c#实现FTP上传
C
- /// <summary>
- /// 上传文件
- /// </summary>
- /// <param name="fileinfo">需要上传的文件</param>
- /// <param name="targetDir">目标路径</param>
- /// <param name="hostname">ftp地址</param>
- /// <param name="username">ftp用户名</param>
- /// <param name="password">ftp密码</param>
- public static void UploadFile(FileInfo fileinfo, string targetDir, string hostname, string username, string password)
- {
- //1. check target
- string target;
- if (targetDir.Trim() == "")
- {
- return;
- }
- target = Guid.NewGuid().ToString(); //使用临时文件名
-
-
- string URI = "FTP://" + hostname + "/" + targetDir + "/" + target;
- ///WebClient webcl = new WebClient();
- System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);
-
- //设置FTP命令 设置所要执行的FTP命令,
- //ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails;//假设此处为显示指定路径下的文件列表
- ftp.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
- //指定文件传输的数据类型
- ftp.UseBinary = true;
- ftp.UsePassive = true;
-
- //告诉ftp文件大小
- ftp.ContentLength = fileinfo.Length;
- //缓冲大小设置为2KB
- const int BufferSize = 2048;
- byte[] content = new byte[BufferSize - 1 + 1];
- int dataRead;
-
- //打开一个文件流 (System.IO.FileStream) 去读上传的文件
- using (FileStream fs = fileinfo.OpenRead())
- {
- try
- {
- //把上传的文件写入流
- using (Stream rs = ftp.GetRequestStream())
- {
- do
- {
- //每次读文件流的2KB
- dataRead = fs.Read(content, 0, BufferSize);
- rs.Write(content, 0, dataRead);
- } while (!(dataRead < BufferSize));
- rs.Close();
- }
-
- }
- catch (Exception ex) { }
- finally
- {
- fs.Close();
- }
-
- }
-
- ftp = null;
- //设置FTP命令
- ftp = GetRequest(URI, username, password);
- ftp.Method = System.Net.WebRequestMethods.Ftp.Rename; //改名
- ftp.RenameTo = fileinfo.Name;
- try
- {
- ftp.GetResponse();
- }
- catch (Exception ex)
- {
- ftp = GetRequest(URI, username, password);
- ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; //删除
- ftp.GetResponse();
- throw ex;
- }
- finally
- {
- //fileinfo.Delete();
- }
-
- // 可以记录一个日志 "上传" + fileinfo.FullName + "上传到" + "FTP://" + hostname + "/" + targetDir + "/" + fileinfo.Name + "成功." );
- ftp = null;
-
- #region
- /*****
- *FtpWebResponse
- * ****/
- //FtpWebResponse ftpWebResponse = (FtpWebResponse)ftp.GetResponse();
- #endregion
- }
-
- private static FtpWebRequest GetRequest(string URI, string username, string password)
- {
- //根据服务器信息FtpWebRequest创建类的对象
- FtpWebRequest result = (FtpWebRequest)FtpWebRequest.Create(URI);
- //提供身份验证信息
- result.Credentials = new System.Net.NetworkCredential(username, password);
- //设置请求完成之后是否保持到FTP服务器的控制连接,默认值为true
- result.KeepAlive = false;
- return result;
- }
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