我在发布这个问题之后，一再尝试着让它工作，但没有成功。 我试图在android中使用apache commons库实现FTP文件传输。通信必须通过显式的TLS认证完成。 我可以成功登录，连接到服务器和列表文件，但每当我尝试获取或存储文件时，即使是2Kb的txt文件，我也会得到一个超时异常，并且具有非常大的超时值。 这是我的代码：
I'm posting this question after have tried over and over again to get it working, with no success. I trying to implement a FTP file transfer in android, using apache commons library. The communication must be done through explicit TLS authentication. I can successfully login, connect to the server and list files, but whenever i try to get or store a file, I always get a timeout exception, also with very large timeout value, even for a 2Kb txt file. This is my code:
FTPSClient ftpClient = new FTPSClient("TLS", false); ftpClient.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out))); KeyManagerFactory kmf = getInstance(KeyManagerFactory.getDefaultAlgorithm()); kmf.init(null, null); KeyManager km = kmf.getKeyManagers()[0]; ftpClient.setKeyManager(km); ftpClient.setBufferSize(1024 * 1024); ftpClient.setConnectTimeout(900000); ftpClient.connect(InetAddress.getByName("server ip address"), 990); // Set protection buffer size ftpClient.execPBSZ(0); // // Set data channel protection to private ftpClient.execPROT("P"); ftpClient.login("user", "password"); ftpClient.changeWorkingDirectory("/"); ftpClient.setSoTimeout(900000); ftpClient.setFileType(FTP.BINARY_FILE_TYPE); ftpClient.enterLocalPassiveMode(); buffIn = new BufferedInputStream(new FileInputStream(file.getAbsolutePath())); //this works FTPFile[] files = ftpClient.listFiles(); final OutputStream os = new FileOutputStream(finalStoragePath + "/OK.txt"); //this returns immediatly with false result boolean getResult=ftpClient.retrieveFile("OK.txt", os); //this always fail for timeout boolean result = ftpClient.storeFile( picture.getName(), buffIn );我找不到这个具体情况的例子，所有的例子都是关于正常的FTP连接，我可以实现没有问题。你们有没有类似的问题？我真的需要一个解决方案，我必须尽快提供这个项目。
I can't find any example of this specific situation, all examples out there, are about normal FTP connection, which I can achieve with no problems. Did any of you had a similar problem? I really need a solution, I have to deliver the project ASAP.
谢谢。
推荐答案我终于找到了一个解决方案，解决方案是将信任管理器设置为接受所有证书。这里是那些遇到类似问题的代码，maby它可以改进和/或优化，但它的工作原理：
I have finally found a solution, the solution was to set the trust manager to accept all certificates. here is the code for those who are experiencing similar problems, maby it can be improved and/or optimized, but it works:
FTPSClient ftpClient = new FTPSClient("TLS", false); try { TrustManager[] trustManager = new TrustManager[] { new X509TrustManager() { @Override public X509Certificate[] getAcceptedIssuers() { return null; } @Override public void checkClientTrusted(X509Certificate[] certs, String authType) { } @Override public void checkServerTrusted(X509Certificate[] certs, String authType) { } } }; ftpClient.setTrustManager(trustManager[0]); KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm()); kmf.init(null, null); KeyManager km = kmf.getKeyManagers()[0]; ftpClient.setKeyManager(km); ftpClient.setBufferSize(1024 * 1024); ftpClient.setConnectTimeout(100000); ftpClient.connect(InetAddress.getByName("ipaddress"), 990); ftpClient.setSoTimeout(100000); if (ftpClient.login("user", "password")) { ftpClient.execPBSZ(0); ftpClient.execPROT("P"); ftpClient.changeWorkingDirectory("/"); // 250 = directory succesfully changed if (ftpClient.getReplyString().contains("250")) { ftpClient.setFileType(FTP.BINARY_FILE_TYPE); ftpClient.enterLocalPassiveMode(); BufferedInputStream buffIn = null; for (File picture : pictures) { buffIn = new BufferedInputStream(new FileInputStream(picture.getAbsolutePath())); boolean result = ftpClient.storeFile(picture.getName(), buffIn); try { buffIn.close(); } catch (Exception e) { } if (result) picture.delete(); } } } } catch (SocketException e) { Log.e("APPTAG", e.getStackTrace().toString()); } catch (UnknownHostException e) { Log.e("APPTAG", e.getStackTrace().toString()); } catch (IOException e) { Log.e("APPTAG", e.getStackTrace().toString()); } catch (Exception e) { Log.e("APPTAG", e.getStackTrace().toString()); } finally { try { ftpClient.logout(); } catch (Exception e2) { } try { ftpClient.disconnect(); } catch (Exception e2) { } }更多推荐
android ftp文件转换显式TLS
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