c#上传下载ftp(支持断点续传)
using System.Net;
using System.IO;
using System.Text;
using System.Net.Sockets;
namespace ftpGet
{
/// <summary>
/// FTP Client
/// </summary>
public class FTPClient
{
构造函数
登陆字段、属性
链接
传输模式
文件操作
#region 上传和下载
/// <summary>
/// 下载一批文件
/// </summary>
/// <param name="strFileNameMask">文件名的匹配字符串</param>
/// <param name="strFolder">本地目录(不得以\结束)</param>
public void Get(string strFileNameMask, string strFolder)
{
if (!bConnected)
{
Connect();
}
string[] strFiles = Dir(strFileNameMask);
foreach (string strFile in strFiles)
{
if (!strFile.Equals(""))//一般来说strFiles的最后一个元素可能是空字符串
{
if (strFile.LastIndexOf(".") > -1)
{
Get(strFile.Replace("\r", ""), strFolder, strFile.Replace("\r", ""));
}
}
}
}
/// <summary>
/// 下载目录
/// </summary>
/// <param name="strRemoteFileName">要下载的文件名</param>
/// <param name="strFolder">本地目录(不得以\结束)</param>
/// <param name="strLocalFileName">保存在本地时的文件名</param>
public void Get(string strRemoteFileName, string strFolder, string strLocalFileName)
{
if (strLocalFileName.StartsWith("-r"))
{
string[] infos = strLocalFileName.Split(' ');
strRemoteFileName=strLocalFileName = infos[infos.Length - 1];
if (!bConnected)
{
Connect();
}
SetTransferType(TransferType.Binary);
if (strLocalFileName.Equals(""))
{
strLocalFileName = strRemoteFileName;
}
if (!File.Exists(strLocalFileName))
{
Stream st = File.Create(strLocalFileName);
st.Close();
}
FileStream output = new
FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
Socket socketData = CreateDataSocket();
SendCommand("RETR " + strRemoteFileName);
if (!(iReplyCode == 150 || iReplyCode == 125
|| iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
output.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
}
/// <summary>
/// 下载一个文件
/// </summary>
/// <param name="strRemoteFileName">要下载的文件名</param>
/// <param name="strFolder">本地目录(不得以\结束)</param>
/// <param name="strLocalFileName">保存在本地时的文件名</param>
public void GetFile(string strRemoteFileName, string strFolder, string strLocalFileName)
{
if (!bConnected)
{
Connect();
}
SetTransferType(TransferType.Binary);
if (strLocalFileName.Equals(""))
{
strLocalFileName = strRemoteFileName;
}
if (!File.Exists(strLocalFileName))
{
Stream st = File.Create(strLocalFileName);
st.Close();
}
FileStream output = new
FileStream(strFolder + "\\" + strLocalFileName, FileMode.Create);
Socket socketData = CreateDataSocket();
SendCommand("RETR " + strRemoteFileName);
if (!(iReplyCode == 150 || iReplyCode == 125
|| iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
output.Write(buffer, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
output.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
/// <summary>
/// 下载一个文件
/// </summary>
/// <param name="strRemoteFileName">要下载的文件名</param>
/// <param name="strFolder">本地目录(不得以\结束)</param>
/// <param name="strLocalFileName">保存在本地时的文件名</param>
public void GetBrokenFile(string strRemoteFileName, string strFolder, string strLocalFileName,long size)
{
if (!bConnected)
{
Connect();
}
SetTransferType(TransferType.Binary);
FileStream output = new
FileStream(strFolder + "\\" + strLocalFileName, FileMode.Append);
Socket socketData = CreateDataSocket();
SendCommand("REST " + size.ToString());
SendCommand("RETR " + strRemoteFileName);
if (!(iReplyCode == 150 || iReplyCode == 125
|| iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
//int byteYu = (int)size % 512;
//int byteChu = (int)size / 512;
//byte[] tempBuffer = new byte[byteYu];
//for (int i = 0; i < byteChu; i++)
//{
// socketData.Receive(buffer, buffer.Length, 0);
//}
//socketData.Receive(tempBuffer, tempBuffer.Length, 0);
//socketData.Receive(buffer, byteYu, 0);
while (true)
{
int iBytes = socketData.Receive(buffer, buffer.Length, 0);
//totalBytes += iBytes;
output.Write(buffer, 0, iBytes);
if (iBytes <= 0)
{
break;
}
}
output.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
/// <summary>
/// 上传一批文件
/// </summary>
/// <param name="strFolder">本地目录(不得以\结束)</param>
/// <param name="strFileNameMask">文件名匹配字符(可以包含*和?)</param>
public void Put(string strFolder, string strFileNameMask)
{
string[] strFiles = Directory.GetFiles(strFolder, strFileNameMask);
foreach (string strFile in strFiles)
{
//strFile是完整的文件名(包含路径)
Put(strFile);
}
}
/// <summary>
/// 上传一个文件
/// </summary>
/// <param name="strFileName">本地文件名</param>
public void Put(string strFileName)
{
if (!bConnected)
{
Connect();
}
Socket socketData = CreateDataSocket();
SendCommand("STOR " + Path.GetFileName(strFileName));
if (!(iReplyCode == 125 || iReplyCode == 150))
{
throw new IOException(strReply.Substring(4));
}
FileStream input = new
FileStream(strFileName, FileMode.Open);
int iBytes = 0;
while ((iBytes = input.Read(buffer, 0, buffer.Length)) > 0)
{
socketData.Send(buffer, iBytes, 0);
}
input.Close();
if (socketData.Connected)
{
socketData.Close();
}
if (!(iReplyCode == 226 || iReplyCode == 250))
{
ReadReply();
if (!(iReplyCode == 226 || iReplyCode == 250))
{
throw new IOException(strReply.Substring(4));
}
}
}
#endregion
#region 目录操作
/// <summary>
/// 创建目录
/// </summary>
/// <param name="strDirName">目录名</param>
public void MkDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("MKD " + strDirName);
if (iReplyCode != 257)
{
throw new IOException(strReply.Substring(4));
}
}
/// <summary>
/// 删除目录
/// </summary>
/// <param name="strDirName">目录名</param>
public void RmDir(string strDirName)
{
if (!bConnected)
{
Connect();
}
SendCommand("RMD " + strDirName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
}
/// <summary>
/// 改变目录
/// </summary>
/// <param name="strDirName">新的工作目录名</param>
public void ChDir(string strDirName)
{
if (strDirName.Equals(".") || strDirName.Equals(""))
{
return;
}
if (!bConnected)
{
Connect();
}
SendCommand("CWD " + strDirName);
if (iReplyCode != 250)
{
throw new IOException(strReply.Substring(4));
}
this.strRemotePath = strDirName;
}
#endregion
#region 内部变量
/// <summary>
/// 服务器返回的应答信息(包含应答码)
/// </summary>
private string strMsg;
/// <summary>
/// 服务器返回的应答信息(包含应答码)
/// </summary>
private string strReply;
/// <summary>
/// 服务器返回的应答码
/// </summary>
private int iReplyCode;
/// <summary>
/// 进行控制连接的socket
/// </summary>
private Socket socketControl;
/// <summary>
/// 传输模式
/// </summary>
private TransferType trType;
/// <summary>
/// 接收和发送数据的缓冲区
/// </summary>
private static int BLOCK_SIZE = 512;
Byte[] buffer = new Byte[BLOCK_SIZE];
/// <summary>
/// 编码方式(为防止出现中文乱码采用 GB2312编码方式)
/// </summary>
Encoding GB2312 = Encoding.GetEncoding("gb2312");
#endregion
#region 内部函数
/// <summary>
/// 将一行应答字符串记录在strReply和strMsg
/// 应答码记录在iReplyCode
/// </summary>
private void ReadReply()
{
strMsg = "";
strReply = ReadLine();
iReplyCode = Int32.Parse(strReply.Substring(0, 3));
}
/// <summary>
/// 建立进行数据连接的socket
/// </summary>
/// <returns>数据连接socket</returns>
private Socket CreateDataSocket()
{
SendCommand("PASV");
if (iReplyCode != 227)
{
throw new IOException(strReply.Substring(4));
}
int index1 = strReply.IndexOf('(');
int index2 = strReply.IndexOf(')');
string ipData =
strReply.Substring(index1 + 1, index2 - index1 - 1);
int[] parts = new int[6];
int len = ipData.Length;
int partCount = 0;
string buf = "";
for (int i = 0; i < len && partCount <= 6; i++)
{
char ch = Char.Parse(ipData.Substring(i, 1));
if (Char.IsDigit(ch))
buf += ch;
else if (ch != ',')
{
throw new IOException("Malformed PASV strReply: " +
strReply);
}
if (ch == ',' || i + 1 == len)
{
try
{
parts[partCount++] = Int32.Parse(buf);
buf = "";
}
catch (Exception)
{
throw new IOException("Malformed PASV strReply: " +
strReply);
}
}
}
string ipAddress = parts[0] + "." + parts[1] + "." +
parts[2] + "." + parts[3];
int port = (parts[4] << 8) + parts[5];
Socket s = new
Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ep = new
IPEndPoint(IPAddress.Parse(ipAddress), port);
try
{
s.Connect(ep);
}
catch (Exception)
{
throw new IOException("Can't connect to remote server");
}
return s;
}
/// <summary>
/// 关闭socket连接(用于登录以前)
/// </summary>
private void CloseSocketConnect()
{
if (socketControl != null)
{
socketControl.Close();
socketControl = null;
}
bConnected = false;
}
/// <summary>
/// 读取Socket返回的所有字符串
/// </summary>
/// <returns>包含应答码的字符串行</returns>
private string ReadLine()
{
while (true)
{
int iBytes = socketControl.Receive(buffer, buffer.Length, 0);
strMsg += GB2312.GetString(buffer, 0, iBytes);
if (iBytes < buffer.Length)
{
break;
}
}
char[] seperator = { '\n' };
string[] mess = strMsg.Split(seperator);
if (strMsg.Length > 2)
{
strMsg = mess[mess.Length - 2];
//seperator[0]是10,换行符是由13和0组成的,分隔后10后面虽没有字符串,
//但也会分配为空字符串给后面(也是最后一个)字符串数组,
//所以最后一个mess是没用的空字符串
//但为什么不直接取mess[0],因为只有最后一行字符串应答码与信息之间有空格
}
else
{
strMsg = mess[0];
}
if (!strMsg.Substring(3, 1).Equals(" "))//返回字符串正确的是以应答码(如220开头,后面接一空格,再接问候字符串)
{
return ReadLine();
}
return strMsg;
}
/// <summary>
/// 发送命令并获取应答码和最后一行应答字符串
/// </summary>
/// <param name="strCommand">命令</param>
private void SendCommand(String strCommand)
{
Byte[] cmdBytes =
GB2312.GetBytes((strCommand + "\r\n").ToCharArray());
socketControl.Send(cmdBytes, cmdBytes.Length, 0);
ReadReply();
}
#endregion
}
}
当然,大家还要看看Main方法
using System.Collections.Generic;
using System.Text;
using System.IO;
namespace ftpGet
{
class Program
{
static string remotingFolder = System.Configuration.ConfigurationSettings.AppSettings["remotingFolder"]; //远程ftp文件目录
static string localFolder = System.Configuration.ConfigurationSettings.AppSettings["localFolder"]; //要下载到的本地目录
static string ftpServer = System.Configuration.ConfigurationSettings.AppSettings["ftpServer"]; //ftp服务器
static string user = System.Configuration.ConfigurationSettings.AppSettings["user"]; //用户名
static string pwd = System.Configuration.ConfigurationSettings.AppSettings["pwd"]; //密码
static string port = System.Configuration.ConfigurationSettings.AppSettings["port"]; //端口
static void Main(string[] args)
{
FTPClient client = new FTPClient(ftpServer, "/", user, pwd, int.Parse(port));
client.Connect();
GetFolder("*", remotingFolder, client, CreateFolder());
client.DisConnect();
ClearFolder();
Console.WriteLine("下载完毕");
System.Threading.Thread.Sleep(3000);
}
/// <summary>
/// 在本地目录下创建一个以日期为名称的目录,我做这个ftp的主要目的是为了每天都备份
/// </summary>
/// <returns>创建的目录名</returns>
private static string CreateFolder()
{
string folder=localFolder + "\\"+DateTime.Now.ToShortDateString();
if (!Directory.Exists(folder))
Directory.CreateDirectory(folder);
return folder;
}
/// <summary>
/// 在下载结束后清空程序目录的多余文件
/// </summary>
private static void ClearFolder()
{
string folder = Environment.CurrentDirectory;
string[] dictorys = Directory.GetFiles(folder);
foreach (string dictory in dictorys)
{
FileInfo info = new FileInfo(dictory);
if (info.Length == 0)
File.Delete(dictory);
}
}
/// <summary>
/// 递归获取ftp文件夹的内容
/// </summary>
/// <param name="fileMark">文件标记</param>
/// <param name="path">远程路径</param>
/// <param name="client"></param>
/// <param name="folder"></param>
private static void GetFolder(string fileMark, string path, FTPClient client, string folder)
{
string[] dirs = client.Dir(path); //获取目录下的内容
client.ChDir(path); //改变目录
foreach (string dir in dirs)
{
string[] infos = dir.Split(' ');
string info = infos[infos.Length - 1].Replace("\r", "");
if (dir.StartsWith("d") && !string.IsNullOrEmpty(dir)) //为目录
{
if (!info.EndsWith(".") && !info.EndsWith("..")) //筛选出真实的目录
{
Directory.CreateDirectory(folder + "\\" + info);
GetFolder(fileMark, path + "/" + info, client, folder + "\\" + info);
client.ChDir(path);
}
}
else if (dir.StartsWith("-r")) //为文件
{
string file = folder + "\\" + info;
if (File.Exists(file))
{
long remotingSize = client.GetFileSize(info);
FileInfo fileInfo = new FileInfo(file);
long localSize = fileInfo.Length;
if (remotingSize != localSize) //短点续传
{
client.GetBrokenFile(info, folder, info, localSize);
}
}
else
{
client.GetFile(info, folder, info); //下载文件
Console.WriteLine("文件" + folder + info + "已经下载");
}
}
}
}
}
}
配置文件
<configuration>
<appSettings>
<add key="remotingFolder" value="/temp"/>
<add key="localFolder" value="c:\temp"/>
<add key="ftpServer" value="*"/>
<add key="user" value="*"/>
<add key="pwd" value="*"/>
<add key="port" value="21"/>
</appSettings>
</configuration>
c#上传下载ftp(支持断点续传)的更多相关文章
- C# FTP上传下载(支持断点续传)
<pre class="csharp" name="code"><pre class="csharp" name=&quo ...
- 使用curl / wget命令上传下载FTP
curl可以在shell下轻松上传下载ftp上的文件,相比ftp命令更具有优势,因为它能在单命令条件下,下载或者上传一个ftp文件,甚至可以删除文件. 下面看实例: 1.列出ftp服务器上的目录列表: ...
- python使用ftplib模块实现FTP文件的上传下载
python已经默认安装了ftplib模块,用其中的FTP类可以实现FTP文件的上传下载 FTP文件上传下载 # coding:utf8 from ftplib import FTP def uplo ...
- 【FTP】FTP文件上传下载-支持断点续传
Jar包:apache的commons-net包: 支持断点续传 支持进度监控(有时出不来,搞不清原因) 相关知识点 编码格式: UTF-8等; 文件类型: 包括[BINARY_FILE_TYPE(常 ...
- python实现支持目录FTP上传下载文件的方法
#!/usr/bin/env python # -*- coding: utf-8 -*- import ftplib import os import sys class FTPSync(objec ...
- java实现多线程断点续传,上传下载
采用apache 的 commons-net-ftp-ftpclient import java.io.File; import java.io.FileOutputStream; import ja ...
- 4.1 - FTP文件上传下载
题目:开发一个支持多用户同时在线的FTP程序要求:1.用户加密认证2.允许同时多用户登录3.每个用户有自己的家目录,且只能访问自己的家目录4.对用户进行磁盘配额,每个用户的可用空间不同5.允许用户在f ...
- ftp上传下载功能实现
该程序分为客户端和服务端,目前已经实现以下功能: 1. 多用户同时登陆 2. 用户登陆,加密认证 3. 上传/下载文件,保证文件一致性 4. 传输过程中现实进度条 5. 不同用户家目录不同,且只能访问 ...
- FTP客户端上传下载Demo实现
1.第一次感觉MS也有这么难用的MFC类: 2.CFtpFileFind类只能实例化一个,多个实例同时查找会出错(因此下载时不能递归),采用队列存储目录再依次下载: 3.本程序支持文件夹嵌套上传下载: ...
随机推荐
- 文件上传到ftp服务工具类
直接引用此java工具类就好 import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundExcep ...
- vue axios----基于 Promise 的 HTTP 请求
vue axiosvue2.0之axios接口請求管理功能特性axios API開始使用get請求post请求多个请求并发拦截器移除一个拦截器:自定义的 axios 实例添加拦截器:vue2.0之ax ...
- 19. 接口(创建interface 继承implements)
1.语法: interface 接口名{ 属性 抽象方法 } 2.实例: 3.注意: 1)类实现接口可以通过implements实现,实现接口的时候必须把接口中的所有方法实现,一个类可以实现多个接口. ...
- 每天进步一点点-Tesseract 文字识别
Tesseract 文字识别 是github上的开源文字识别软件 下载与安装 https://github.com/tesseract-ocr/tesseract/wiki 下载 https://gi ...
- python编程语言学习day05(1)
模块(不起与python相关模块的名字) 1.random random.random() 在0与1之间取随机数 random.randint(a,b) 在a,b之间取随机整数,包括边界 ra ...
- vue组件间函数调用
vue父子组件间函数调用 <Child ref="myChild"></Child> // 父组件 // 引入子组件 import Child from ' ...
- Bootstrap快速入门并且建立常用模板
对于移动端,能够快速搭建网站,操作相对简单 ,更容易掌握,这篇文章就介绍一下BootStrap 一 什么是Bottstrap 一个前端开发的框架,Bootstrap,来自 Twitter,是目前很受 ...
- 阿里巴巴IPv6应用平台引领下一代互联网
摘要: 据预测,到2020年底我国IPv6终端设备将达到5亿,正在快速取代IPv4.阿里巴巴网络架构师张先国先生在2018 年GNTC 大会IPv6 专场上分享IPv6应用集团业务(支付宝.淘宝.天猫 ...
- BZOJ 4455: [Zjoi2016]小星星(容斥+树形dp)
传送门 解题思路 首先题目中有两个限制,第一个是两个集合直接必须一一映射,第二个是重新标号后,\(B\)中两点有边\(A\)中也必须有.发现限制\(2\)比较容易满足,考虑化简限制\(1\).令\(f ...
- NX二次开发-NXOPEN工程图导出CAD图纸DxfdwgCreator *dxfdwgCreator1;
没有什么可以看的,NXOPEN直接录制一下导出CAD就可以了.录制出来自己挑需要的代码拿过来改一下. NX9+VS2012 #include <NXOpen/Part.hxx> #incl ...