设置FTP客户端为被动模式

zoutuo 2009-10-07 12:41:33

我所使用的FTP服务器不支持主动连接方式，所以我的程序需要将连接方式设置成为被动。我已经设置成为被动模式了，但是无法上传文件。下面是我的代码，请大虾过目：
连接服务器并设置为被动模式：



	public void connectServer(String ip, int port, String user, String password, String path, JTextArea textArea) {

		try {

			ftpClient = new FtpClient();

			setConnectTimeOut(5000);

			ftpClient.openServer(ip, port);

			ftpClient.login(user, password);

//			textArea.append(ReadFiles.getDate() + "   登陆成功！\n");

//			textArea.setCaretPosition(textArea.getText().length());

			System.out.println("登陆成功！");

			if (path.length() != 0){

				ftpClient.cd(path);

			}

			ftpClient.binary();

			ftpClient.sendServer("PASV");

		} catch (IOException ex) {

//			textArea.append(ReadFiles.getDate() + "   登陆失败！"+ex+"\n");

//			textArea.setCaretPosition(textArea.getText().length());

			System.out.println("登陆失败！");

			System.out.println(ex);

			ex.printStackTrace();

			resetFtpClient();

			connectServer(ip, port, user, password, path, textArea);

		}

	}

上传文件：



	public void upload(String path, String localfilename, String remotefilename, JTextArea textArea) {

		changeDirs(path, textArea);

		this.localfilename = localfilename; // c:/1.txt

		this.remotefilename = remotefilename;// 1.txt

		System.out.println("UPLOADING...");

		textArea.append(ReadFiles.getDate() + "   正在上传       [" + remotefilename + "]...\n");

		textArea.setCaretPosition(textArea.getText().length());

		try {

			TelnetOutputStream out = ftpClient.put(this.remotefilename);

			File file_in = new File(this.localfilename);

			FileInputStream in = new FileInputStream(file_in);

			byte[] bytes = new byte[1024];

			int c;

			while ((c = in.read(bytes)) != -1) {

				out.write(bytes, 0, c);

			}

			textArea.append(ReadFiles.getDate() + "   上传文件       [" + remotefilename + "]成功！\n");

			textArea.setCaretPosition(textArea.getText().length());

			in.close();

			out.close();

		} catch (IOException ex) {

			ex.printStackTrace();

			System.out.println("ERROR!");

			textArea.append(ex + "\n");

			textArea.append(ReadFiles.getDate() + "   上传文件失败！\n");

			textArea.setCaretPosition(textArea.getText().length());

			

			resetFtpClient();

			connectServer(host, port, username, password, path, textArea);

			upload(path, localfilename, remotefilename, textArea);

		}

	}

以下是异常：



sun.net.ftp.FtpProtocolException: REIN:502 REIN not implemented.

将FTP连接设置为被动模式，谢谢！！！

	void resetFtpClient(){

		try {

			if(ftpClient.serverIsOpen()){

				ftpClient.reInit();

			}

		} catch (IOException e) {

			e.printStackTrace();

			return;

		}

	}

进入异常后，执行上面这个方法时报错：
ftpClient.reInit();

谢谢各位！

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