; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startbye);//更新进度条 } } // 关闭两个流 strm.Close(); fs.Close(); } catch { success = false; throw; } finally { if (fs != null) { fs.Close(); } if (strm != null) { strm.Close(); } } return success; } /// <summary> /// 去除空格 /// </summary> /// <param name="str"></param> /// <returns></returns> private static string RemoveSpaces(string str) { string a = ""; CharEnumerator CEnumerator = str.GetEnumerator(); while (CEnumerator.MoveNext()) { byte[] array = new byte[1]; array = System.Text.Encoding.ASCII.GetBytes(CEnumerator.Current.ToString()); int asciicode = (short)(array[0]); if (asciicode != 32) { a += CEnumerator.Current.ToString(); } } string sdate = System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Hour.ToString() + System.DateTime.Now.Minute.ToString() + System.DateTime.Now.Second.ToString() + System.DateTime.Now.Millisecond.ToString(); return a.Split('.')[a.Split('.').Length - 2] + "." + a.Split('.')[a.Split('.').Length - 1]; } /// <summary> /// 获取已上传文件大小 /// </summary> /// <param name="filename">文件名称</param> /// <param name="path">服务器文件路径</param> /// <returns></returns> public static long GetFileSize(string filename, string remoteFilepath) { long filesize = 0; try { FtpWebRequest reqFTP; FileInfo fi = new FileInfo(filename); string uri; if (remoteFilepath.Length == 0) { uri = "ftp://" + FtpServerIP + "/" + fi.Name; } else { uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + fi.Name; } reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.KeepAlive = false; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码 reqFTP.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); filesize = response.ContentLength; return filesize; } catch { return 0; } } //public void Connect(String path, string ftpUserID, string ftpPassword)//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); //} #endregion } }</pre><br></pre> [csharp] view plain copy print? <pre class="csharp" name="code">using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; namespace JianKunKing.Common.Ftp { /// <summary> /// ftp方式文件下载上传 /// </summary> public static class FileUpDownload { #region 变量属性 /// <summary> /// Ftp服务器ip /// </summary> public static string FtpServerIP = string.Empty; /// <summary> /// Ftp 指定用户名 /// </summary> public static string FtpUserID = string.Empty; /// <summary> /// Ftp 指定用户密码 /// </summary> public static string FtpPassword = string.Empty; #endregion #region 从FTP服务器下载文件，指定本地路径和本地文件名 /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名 /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP, ftpsize; Stream ftpStream = null; FtpWebResponse response = null; FileStream outputStream = null; try { outputStream = new FileStream(localFileName, FileMode.Create); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp下载目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName); ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri); ftpsize.UseBinary = true; reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.UseBinary = true; reqFTP.KeepAlive = false; if (ifCredential)//使用用户身份认证 { ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword); reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); } ftpsize.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse(); long totalBytes = re.ContentLength; re.Close(); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; response = (FtpWebResponse)reqFTP.GetResponse(); ftpStream = response.GetResponseStream(); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, 0);//更新进度条 } long totalDownloadedByte = 0; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { totalDownloadedByte = readCount + totalDownloadedByte; outputStream.Write(buffer, 0, readCount); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条 } readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (ftpStream != null) { ftpStream.Close(); } if (outputStream != null) { outputStream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名（支持断点下载） /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="size">已下载文件流大小</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpBrokenDownload(string remoteFileName, string localFileName, bool ifCredential, long size, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP, ftpsize; Stream ftpStream = null; FtpWebResponse response = null; FileStream outputStream = null; try { outputStream = new FileStream(localFileName, FileMode.Append); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp下载目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName); ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri); ftpsize.UseBinary = true; ftpsize.ContentOffset = size; reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.UseBinary = true; reqFTP.KeepAlive = false; reqFTP.ContentOffset = size; if (ifCredential)//使用用户身份认证 { ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword); reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); } ftpsize.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse(); long totalBytes = re.ContentLength; re.Close(); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; response = (FtpWebResponse)reqFTP.GetResponse(); ftpStream = response.GetResponseStream(); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, 0);//更新进度条 } long totalDownloadedByte = 0; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { totalDownloadedByte = readCount + totalDownloadedByte; outputStream.Write(buffer, 0, readCount); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条 } readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (ftpStream != null) { ftpStream.Close(); } if (outputStream != null) { outputStream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名 /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <param name="brokenOpen">是否断点下载：true 会在localFileName 找是否存在已经下载的文件，并计算文件流大小</param> /// <returns>是否下载成功</returns> public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, bool brokenOpen, Action<int, int> updateProgress = null) { if (brokenOpen) { try { long size = 0; if (File.Exists(localFileName)) { using (FileStream outputStream = new FileStream(localFileName, FileMode.Open)) { size = outputStream.Length; } } return FtpBrokenDownload(remoteFileName, localFileName, ifCredential, size, updateProgress); } catch { throw; } } else { return FtpDownload(remoteFileName, localFileName, ifCredential, updateProgress); } } #endregion #region 上传文件到FTP服务器 /// <summary> /// 上传文件到FTP服务器 /// </summary> /// <param name="localFullPath">本地带有完整路径的文件名</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpUploadFile(string localFullPathName, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP; Stream stream = null; FtpWebResponse response = null; FileStream fs = null; try { FileInfo finfo = new FileInfo(localFullPathName); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp上传目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + finfo.Name); reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.KeepAlive = false; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码 reqFTP.Method = WebRequestMethods.Ftp.UploadFile;//向服务器发出下载请求命令 reqFTP.ContentLength = finfo.Length;//为request指定上传文件的大小 response = reqFTP.GetResponse() as FtpWebResponse; reqFTP.ContentLength = finfo.Length; int buffLength = 1024; byte[] buff = new byte[buffLength]; int contentLen; fs = finfo.OpenRead(); stream = reqFTP.GetRequestStream(); contentLen = fs.Read(buff, 0, buffLength); int allbye = (int)finfo.Length; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, 0);//更新进度条 } int startbye = 0; while (contentLen != 0) { startbye = contentLen + startbye; stream.Write(buff, 0, contentLen); //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startbye);//更新进度条 } contentLen = fs.Read(buff, 0, buffLength); } stream.Close(); fs.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (fs != null) { fs.Close(); } if (stream != null) { stream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 上传文件到FTP服务器(断点续传) /// </summary> /// <param name="localFullPath">本地文件全路径名称：C:UsersJianKunKingDesktopIronPython脚本测试工具</param> /// <param name="remoteFilepath">远程文件所在文件夹路径</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns></returns> public static bool FtpUploadBroken(string localFullPath, string remoteFilepath, Action<int, int> updateProgress = null) { if (remoteFilepath == null) { remoteFilepath = ""; } string newFileName = string.Empty; bool success = true; FileInfo fileInf = new FileInfo(localFullPath); long allbye = (long)fileInf.Length; if (fileInf.Name.IndexOf("#") == -1) { newFileName = RemoveSpaces(fileInf.Name); } else { newFileName = fileInf.Name.Replace("#", "＃"); newFileName = RemoveSpaces(newFileName); } long startfilesize = GetFileSize(newFileName, remoteFilepath); if (startfilesize >= allbye) { return false; } long startbye = startfilesize; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startfilesize);//更新进度条 } string uri; if (remoteFilepath.Length == 0) { uri = "ftp://" + FtpServerIP + "/" + newFileName; } else { uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + newFileName; } FtpWebRequest reqFTP; // 根据uri创建FtpWebRequest对象 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); // 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.AppendFile; // 指定数据传输类型 reqFTP.UseBinary = true; // 上传文件时通知服务器文件的大小 reqFTP.ContentLength = fileInf.Length; int buffLength = 2048;// 缓冲大小设置为2kb byte[] buff = new byte[buffLength]; // 打开一个文件流 (System.IO.FileStream) 去读上传的文件 FileStream fs = fileInf.OpenRead(); Stream strm = null; try { // 把上传的文件写入流 strm = reqFTP.GetRequestStream(); // 每次读文件流的2kb fs.Seek(startfilesize, 0); int 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); startbye += contentLen; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startbye);//更新进度条 } } // 关闭两个流 strm.Close(); fs.Close(); } catch { success = false; throw; } finally { if (fs != null) { fs.Close(); } if (strm != null) { strm.Close(); } } return success; } /// <summary> /// 去除空格 /// </summary> /// <param name="str"></param> /// <returns></returns> private static string RemoveSpaces(string str) { string a = ""; CharEnumerator CEnumerator = str.GetEnumerator(); while (CEnumerator.MoveNext()) { byte[] array = new byte[1]; array = System.Text.Encoding.ASCII.GetBytes(CEnumerator.Current.ToString()); int asciicode = (short)(array[0]); if (asciicode != 32) { a += CEnumerator.Current.ToString(); } } string sdate = System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Hour.ToString() + System.DateTime.Now.Minute.ToString() + System.DateTime.Now.Second.ToString() + System.DateTime.Now.Millisecond.ToString(); return a.Split('.')[a.Split('.').Length - 2] + "." + a.Split('.')[a.Split('.').Length - 1]; } /// <summary> /// 获取已上传文件大小 /// </summary> /// <param name="filename">文件名称</param> /// <param name="path">服务器文件路径</param> /// <returns></returns> public static long GetFileSize(string filename, string remoteFilepath) { long filesize = 0; try { FtpWebRequest reqFTP; FileInfo fi = new FileInfo(filename); string uri; if (remoteFilepath.Length == 0) { uri = "ftp://" + FtpServerIP + "/" + fi.Name; } else { uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + fi.Name; } reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.KeepAlive = false; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码 reqFTP.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); filesize = response.ContentLength; return filesize; } catch { return 0; } } //public void Connect(String path, string ftpUserID, string ftpPassword)//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); //} #endregion } }</pre><br> [csharp] view plain copy print? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; namespace JianKunKing.Common.Ftp { /// <summary> /// ftp方式文件下载上传 /// </summary> public static class FileUpDownload { #region 变量属性 /// <summary> /// Ftp服务器ip /// </summary> public static string FtpServerIP = string.Empty; /// <summary> /// Ftp 指定用户名 /// </summary> public static string FtpUserID = string.Empty; /// <summary> /// Ftp 指定用户密码 /// </summary> public static string FtpPassword = string.Empty; #endregion #region 从FTP服务器下载文件，指定本地路径和本地文件名 /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名 /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP, ftpsize; Stream ftpStream = null; FtpWebResponse response = null; FileStream outputStream = null; try { outputStream = new FileStream(localFileName, FileMode.Create); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp下载目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName); ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri); ftpsize.UseBinary = true; reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.UseBinary = true; reqFTP.KeepAlive = false; if (ifCredential)//使用用户身份认证 { ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword); reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); } ftpsize.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse(); long totalBytes = re.ContentLength; re.Close(); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; response = (FtpWebResponse)reqFTP.GetResponse(); ftpStream = response.GetResponseStream(); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, 0);//更新进度条 } long totalDownloadedByte = 0; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { totalDownloadedByte = readCount + totalDownloadedByte; outputStream.Write(buffer, 0, readCount); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条 } readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (ftpStream != null) { ftpStream.Close(); } if (outputStream != null) { outputStream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名（支持断点下载） /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="size">已下载文件流大小</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpBrokenDownload(string remoteFileName, string localFileName, bool ifCredential, long size, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP, ftpsize; Stream ftpStream = null; FtpWebResponse response = null; FileStream outputStream = null; try { outputStream = new FileStream(localFileName, FileMode.Append); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp下载目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName); ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri); ftpsize.UseBinary = true; ftpsize.ContentOffset = size; reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.UseBinary = true; reqFTP.KeepAlive = false; reqFTP.ContentOffset = size; if (ifCredential)//使用用户身份认证 { ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword); reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); } ftpsize.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse(); long totalBytes = re.ContentLength; re.Close(); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; response = (FtpWebResponse)reqFTP.GetResponse(); ftpStream = response.GetResponseStream(); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, 0);//更新进度条 } long totalDownloadedByte = 0; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { totalDownloadedByte = readCount + totalDownloadedByte; outputStream.Write(buffer, 0, readCount); //更新进度 if (updateProgress != null) { updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条 } readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (ftpStream != null) { ftpStream.Close(); } if (outputStream != null) { outputStream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 从FTP服务器下载文件，指定本地路径和本地文件名 /// </summary> /// <param name="remoteFileName">远程文件名</param> /// <param name="localFileName">保存本地的文件名（包含路径）</param> /// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <param name="brokenOpen">是否断点下载：true 会在localFileName 找是否存在已经下载的文件，并计算文件流大小</param> /// <returns>是否下载成功</returns> public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, bool brokenOpen, Action<int, int> updateProgress = null) { if (brokenOpen) { try { long size = 0; if (File.Exists(localFileName)) { using (FileStream outputStream = new FileStream(localFileName, FileMode.Open)) { size = outputStream.Length; } } return FtpBrokenDownload(remoteFileName, localFileName, ifCredential, size, updateProgress); } catch { throw; } } else { return FtpDownload(remoteFileName, localFileName, ifCredential, updateProgress); } } #endregion #region 上传文件到FTP服务器 /// <summary> /// 上传文件到FTP服务器 /// </summary> /// <param name="localFullPath">本地带有完整路径的文件名</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns>是否下载成功</returns> public static bool FtpUploadFile(string localFullPathName, Action<int, int> updateProgress = null) { FtpWebRequest reqFTP; Stream stream = null; FtpWebResponse response = null; FileStream fs = null; try { FileInfo finfo = new FileInfo(localFullPathName); if (FtpServerIP == null || FtpServerIP.Trim().Length == 0) { throw new Exception("ftp上传目标服务器地址未设置！"); } Uri uri = new Uri("ftp://" + FtpServerIP + "/" + finfo.Name); reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.KeepAlive = false; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码 reqFTP.Method = WebRequestMethods.Ftp.UploadFile;//向服务器发出下载请求命令 reqFTP.ContentLength = finfo.Length;//为request指定上传文件的大小 response = reqFTP.GetResponse() as FtpWebResponse; reqFTP.ContentLength = finfo.Length; int buffLength = 1024; byte[] buff = new byte[buffLength]; int contentLen; fs = finfo.OpenRead(); stream = reqFTP.GetRequestStream(); contentLen = fs.Read(buff, 0, buffLength); int allbye = (int)finfo.Length; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, 0);//更新进度条 } int startbye = 0; while (contentLen != 0) { startbye = contentLen + startbye; stream.Write(buff, 0, contentLen); //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startbye);//更新进度条 } contentLen = fs.Read(buff, 0, buffLength); } stream.Close(); fs.Close(); response.Close(); return true; } catch (Exception) { return false; throw; } finally { if (fs != null) { fs.Close(); } if (stream != null) { stream.Close(); } if (response != null) { response.Close(); } } } /// <summary> /// 上传文件到FTP服务器(断点续传) /// </summary> /// <param name="localFullPath">本地文件全路径名称：C:UsersJianKunKingDesktopIronPython脚本测试工具</param> /// <param name="remoteFilepath">远程文件所在文件夹路径</param> /// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param> /// <returns></returns> public static bool FtpUploadBroken(string localFullPath, string remoteFilepath, Action<int, int> updateProgress = null) { if (remoteFilepath == null) { remoteFilepath = ""; } string newFileName = string.Empty; bool success = true; FileInfo fileInf = new FileInfo(localFullPath); long allbye = (long)fileInf.Length; if (fileInf.Name.IndexOf("#") == -1) { newFileName = RemoveSpaces(fileInf.Name); } else { newFileName = fileInf.Name.Replace("#", "＃"); newFileName = RemoveSpaces(newFileName); } long startfilesize = GetFileSize(newFileName, remoteFilepath); if (startfilesize >= allbye) { return false; } long startbye = startfilesize; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startfilesize);//更新进度条 } string uri; if (remoteFilepath.Length == 0) { uri = "ftp://" + FtpServerIP + "/" + newFileName; } else { uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + newFileName; } FtpWebRequest reqFTP; // 根据uri创建FtpWebRequest对象 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword); // 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.AppendFile; // 指定数据传输类型 reqFTP.UseBinary = true; // 上传文件时通知服务器文件的大小 reqFTP.ContentLength = fileInf.Length; int buffLength = 2048;// 缓冲大小设置为2kb byte[] buff = new byte[buffLength]; // 打开一个文件流 (System.IO.FileStream) 去读上传的文件 FileStream fs = fileInf.OpenRead(); Stream strm = null; try { // 把上传的文件写入流 strm = reqFTP.GetRequestStream(); // 每次读文件流的2kb fs.Seek(startfilesize, 0); int 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); startbye += contentLen; //更新进度 if (updateProgress != null) { updateProgress((int)allbye, (int)startbye);//更新进度条 } } // 关闭两个流 strm.Close(); fs.Close(); } catch { success = false; throw; } finally { if (fs != null) { fs.Close(); } if (strm != null) { strm.Close(); } } return success; } /// <summary> /// 去除空格 /// </summary> /// <param name="str"></param> /// <returns></returns> private static string RemoveSpaces(string str) { string a = ""; CharEnumerator CEnumerator = str.GetEnumerator(); while (CEnumerator.MoveNext()) { byte[] array = new byte[1]; array = System.Text.Encoding.ASCII.GetBytes(CEnumerator.Current.ToString()); int asciicode = (short)(array[0]); if (asciicode != 32) { a += CEnumerator.Current.ToString(); } } string sdate = System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Hour.ToString() + System.DateTime.Now.Minute.ToString() + System.DateTime.Now.Second.ToString() + System.DateTime.Now.Millisecond.ToString(); return a.Split('.')[a.Split('.').Length - 2] + "." + a.Split('.')[a.Split('.').Length - 1]; } /// <summary> /// 获取已上传文件大小 /// </summary> /// <param name="filename">文件名称</param> /// <param name="path">服务器文件路径</param> /// <returns></returns> public static long GetFileSize(string filename, string remoteFilepath) { long filesize = 0; try { FtpWebRequest reqFTP; FileInfo fi = new FileInfo(filename); string uri; if (remoteFilepath.Length == 0) { uri = "ftp://" + FtpServerIP + "/" + fi.Name; } else { uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + fi.Name; } reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri); reqFTP.KeepAlive = false; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码 reqFTP.Method = WebRequestMethods.Ftp.GetFileSize; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); filesize = response.ContentLength; return filesize; } catch { return 0; } } //public void Connect(String path, string ftpUserID, string ftpPassword)//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); //} #endregion } }
IIS下搭建FTP服务器
https://blog.csdn.net/jiankunking/article/details/50016043