ftp 不识别中文/传送中文文件失败的原因和解决方案
此方法无效，正在解决
借用了别人的c#代码做ftp，发现该ftp传输文件时不能下载带有中文名的文件。服务器是linux服务器不识别中文，客户端是win8。
这种问题是由客户端中文编码与服务器编码不一致造成的，要么让服务器识别中文编码，要么让客户端“聪明”些改变下载策略。
本人尝试前者数次，奈何水平不够，至今未能修改linux系统语言，只好尝试后者。
修改前该ftp调用方法如下：
FtpWeb ftp = new FtpWeb("115.77.365.99","/var/ftp/test1","test1","553569");
ftp.Download("d:", @"1.txt");即可将文件"1.txt" 从服务器的/var/ftp/test1目录下下载至本地的"d:"目录下
然而在服务器上将“1.txt”改为"去.txt"之后就不能下载了，在服务器上文件名显示为“??.txt”
本人最终使用了两条语句来解决这个问题:
public static string z百分号变汉字(string aa) //GBK编码转换成汉字，如把"%c8%a5.txt"变成"去.txt" (c8 a5,不一定对应的就是“去”这个字，记不清//了)
{
return aa= System.Web.HttpUtility.UrlDecode(aa, System.Text.Encoding.GetEncoding("GB2312"));
}
public static string z汉字变百分号(string aa) //汉字变成“%c8%a5.txt”这种类型
{
return aa = System.Web.HttpUtility.UrlEncode(aa, Encoding.GetEncoding("GBK"));
}
具体的原理也不甚清楚，求解释，全部代码及调用方式如下（借用的别人的程序，版权不是俺的，俺也不清楚哪里是最早的出处）：
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Windows.Forms;
using System.Globalization;
using System.Web;
/*
调用方法
FtpWeb ftp = new FtpWeb("333.22.111.22","/var/ftp/test1","test1","553569");
ftp.Download("d:", @"去.txt");
*/
namespace FtpLib
{
public class FtpWeb
{
string ftpServerIP;
string ftpRemotePath;
string ftpUserID;
string ftpPassword;
string ftpURI;
public static string z百分号变汉字(string aa)
{
return aa= System.Web.HttpUtility.UrlDecode(aa, System.Text.Encoding.GetEncoding("GB2312"));
}
public static string z汉字变百分号(string aa)
{
return aa = System.Web.HttpUtility.UrlEncode(aa, Encoding.GetEncoding("GBK"));
}
///
/// 连接FTP
///
/// 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 FtpWeb(string FtpServerIP, string FtpRemotePath, string FtpUserID, string FtpPassword)
{
//修改
FtpRemotePath = z汉字变百分号(FtpRemotePath);
//修改结束
ftpServerIP = FtpServerIP;
ftpRemotePath = FtpRemotePath;
ftpUserID = FtpUserID;
ftpPassword = FtpPassword;
ftpURI =@"ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
}
///
/// 上传
///
///
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);
}
}
///
/// 下载
///
///
///
public void Download(string filePath, string fileName)
{
string newname = filePath + "\\" + fileName;
fileName = z汉字变百分号(fileName);
// filePath = z汉字变百分号(filePath);
FtpWebRequest reqFTP;
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.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();
//改名
string oldname = filePath + "\\" + fileName;
try
{
System.IO.File.Move(oldname, newname);
}
catch
{
System.IO.File.Delete(oldname);
}
}
catch (Exception ex)
{
Insert_Standard_ErrorLog.Insert("FtpWeb", "Download Error --> " + ex.Message);
}
}
///
/// 删除文件
///
///
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);
}
}
///
/// 删除文件夹
///
///
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);
}
}
///
/// 获取当前目录下明细(包含文件和文件夹)
///
///
/// 获取当前目录下文件列表(仅文件)
///
///
/// 获取当前目录下所有的文件夹列表(仅文件夹)
///
/// ");
if (dirPos > 0)
{
/*判断 Windows 风格*/
m += str.Substring(dirPos + 5).Trim() + "\n";
}
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 + "\n";
}
}
}
char[] n = new char[] { '\n' };
return m.Split(n);
}
///
/// 判断当前目录下指定的子目录是否存在
///
/// 指定的目录名
public bool DirectoryExist(string RemoteDirectoryName)
{
string[] dirList = GetDirectoryList();
foreach (string str in dirList)
{
if (str.Trim() == RemoteDirectoryName.Trim())
{
return true;
}
}
return false;
}
///
/// 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
{
// 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);
}
}
///
/// 获取指定文件大小
///
///
///
/// 改名
///
///
///
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)
{
Insert_Standard_ErrorLog.Insert("FtpWeb", "ReName Error --> " + ex.Message);
}
}
///
/// 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 + "/";
}
///
/// 删除订单目录
///
/// FTP 主机地址
/// FTP 用户名
/// FTP 用户名
/// FTP 密码
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);
}
}
}
public class Insert_Standard_ErrorLog
{
public static void Insert(string x, string y)
{
}
}
}