ftp删除文件

                 /**
	  * 递归下载文件
	  * 
	  * @param localPath
	  * @param remotePath
	  */
	public void processdownload(String localPath, String remotePath) {
		FileOutputStream os = null;
		try {
			ArrayList listfileName = getNameList(remotePath);
			ftpClient.cd(remotePath);
			ftpClient.binary();
			for (int j = 0; j < listfileName.size(); j++) {
				TelnetInputStream is = ftpClient.get(listfileName.get(j).toString());
				File file_out = new File(localPath + File.separator + listfileName.get(j).toString());
				os = new FileOutputStream(file_out);
				byte[] bytes = new byte[1024];
				int c;
				while ((c = is.read(bytes)) != -1) {
					os.write(bytes, 0, c);
				}
				is.close();
				os.close();
				deleteLoadFile(listfileName.get(j).toString());
				System.out.println("成功下载文件：" + remotePath + File.separator + listfileName.get(j).toString());
			}
			ftpClient.closeServer();
		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			try {
				os.close();
				ftpClient.closeServer();
			} catch (Exception ex) {
				ex.printStackTrace();
			}
		}
	}

 删除ftp上的文件

public void deleteLoadFile(String fileName) throws Exception {
		try {
			if (ftpClient != null) {
				String del = "DELE " + fileName + " \r\n";
				System.out.print(del); // 输出执行的命令
				ftpClient.sendServer(del);
				ftpClient.readServerResponse();
			}
		} catch (IOException e) {
			throw new Exception("ftp delete file error:" + e.getMessage());
		}
	}