using System;
using System.Collections.Generic;using System.Configuration;using System.IO;using System.Linq;using System.Net;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication1{ /// <summary> /// FTP帮助类 /// </summary> public class FtpHelper { //基本设置 static private string path = ConfigurationManager.AppSettings["FtpUrl"]; //目标路径 static private string ftpip = ConfigurationManager.AppSettings["FtpIp"]; //ftp IP地址 static private string username = ConfigurationManager.AppSettings["FtpUserName"]; //ftp用户名 static private string password = ConfigurationManager.AppSettings["FtpPwd"]; //ftp密码 //获取ftp上面的文件和文件夹 public static string[] GetFileList(string dir = "/") { StringBuilder result = new StringBuilder(); FtpWebRequest request; request = (FtpWebRequest)FtpWebRequest.Create(new Uri(path)); request.UseBinary = true; request.Credentials = new NetworkCredential(username, password);//设置用户名和密码 request.Method = WebRequestMethods.Ftp.ListDirectory; request.UseBinary = true; //绕过代理 request.Proxy = GlobalProxySelection.GetEmptyWebProxy(); WebResponse response = request.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream()); string line = reader.ReadLine(); if (line == null) { reader.Close(); response.Close(); return null; } while (line != null) { result.Append(line); result.Append("\n"); line = reader.ReadLine(); } result.Remove(result.ToString().LastIndexOf('\n'), 1); reader.Close(); response.Close(); return result.ToString().Split('\n'); } /// <summary> /// 获取文件大小 /// </summary> /// <param name="file">ip服务器下的相对路径</param> /// <returns>文件大小</returns> public static int GetFileSize(string file) { StringBuilder result = new StringBuilder(); FtpWebRequest request; request = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + file)); request.UseBinary = true; request.Credentials = new NetworkCredential(username, password);//设置用户名和密码 request.Method = WebRequestMethods.Ftp.GetFileSize; //绕过代理 request.Proxy = GlobalProxySelection.GetEmptyWebProxy(); int dataLength = (int)request.GetResponse().ContentLength; return dataLength; } /// <summary> /// 文件上传 /// </summary> /// <param name="filePath">原路径（绝对路径）包括文件名</param> /// <param name="objPath">目标文件夹：服务器下的相对路径 不填为根目录</param> public static void FileUpLoad(string filePath, string objPath = "") { string url = path; if (objPath != "") url += objPath + "/"; FtpWebRequest reqFTP = null; //待上传的文件 （全路径） FileInfo fileInfo = new FileInfo(filePath); using (FileStream fs = fileInfo.OpenRead()) { long length = fs.Length; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url + fileInfo.Name)); //设置连接到FTP的帐号密码 reqFTP.Credentials = new NetworkCredential(username, password); //设置请求完成后是否保持连接 reqFTP.KeepAlive = false; //指定执行命令 reqFTP.Method = WebRequestMethods.Ftp.UploadFile; //指定数据传输类型 reqFTP.UseBinary = true; //绕过代理 reqFTP.Proxy = GlobalProxySelection.GetEmptyWebProxy(); using (Stream stream = reqFTP.GetRequestStream()) { //设置缓冲大小 int BufferLength = 5120; byte[] b = new byte[BufferLength]; int i; while ((i = fs.Read(b, 0, BufferLength)) > 0) { stream.Write(b, 0, i); } } } } /// <summary> /// 删除文件 /// </summary> /// <param name="fileName">服务器下的相对路径 包括文件名</param> public static void DeleteFileName(string fileName) { FileInfo fileInf = new FileInfo(ftpip + "" + fileName); string uri = path + fileName; FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // 指定数据传输类型 reqFTP.UseBinary = true; // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(username, password); // 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(); } /// <summary> /// 新建目录 上一级必须先存在 /// </summary> /// <param name="dirName">服务器下的相对路径</param> public static void MakeDir(string dirName) { string uri = path + dirName; FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // 指定数据传输类型 reqFTP.UseBinary = true; // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); response.Close(); } /// <summary> /// 删除目录 上一级必须先存在 /// </summary> /// <param name="dirName">服务器下的相对路径</param> public static void DelDir(string dirName) { string uri = path + dirName; FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); response.Close(); } /// <summary> /// 从ftp服务器上获得文件夹列表 /// </summary> /// <param name="RequedstPath">服务器下的相对路径</param> /// <returns></returns> public static List<string> GetDirctory(string RequedstPath) { List<string> strs = new List<string>(); string uri = path + RequedstPath; //目标路径 path为服务器地址 FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails; WebResponse response = reqFTP.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名 string line = reader.ReadLine(); while (line != null) { if (line.Contains("<DIR>")) { string msg = line.Substring(line.LastIndexOf("<DIR>") + 5).Trim(); strs.Add(msg); } line = reader.ReadLine(); } reader.Close(); response.Close(); return strs; } /// <summary> /// 从ftp服务器上获得文件列表 /// </summary> /// <param name="RequedstPath">服务器下的相对路径</param> /// <returns></returns> public static List<string> GetFile(string RequedstPath) { List<string> strs = new List<string>(); string uri = path + RequedstPath; //目标路径 path为服务器地址 FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails; WebResponse response = reqFTP.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名 string line = reader.ReadLine(); while (line != null) { if (!line.Contains("<DIR>")) { string msg = line.Substring(39).Trim(); strs.Add(msg); } line = reader.ReadLine(); } reader.Close(); response.Close(); return strs; } /// <summary> /// 从ftp服务器上下载文件的功能 /// </summary> /// <param name="fileName">文件名</param> /// <param name="localPath">本地路径</param> public static void Download(string fileName, string localPath) { FtpWebRequest reqFTP; string filePath = AppDomain.CurrentDomain.BaseDirectory; FileStream outputStream = new FileStream(localPath + "\\" + fileName, FileMode.Create); reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + fileName)); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.UsePassive = false; 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(); } }}