java连接ftp服务器

/**
	 * 设置FTP客服端的配置
	 * 
	 * @return
	 */
	private FTPClientConfig getFtpConfig() {
		FTPClientConfig ftpConfig = new FTPClientConfig(
				FTPClientConfig.SYST_UNIX);
		ftpConfig.setServerLanguageCode(FTP.DEFAULT_CONTROL_ENCODING);
		return ftpConfig;
	}

 

/**
	 * 连接到服务器
	 * 
	 * @param ip
	 * @param user
	 * @param pwd
	 * @param defaultPort
	 * @return true 连接服务器成功，false 连接服务器失败
	 * @throws Exception
	 */
	public boolean connectServer(String ip, String user, String pwd,
			int defaultPort) throws Exception {
		boolean flag = true;
		int reply;
		try {
			FTPClient ftpClient = new FTPClient();
			ftpClient.setControlEncoding("GBK");
			ftpClient.setDefaultPort(defaultPort);
			ftpClient.configure(getFtpConfig());
			ftpClient.connect(ip);
			ftpClient.login(user, pwd);
			reply = ftpClient.getReplyCode();
			ftpClient.setDataTimeout(120000);

			if (!FTPReply.isPositiveCompletion(reply)) {
				ftpClient.disconnect();
				logger.debug("FTP 服务拒绝连接！");
				flag = false;
			}
		} catch (SocketException e) {
			flag = false;
			logger.debug("登录ftp服务器【" + serverIp + "】失败,连接超时！");
			throw e;
		} catch (IOException e) {
			flag = false;
			logger.debug("登录ftp服务器【" + serverIp + "】失败，FTP服务器无法打开！");
			throw e;
		}

		return flag;
	}