C#一个FTP操作封装类FTPHelper

参考了网上一些代码，作了一些调整优化。

001 using System;

002 using System.Collections.Generic;

003 using System.Linq;

004 using System.Text;

005 using System.Net;

006 using System.IO;

007

008 public class FTPHelper

009 {

010 /// <summary>

011 /// FTP请求对象

012 /// </summary>

013 FtpWebRequest request = null;

014 /// <summary>

015 /// FTP响应对象

016 /// </summary>

017 FtpWebResponse response = null;

018 /// <summary>

019 /// FTP服务器地址

020 /// </summary>

021 public string ftpURI { get; private set; }

022 /// <summary>

023 /// FTP服务器IP

024 /// </summary>

025 public string ftpServerIP { get; private set; }

026 /// <summary>

027 /// FTP服务器默认目录

028 /// </summary>

029 public string ftpRemotePath { get; private set; }

030 /// <summary>

031 /// FTP服务器登录用户名

032 /// </summary>

033 public string ftpUserID { get; private set; }

034 /// <summary>

035 /// FTP服务器登录密码

036 /// </summary>

037 public string ftpPassword { get; private set; }

038

039 /// <summary>

040 /// 初始化

041 /// </summary>

042 /// <param name="FtpServerIP">FTP连接地址</param>

043 /// <param name="FtpRemotePath">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</param>

044 /// <param name="FtpUserID">用户名</param>

045 /// <param name="FtpPassword">密码</param>

046 public FTPHelper(string ftpServerIP, string ftpRemotePath, string ftpUserID, stringftpPassword)

047 {

048 this.ftpServerIP = ftpServerIP;

049 this.ftpRemotePath = ftpRemotePath;

050 this.ftpUserID = ftpUserID;

051 this.ftpPassword = ftpPassword;

052 this.ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";

053 }

054 ~FTPHelper()

055 {

056 if (response != null)

057 {

058 response.Close();

059 response = null;

060 }

061 if (request != null)

062 {

063 request.Abort();

064 request = null;

065 }

066 }

067 /// <summary>

068 /// 建立FTP链接,返回响应对象

069 /// </summary>

070 /// <param name="uri">FTP地址</param>

071 /// <param name="ftpMethod">操作命令</param>

072 /// <returns></returns>

073 private FtpWebResponse Open(Uri uri, string ftpMethod)

074 {

075 request = (FtpWebRequest)FtpWebRequest.Create(uri);

076 request.Method = ftpMethod;

077 request.UseBinary = true;

078 request.KeepAlive = false;

079 request.Credentials = new NetworkCredential(this.ftpUserID, this.ftpPassword);

080 return (FtpWebResponse)request.GetResponse();

081 }

082

083 /// <summary>

084 /// 建立FTP链接,返回请求对象

085 /// </summary>

086 /// <param name="uri">FTP地址</param>

087 /// <param name="ftpMethod">操作命令</param>

088 private FtpWebRequest OpenRequest(Uri uri, string ftpMethod)

089 {

090 request = (FtpWebRequest)WebRequest.Create(uri);

091 request.Method = ftpMethod;

092 request.UseBinary = true;

093 request.KeepAlive = false;

094 request.Credentials = new NetworkCredential(this.ftpUserID, this.ftpPassword);

095 return request;

096 }

097 /// <summary>

098 /// 创建目录

099 /// </summary>

100 /// <param name="remoteDirectoryName">目录名</param>

101 public void CreateDirectory(string remoteDirectoryName)

102 {

103 response = Open(newUri(ftpURI + remoteDirectoryName), WebRequestMethods.Ftp.MakeDirectory);

104 }

105 /// <summary>

106 /// 更改目录或文件名

107 /// </summary>

108 /// <param name="currentName">当前名称</param>

109 /// <param name="newName">修改后新名称</param>

110 public void ReName(string currentName, string newName)

111 {

112 request = OpenRequest(newUri(ftpURI + currentName), WebRequestMethods.Ftp.Rename);

113 request.RenameTo = newName;

114 response = (FtpWebResponse)request.GetResponse();

115 }

116 /// <summary>

117 /// 切换当前目录

118 /// </summary>

119 /// <param name="IsRoot">true:绝对路径 false:相对路径</param>

120 public void GotoDirectory(string DirectoryName, bool IsRoot)

121 {

122 if (IsRoot)

123 ftpRemotePath = DirectoryName;

124 else

125 ftpRemotePath += "/" + DirectoryName;

126

127 ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";

128 }

129 /// <summary>

130 /// 删除目录(包括下面所有子目录和子文件)

131 /// </summary>

132 /// <param name="remoteDirectoryName">要删除的带路径目录名：如web/test</param>

133 /*

134 * 例：删除test目录

135 FTPHelper helper = new FTPHelper("x.x.x.x", "web", "user", "password");

136 helper.RemoveDirectory("web/test");

137 */

138 public void RemoveDirectory(string remoteDirectoryName)

139 {

140 GotoDirectory(remoteDirectoryName, true);

141 var listAll = ListFilesAndDirectories();

142 foreach (var m in listAll)

143 {

144 if(m.IsDirectory)

145 RemoveDirectory(m.Path);

146 else

147 DeleteFile(m.Name);

148 }

149 GotoDirectory(remoteDirectoryName, true);

150 response = Open(new Uri(ftpURI), WebRequestMethods.Ftp.RemoveDirectory);

151 }

152 /// <summary>

153 /// 文件上传

154 /// </summary>

155 /// <param name="localFilePath">本地文件路径</param>

156 public void Upload(string localFilePath)

157 {

158 FileInfo fileInf = new FileInfo(localFilePath);

159 request = OpenRequest(newUri(ftpURI + fileInf.Name), WebRequestMethods.Ftp.UploadFile);

160 request.ContentLength = fileInf.Length;

161 int buffLength = 2048;

162 byte[] buff = new byte[buffLength];

163 int contentLen;

164 using (var fs = fileInf.OpenRead())

165 {

166 using (var strm = request.GetRequestStream())

167 {

168 contentLen = fs.Read(buff, 0, buffLength);

169 while (contentLen != 0)

170 {

171 strm.Write(buff, 0, contentLen);

172 contentLen = fs.Read(buff, 0, buffLength);

173 }

174 }

175 }

176 }

177 /// <summary>

178 /// 删除文件

179 /// </summary>

180 /// <param name="remoteFileName">要删除的文件名</param>

181 public void DeleteFile(string remoteFileName)

182 {

183 response = Open(newUri(ftpURI + remoteFileName), WebRequestMethods.Ftp.DeleteFile);

184 }

185

186 /// <summary>

187 /// 获取当前目录的文件和一级子目录信息

188 /// </summary>

189 /// <returns></returns>

190 public List<FileStruct> ListFilesAndDirectories()

191 {

192 var fileList = new List<FileStruct>();

193 response = Open(new Uri(ftpURI), WebRequestMethods.Ftp.ListDirectoryDetails);

194 using (var stream = response.GetResponseStream())

195 {

196 using (var sr = new StreamReader(stream))

197 {

198 string line = null;

199 while ((line = sr.ReadLine()) != null)

200 {

201 //line的格式如下：

202 //08-18-13 11:05PM <DIR> aspnet_client

203 //09-22-13 11:39PM 2946 Default.aspx

204 DateTime dtDate = DateTime.ParseExact(line.Substring(0, 8), "MM-dd-yy", null);

205 DateTime dtDateTime = DateTime.Parse(dtDate.ToString("yyyy-MM-dd") + line.Substring(8, 9));

206 string[] arrs = line.Split(' ');

207 var model = new FileStruct()

208 {

209 IsDirectory = line.IndexOf("<DIR>") > 0 ? true : false,

210 CreateTime = dtDateTime,

211 Name = arrs[arrs.Length - 1],

212 Path = ftpRemotePath + "/" + arrs[arrs.Length - 1]

213 };

214 fileList.Add(model);

215 }

216 }

217 }

218 return fileList;

219 }

220 /// <summary>

221 /// 列出当前目录的所有文件

222 /// </summary>

223 public List<FileStruct> ListFiles()

224 {

225 var listAll = ListFilesAndDirectories();

226 var listFile = listAll.Where(m => m.IsDirectory == false).ToList();

227 return listFile;

228 }

229 /// <summary>

230 /// 列出当前目录的所有一级子目录

231 /// </summary>

232 public List<FileStruct> ListDirectories()

233 {

234 var listAll = ListFilesAndDirectories();

235 var listFile = listAll.Where(m => m.IsDirectory == true).ToList();

236 return listFile;

237 }

238 /// <summary>

239 /// 判断当前目录下指定的子目录或文件是否存在

240 /// </summary>

241 /// <param name="remoteName">指定的目录或文件名</param>

242 public bool IsExist(string remoteName)

243 {

244 var list = ListFilesAndDirectories();

245 if (list.Count(m => m.Name == remoteName) > 0)

246 return true;

247 return false;

248 }

249 /// <summary>

250 /// 判断当前目录下指定的一级子目录是否存在

251 /// </summary>

252 /// <param name="RemoteDirectoryName">指定的目录名</param>

253 public bool IsDirectoryExist(string remoteDirectoryName)

254 {

255 var listDir = ListDirectories();

256 if (listDir.Count(m => m.Name == remoteDirectoryName) > 0)

257 return true;

258 return false;

259 }

260 /// <summary>

261 /// 判断当前目录下指定的子文件是否存在

262 /// </summary>

263 /// <param name="RemoteFileName">远程文件名</param>

264 public bool IsFileExist(string remoteFileName)

265 {

266 var listFile = ListFiles();

267 if (listFile.Count(m => m.Name == remoteFileName) > 0)

268 return true;

269 return false;

270 }

271

272 /// <summary>

273 /// 下载

274 /// </summary>

275 /// <param name="saveFilePath">下载后的保存路径</param>

276 /// <param name="downloadFileName">要下载的文件名</param>

277 public void Download(string saveFilePath, string downloadFileName)

278 {

279 using (FileStream outputStream = new FileStream(saveFilePath + "\\"+ downloadFileName, FileMode.Create))

280 {

281 response = Open(newUri(ftpURI + downloadFileName), WebRequestMethods.Ftp.DownloadFile);

282 using (Stream ftpStream = response.GetResponseStream())

283 {

284 long cl = response.ContentLength;

285 int bufferSize = 2048;

286 int readCount;

287 byte[] buffer = new byte[bufferSize];

288 readCount = ftpStream.Read(buffer, 0, bufferSize);

289 while (readCount > 0)

290 {

291 outputStream.Write(buffer, 0, readCount);

292 readCount = ftpStream.Read(buffer, 0, bufferSize);

293 }

294 }

295 }

296 }

297

298

299 }

300

301 public class FileStruct

302 {

303 /// <summary>

304 /// 是否为目录

305 /// </summary>

306 public bool IsDirectory { get; set; }

307 /// <summary>

308 /// 创建时间

309 /// </summary>

310 public DateTime CreateTime { get; set; }

311 /// <summary>

312 /// 文件或目录名称

313 /// </summary>

314 public string Name { get; set; }

315 /// <summary>

316 /// 路径

317 /// </summary>

318 public string Path { get; set; }

319 }

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