这章把脚本任务访问FTP的方法 全部给大家。
控件的使用大家如果有不懂得可以看下我之前的文章。
第一章：第二章：
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#region 连接FTP服务器 ////// 连接FTP服务器 /// /// 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 public string FTPHelper(string FtpServerIP, string FtpRemotePath) { string ftpURI = "ftp://" + FtpServerIP + "/" + FtpRemotePath + "/"; return ftpURI; } #endregion #region 文件上传FTP服务器 ////// 上传 /// /// 文件详细路径 /// FTPUrl /// 用户名 /// 密码 public void Upload(string FilePathPendingAndName, string FTPUrl, string FTP_UserName, string FTP_PWD) { FileInfo fileInf = new FileInfo(FilePathPendingAndName); FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPUrl + fileInf.Name)); reqFTP.Credentials = new NetworkCredential(FTP_UserName, FTP_PWD); reqFTP.Method = WebRequestMethods.Ftp.UploadFile; reqFTP.KeepAlive = false; 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) { throw new Exception(ex.Message); } } #endregion #region 下载文件 ////// 下载文件 /// /// 本地路径 /// 文件名 /// FTP链接路径 /// 用户名 /// 密码 public void Download(string filePath, string fileName, string ftpUrl, string FTP_UserName, string FTP_PWD) { try { FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create); FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpUrl + fileName)); reqFTP.Credentials = new NetworkCredential(FTP_UserName, FTP_PWD); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; reqFTP.UseBinary = true; 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(); } catch (Exception ex) { throw new Exception(ex.Message); } } #endregion #region 删除文件 ////// 删除文件 /// public void Delete(string fileName) { try { FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName)); reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); reqFTP.Method = WebRequestMethods.Ftp.DeleteFile; reqFTP.KeepAlive = false; 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) { throw new Exception(ex.Message); } } #endregion #region 获取当前目录下文件列表(不包括文件夹) ////// 获取当前目录下文件列表(不包括文件夹) /// /// 连接FTP服务器地址 /// 用户名 /// 密码 ///public string[] GetFileList(string url, string ftpUserName, string ftpPassword) { StringBuilder result = new StringBuilder(); FtpWebRequest reqFTP; try { reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url)); reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPassword); reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails; WebResponse response = reqFTP.GetResponse(); StreamReader reader = new StreamReader(response.GetResponseStream()); string line = reader.ReadLine(); string FileName = ""; while (line != null) { if (line.IndexOf(" ") == -1) { FileName = ""; FileName = Regex.Match(line, @"(?<=IN)([.\S\s]*)(?=csv)", RegexOptions.IgnoreCase).Value.ToString() ; if (FileName.Trim() != "") { FileName = "IN" + FileName + "csv"; result.Append(FileName + "|"); } } line = reader.ReadLine(); } //result.Remove(result.ToString().LastIndexOf('\n'), 1); reader.Close(); response.Close(); } catch (Exception ex) { throw (ex); } return result.ToString().Split('|'); } #endregion #region 判断当前目录下指定的文件是否存在 /// /// 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 FTPUrl, string RemoteFileName, string FTP_UserName, string FTP_PWD) { string FileName = "IN_NORMAL_" + Regex.Match(RemoteFileName, @"(?<=IN_NORMAL_)([.\S\s]*)(?=csv)", RegexOptions.IgnoreCase).Value.ToString() + "csv"; string[] fileList = GetFileList(FTPUrl, FTP_UserName, FTP_PWD); foreach (string str in fileList) { if (str.Trim()==FileName.Trim()) { return true; } } return false; } #endregion #region 更改文件名 ////// 更改文件名 /// /// 现有文件名称 /// 新的文件名称 /// FTPUrl /// 用户名 /// 密码 public void ReName(string currentFilename, string newFilename, string FTPUrl, string FTP_UserName, string FTP_PWD) { FtpWebRequest reqFTP; try { reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPUrl + currentFilename)); reqFTP.Method = WebRequestMethods.Ftp.Rename; reqFTP.RenameTo = newFilename; reqFTP.UseBinary = true; reqFTP.Credentials = new NetworkCredential(FTP_UserName, FTP_PWD); FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); Stream ftpStream = response.GetResponseStream(); //File.Move() ftpStream.Close(); response.Close(); } catch (Exception ex) { } } #endregion #region 移动文件夹 ////// 移动文件夹 /// /// 现有文件名称 /// 新的文件名称 /// FTPUrl /// 用户名 /// 密码 public void MovieFile(string currentFilename, string newDirectory,string FTPUrl, string FTP_UserName, string FTP_PWD) { ReName(currentFilename, newDirectory, FTPUrl, FTP_UserName, FTP_PWD); } #endregion #region 创建文件夹 ////// 创建文件夹 /// public void MakeDir(string dirName) { FtpWebRequest reqFTP; try { 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) { } } #endregion #region 获取指定文件大小 ////// 获取指定文件大小 /// 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) { } return fileSize; } #endregion
至此 SSIS 学习之旅 到这里就结束了。希望对大家的工作有所帮助吧。