這篇文章將為大家詳細(xì)講解有關(guān)C#中FtpHelper對服務(wù)器文件怎么實現(xiàn)讀寫操作,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.IO; using System.Threading; using System.Configuration; namespace FtpSyn { public class FtpHelper { //基本設(shè)置 ftp://400:ZOina2017@192.168.10.17/400backup static private string path = @"ftp://" + ConfigurationManager.AppSettings["FtpServerIP"].ToString() + "/"; //目標(biāo)路徑 static private string ftpip = ConfigurationManager.AppSettings["FtpServerIP"].ToString(); //ftp IP地址 static private string username = ConfigurationManager.AppSettings["FtpUserName"].ToString(); //ftp用戶名 static private string password = ConfigurationManager.AppSettings["FtpPassWord"].ToString(); //ftp密碼 //獲取ftp上面的文件和文件夾 public static string[] GetFileList(string dir) { string[] downloadFiles; StringBuilder result = new StringBuilder(); FtpWebRequest request; try { request = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + dir)); request.UseBinary = true; request.Credentials = new NetworkCredential(username, password);//設(shè)置用戶名和密碼 request.Method = WebRequestMethods.Ftp.ListDirectory; request.UseBinary = true; request.UsePassive = false; //選擇主動還是被動模式 , 這句要加上的。 request.KeepAlive = false;//一定要設(shè)置此屬性,否則一次性下載多個文件的時候,會出現(xiàn)異常。 WebResponse response = request.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream()); string line = reader.ReadLine(); 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'); } catch (Exception ex) { LogHelper.writeErrorLog("獲取ftp上面的文件和文件夾:" + ex.Message); downloadFiles = null; return downloadFiles; } } /// <summary> /// 從ftp服務(wù)器上獲取文件并將內(nèi)容全部轉(zhuǎn)換成string返回 /// </summary> /// <param name="fileName"></param> /// <param name="dir"></param> /// <returns></returns> public static string GetFileStr(string fileName, string dir) { FtpWebRequest reqFTP; try { reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + dir + "/" + fileName)); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.UsePassive = false; //選擇主動還是被動模式 , 這句要加上的。 reqFTP.KeepAlive = false;//一定要設(shè)置此屬性,否則一次性下載多個文件的時候,會出現(xiàn)異常。 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); Stream ftpStream = response.GetResponseStream(); StreamReader reader = new StreamReader(ftpStream); string fileStr = reader.ReadToEnd(); reader.Close(); ftpStream.Close(); response.Close(); return fileStr; } catch (Exception ex) { LogHelper.writeErrorLog("獲取ftp文件并讀取內(nèi)容失?。?quot; + ex.Message); return null; } } /// <summary> /// 獲取文件大小 /// </summary> /// <param name="file">ip服務(wù)器下的相對路徑</param> /// <returns>文件大小</returns> public static int GetFileSize(string file) { StringBuilder result = new StringBuilder(); FtpWebRequest request; try { request = (FtpWebRequest)FtpWebRequest.Create(new Uri(path + file)); request.UseBinary = true; request.Credentials = new NetworkCredential(username, password);//設(shè)置用戶名和密碼 request.Method = WebRequestMethods.Ftp.GetFileSize; int dataLength = (int)request.GetResponse().ContentLength; return dataLength; } catch (Exception ex) { Console.WriteLine("獲取文件大小出錯:" + ex.Message); return -1; } } /// <summary> /// 文件上傳 /// </summary> /// <param name="filePath">原路徑(絕對路徑)包括文件名</param> /// <param name="objPath">目標(biāo)文件夾:服務(wù)器下的相對路徑 不填為根目錄</param> public static void FileUpLoad(string filePath,string objPath="") { try { string url = path; if(objPath!="") url += objPath + "/"; try { FtpWebRequest reqFTP = null; //待上傳的文件 (全路徑) try { FileInfo fileInfo = new FileInfo(filePath); using (FileStream fs = fileInfo.OpenRead()) { long length = fs.Length; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url + fileInfo.Name)); //設(shè)置連接到FTP的帳號密碼 reqFTP.Credentials = new NetworkCredential(username, password); //設(shè)置請求完成后是否保持連接 reqFTP.KeepAlive = false; //指定執(zhí)行命令 reqFTP.Method = WebRequestMethods.Ftp.UploadFile; //指定數(shù)據(jù)傳輸類型 reqFTP.UseBinary = true; using (Stream stream = reqFTP.GetRequestStream()) { //設(shè)置緩沖大小 int BufferLength = 5120; byte[] b = new byte[BufferLength]; int i; while ((i = fs.Read(b, 0, BufferLength)) > 0) { stream.Write(b, 0, i); } Console.WriteLine("上傳文件成功"); } } } catch (Exception ex) { Console.WriteLine("上傳文件失敗錯誤為" + ex.Message); } finally { } } catch (Exception ex) { Console.WriteLine("上傳文件失敗錯誤為" + ex.Message); } finally { } } catch (Exception ex) { Console.WriteLine("上傳文件失敗錯誤為" + ex.Message); } } /// <summary> /// 刪除文件 /// </summary> /// <param name="fileName">服務(wù)器下的相對路徑 包括文件名</param> public static void DeleteFileName(string fileName) { try { FileInfo fileInf = new FileInfo(ftpip +""+ fileName); string uri = path + fileName; FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // 指定數(shù)據(jù)傳輸類型 reqFTP.UseBinary = true; // ftp用戶名和密碼 reqFTP.Credentials = new NetworkCredential(username, password); // 默認(rèn)為true,連接不會被關(guān)閉 // 在一個命令之后被執(zhí)行 reqFTP.KeepAlive = false; // 指定執(zhí)行什么命令 reqFTP.Method = WebRequestMethods.Ftp.DeleteFile; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); response.Close(); } catch (Exception ex) { Console.WriteLine("刪除文件出錯:" + ex.Message); } } /// <summary> /// 新建目錄 上一級必須先存在 /// </summary> /// <param name="dirName">服務(wù)器下的相對路徑</param> public static void MakeDir(string dirName) { try { string uri = path + dirName; FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // 指定數(shù)據(jù)傳輸類型 reqFTP.UseBinary = true; // ftp用戶名和密碼 reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); response.Close(); } catch (Exception ex) { Console.WriteLine("創(chuàng)建目錄出錯:" + ex.Message); } } /// <summary> /// 刪除目錄 上一級必須先存在 /// </summary> /// <param name="dirName">服務(wù)器下的相對路徑</param> public static void DelDir(string dirName) { try { string uri = path + dirName; FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用戶名和密碼 reqFTP.Credentials = new NetworkCredential(username, password); reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory; FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); response.Close(); } catch (Exception ex) { Console.WriteLine("刪除目錄出錯:" + ex.Message); } } /// <summary> /// 從ftp服務(wù)器上獲得文件夾列表 /// </summary> /// <param name="RequedstPath">服務(wù)器下的相對路徑</param> /// <returns></returns> public static List<string> GetDirctory(string RequedstPath) { List<string> strs = new List<string>(); try { string uri = path + RequedstPath; //目標(biāo)路徑 path為服務(wù)器地址 FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用戶名和密碼 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; } catch (Exception ex) { Console.WriteLine("獲取目錄出錯:" + ex.Message); } return strs; } /// <summary> /// 從ftp服務(wù)器上獲得文件列表 /// </summary> /// <param name="RequedstPath">服務(wù)器下的相對路徑</param> /// <returns></returns> public static List<string> GetFile(string RequedstPath) { List<string> strs = new List<string>(); try { string uri = path + RequedstPath; //目標(biāo)路徑 path為服務(wù)器地址 FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); // ftp用戶名和密碼 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; } catch (Exception ex) { Console.WriteLine("獲取文件出錯:" + ex.Message); } return strs; } } }
關(guān)于C#中FtpHelper對服務(wù)器文件怎么實現(xiàn)讀寫操作就分享到這里了,希望以上內(nèi)容可以對大家有一定的幫助,可以學(xué)到更多知識。如果覺得文章不錯,可以把它分享出去讓更多的人看到。
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