Java Code Examples for org.apache.commons.net.ftp.FTPClient#login()

/**
 * Connect.
 *
 * @throws Exception the exception
 */
@Override
public void connect() throws Exception {
	try {
		ftpClient = new FTPClient();
		ftpClient.connect(host, port);
		if (usePassiveMode) {
			ftpClient.enterLocalPassiveMode();
		}
		if (!ftpClient.login(user, password)) {
			ftpClient.logout();
			throw new Exception("Authentication failed");
           }
	} catch (Exception e) {
		close();
		throw new Exception("Connection failed");
	}
}
 

public static boolean uploadPicture(String FTP_HOSTNAME,int FTP_PORT,String FTP_USERNAME,String FTP_PASSWORD,String FTP_REMOTE_PATH,String picName,InputStream fileInputStream)throws IOException {
    //创建一个FtpClient
    FTPClient ftpClient = new FTPClient();
    //连接的ip和端口号
    ftpClient.connect(FTP_HOSTNAME,FTP_PORT);
    //登陆的用户名和密码
    ftpClient.login(FTP_USERNAME,FTP_PASSWORD);
    //将文件转换成输入流
    //修改文件的存放地址
    ftpClient.changeWorkingDirectory(FTP_REMOTE_PATH);
    //设置文件的上传格式
    ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
    //将我们的文件流以什么名字存放
    boolean result = ftpClient.storeFile(picName,fileInputStream);
    //退出
    ftpClient.logout();
    return result;
}
 

public static void ftpUpload(FTPConfig config, String directory, File file, String remoteFileName)
    throws IOException
{
  FTPClient server = new FTPClient();
  server.connect(config.host, config.port);
  assertValidReplyCode(server.getReplyCode(), server);
  server.login(config.userName, config.password);
  assertValidReplyCode(server.getReplyCode(), server);
  assertValidReplyCode(server.cwd(directory), server);
  server.setFileTransferMode(FTP.BINARY_FILE_TYPE);
  server.setFileType(FTP.BINARY_FILE_TYPE);
  server.storeFile(remoteFileName, new FileInputStream(file));
  assertValidReplyCode(server.getReplyCode(), server);
  server.sendNoOp();
  server.disconnect();
}
 

private boolean uploadAll() {
    FTPClient ftpClient = new FTPClient();
    try {
        ftpClient.connect(FTP_HOST, FTP_PORT);
        if (!ftpClient.login(FTP_USER, FTP_PASSWORD)) {
            return false;
        }
        String dirName = getDirName();
        ftpClient.makeDirectory(dirName);
        ftpClient.enterLocalPassiveMode();
        ftpClient.setFileType(FTP.BINARY_FILE_TYPE, FTP.BINARY_FILE_TYPE);
        ftpClient.setFileTransferMode(FTP.BINARY_FILE_TYPE);
        boolean result = true;
        for (File file: files) {
            result &= upload(ftpClient, file, dirName + "/" + file.getName());
        }
        return result;
    } catch (IOException e) {
        Log.e(BugReportSenderFtp.class.getSimpleName(), "FTP network error: " + e.getMessage());
    } finally {
        closeSilently(ftpClient);
    }
    return false;
}
 

private void initFTPClient(){
    try{
        ftpClient = new FTPClient();
        ftpClient.setControlEncoding("utf-8");
        ftpClient.connect(hostName,port);
        ftpClient.login(userName,password);
    }catch (Exception e){
        log.error("初始化FTP失败",e);
    }
}
 

private FTPClient getFTPClient(final String ftpServer, final String username, final String password)
        throws Exception {
    final FTPClient ftpClient = new FTPClient();
    ftpClient.connect(ftpServer);
    ftpClient.login(username, password);
    ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
    ftpClient.enterLocalPassiveMode();
    return ftpClient;
}
 

/**
 * Uploads a file to an Azure function app.
 * @param profile the publishing profile for the web app.
 * @param fileName the name of the file on server
 * @param file the local file
 */
public static void uploadFileToFunctionApp(PublishingProfile profile, String fileName, InputStream file) {
    FTPClient ftpClient = new FTPClient();
    String[] ftpUrlSegments = profile.ftpUrl().split("/", 2);
    String server = ftpUrlSegments[0];
    String path = "site/wwwroot";
    if (fileName.contains("/")) {
        int lastslash = fileName.lastIndexOf('/');
        path = path + "/" + fileName.substring(0, lastslash);
        fileName = fileName.substring(lastslash + 1);
    }
    try {
        ftpClient.connect(server);
        ftpClient.login(profile.ftpUsername(), profile.ftpPassword());
        ftpClient.setFileType(FTP.ASCII_FILE_TYPE);
        for (String segment : path.split("/")) {
            if (!ftpClient.changeWorkingDirectory(segment)) {
                ftpClient.makeDirectory(segment);
                ftpClient.changeWorkingDirectory(segment);
            }
        }
        ftpClient.storeFile(fileName, file);
        ftpClient.disconnect();
    } catch (IOException e) {
        e.printStackTrace();
    }
}
 

/** 
 * 连接到ftp服务器 
 *  
 * @param ftpClient 
 * @return 连接成功返回true，否则返回false 
 * @throws Exception
 */  
private boolean connect(FTPClient ftpClient)throws Exception {
    try {  
        ftpClient.connect(host, port);  
  
        // 连接后检测返回码来校验连接是否成功  
        int reply = ftpClient.getReplyCode();  
  
        if (FTPReply.isPositiveCompletion(reply)) {
            //登陆到ftp服务器  
            if (ftpClient.login(username, password)) {  
                setFileType(ftpClient);  
                return true;  
            }  
        } else {  
            ftpClient.disconnect();  
            throw new Exception("FTP server refused connection.");
        }  
    } catch (IOException e) {
        if (ftpClient.isConnected()) {  
            try {  
                ftpClient.disconnect(); //断开连接  
            } catch (IOException e1) {
                throw new Exception("Could not disconnect from server.", e1);
            }  
  
        }  
        throw new Exception("Could not connect to server.", e);
    }  
    return false;  
}
 

private boolean connectServer(String ip,int port,String user,String pwd){

        boolean isSuccess = false;
        ftpClient = new FTPClient();
        try {
            ftpClient.connect(ip);
            isSuccess = ftpClient.login(user,pwd);
        } catch (IOException e) {
            logger.error("连接FTP服务器异常",e);
        }
        return isSuccess;
    }
 

/**
 * Uploads a file to an Azure web app.
 * @param profile the publishing profile for the web app.
 * @param fileName the name of the file on server
 * @param file the local file
 */
public static void uploadFileToWebAppWwwRoot(PublishingProfile profile, String fileName, InputStream file) {
    FTPClient ftpClient = new FTPClient();
    String[] ftpUrlSegments = profile.ftpUrl().split("/", 2);
    String server = ftpUrlSegments[0];
    String path = "./site/wwwroot";
    if (fileName.contains("/")) {
        int lastslash = fileName.lastIndexOf('/');
        path = path + "/" + fileName.substring(0, lastslash);
        fileName = fileName.substring(lastslash + 1);
    }
    try {
        ftpClient.connect(server);
        ftpClient.login(profile.ftpUsername(), profile.ftpPassword());
        ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
        for (String segment : path.split("/")) {
            if (!ftpClient.changeWorkingDirectory(segment)) {
                ftpClient.makeDirectory(segment);
                ftpClient.changeWorkingDirectory(segment);
            }
        }
        ftpClient.storeFile(fileName, file);
        ftpClient.disconnect();
    } catch (IOException e) {
        e.printStackTrace();
    }
}
 

void open() throws IOException {
    ftp = new FTPClient();

    ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));

    ftp.connect(server, port);
    int reply = ftp.getReplyCode();
    if (!FTPReply.isPositiveCompletion(reply)) {
        ftp.disconnect();
        throw new IOException("Exception in connecting to FTP Server");
    }

    ftp.login(user, password);
}
 

private static void verifyCredentials(ResultBuilder builder, Map<String, Object> parameters) {

        final String host = ConnectorOptions.extractOption(parameters, "host");
        final Integer port = ConnectorOptions.extractOptionAndMap(parameters, "port", Integer::parseInt, 21);
        final String userName = ConnectorOptions.extractOption(parameters, "username", "anonymous");

        String password = "";
        if (! "anonymous".equals(userName)) {
            password = ConnectorOptions.extractOption(parameters, "password", password);
        }

        int reply;
        FTPClient ftp = new FTPClient();

        String illegalParametersMessage = "Unable to connect to the FTP server";
        boolean hasValidParameters = false;

        try {
            ftp.connect(host, port);
            reply = ftp.getReplyCode();
            hasValidParameters = FTPReply.isPositiveCompletion(reply);
        } catch (IOException e) {
            illegalParametersMessage = e.getMessage();
        }

        if (!hasValidParameters) {
            builder.error(
                    ResultErrorBuilder.withCodeAndDescription(VerificationError.StandardCode.ILLEGAL_PARAMETER_VALUE,
                            illegalParametersMessage).parameterKey("host").parameterKey("port").build());

        } else {

            boolean isAuthenticated = false;
            String authentionErrorMessage = "Authentication failed";

            try {
                isAuthenticated = ftp.login(userName, password);
            } catch (IOException ioe) {
                authentionErrorMessage = ioe.getMessage();
            }
            if (!isAuthenticated) {

                builder.error(ResultErrorBuilder
                        .withCodeAndDescription(VerificationError.StandardCode.AUTHENTICATION, authentionErrorMessage)
                        .parameterKey("username").parameterKey("password").build());

            } else {
                try {
                    ftp.logout();
                    ftp.disconnect();
                } catch (IOException ignored) {
                    // ignore
                }

            }
        }

    }
 

/**
 * 下载文件并且存至tfs文件系统
 * 
 * @param remoteFileNameTmp
 * @param
 * @return
 */
private Map downLoadFileToTable(String remoteFileNameTmp, FTPClientTemplate ftpClientTemplate, Map ftpItemConfigInfo) {
	Map resultInfo = new HashMap();
	String tfsReturnFileName = null;
	long block = 10 * 1024;// 默认
	if (ftpClientTemplate == null) {
		resultInfo.put("SAVE_FILE_FLAG", "E");
		return resultInfo;
	}
	String localPathName = ftpItemConfigInfo.get("localPath").toString().endsWith("/") ? ftpItemConfigInfo.get("localPath").toString()
			+ ftpItemConfigInfo.get("newFileName").toString() : ftpItemConfigInfo.get("localPath").toString() + "/" + ftpItemConfigInfo.get("newFileName").toString();
	ftpItemConfigInfo.put("localfilename", localPathName);// 本地带路径的文件名回写，后面读文件时使用
	try {
		File file = new File(localPathName);
		RandomAccessFile accessFile = new RandomAccessFile(file, "rwd");// 建立随机访问
		FTPClient ftpClient = new FTPClient();
		ftpClient.connect(ftpClientTemplate.getHost(), ftpClientTemplate.getPort());
		if (FTPReply.isPositiveCompletion(ftpClient.getReplyCode())) {
			if (!ftpClient.login(ftpClientTemplate.getUsername(), ftpClientTemplate.getPassword())) {
				resultInfo.put("SAVE_FILE_FLAG", "E");
				resultInfo.put("remark", "登录失败,用户名【" + ftpClientTemplate.getUsername() + "】密码【" + ftpClientTemplate.getPassword() + "】");
				return resultInfo;
			}
		}
		ftpClient.setControlEncoding("UTF-8");
		ftpClient.setFileType(FTP.BINARY_FILE_TYPE); // 二进制
		ftpClient.enterLocalPassiveMode(); // 被动模式
		ftpClient.sendCommand("PASV");
		ftpClient.sendCommand("SIZE " + remoteFileNameTmp + "\r\n");
		String replystr = ftpClient.getReplyString();
		String[] replystrL = replystr.split(" ");
		long filelen = 0;
		if (Integer.valueOf(replystrL[0]) == 213) {
			filelen = Long.valueOf(replystrL[1].trim());
		} else {
			resultInfo.put("SAVE_FILE_FLAG", "E");
			resultInfo.put("remark", "无法获取要下载的文件的大小!");
			return resultInfo;
		}
		accessFile.setLength(filelen);
		accessFile.close();
		ftpClient.disconnect();

		int tnum = Integer.valueOf(ftpItemConfigInfo.get("TNUM").toString());
		block = (filelen + tnum - 1) / tnum;// 每个线程下载的快大小
		ThreadPoolExecutor cachedThreadPool = (ThreadPoolExecutor) Executors.newCachedThreadPool();
		List<Future<Map>> threadR = new ArrayList<Future<Map>>();
		for (int i = 0; i < tnum; i++) {
			logger.debug("发起线程：" + i);
			// 保存线程日志
			ftpItemConfigInfo.put("threadrunstate", "R");
			ftpItemConfigInfo.put("remark", "开始下载文件");
			ftpItemConfigInfo.put("data", "文件名：" + remoteFileNameTmp);
			long start = i * block;
			long end = (i + 1) * block - 1;
			ftpItemConfigInfo.put("begin", start);
			ftpItemConfigInfo.put("end", end);
			saveTaskLogDetail(ftpItemConfigInfo);
			Map para = new HashMap();
			para.putAll(ftpItemConfigInfo);
			para.put("serverfilename", remoteFileNameTmp);
			para.put("filelength", filelen);
			para.put("tnum", i + 0);
			para.put("threadDownSize", block);
			para.put("transferflag", FTPClientTemplate.TransferType.download);
			FTPClientTemplate dumpThread = new FTPClientTemplate(para);
			Future<Map> runresult = cachedThreadPool.submit(dumpThread);
			threadR.add(runresult);
		}

		do {
			// 等待下载完成
			Thread.sleep(1000);
		} while (cachedThreadPool.getCompletedTaskCount() < threadR.size());

		saveDownFileData(ftpItemConfigInfo);
		// 下载已经完成，多线程保存数据至表中

	} catch (Exception e) {
		// TODO Auto-generated catch block
		logger.error("保存文件失败：", e);
		resultInfo.put("SAVE_FILE_FLAG", "E");
		resultInfo.put("remark", "保存文件失败：" + e);
		return resultInfo;
	}
	resultInfo.put("SAVE_FILE_FLAG", "S");
	return resultInfo;

}
 

private void login(FTPClient ftp, String user, String password) throws FTPException, IOException {
    ftp.login(user, password);
    checkReply("user " + user, ftp);
}
 

/**
 * @return
 * @throws IOException
 */
public SortedMap<String, CFDA> getGovCodes() throws IOException {
    Calendar calendar = dateTimeService.getCurrentCalendar();
    SortedMap<String, CFDA> govMap = new TreeMap<String, CFDA>();

    // ftp://ftp.cfda.gov/programs09187.csv
    String govURL = parameterService.getParameterValueAsString(CfdaBatchStep.class, KFSConstants.SOURCE_URL_PARAMETER);
    String fileName = StringUtils.substringAfterLast(govURL, "/");
    govURL = StringUtils.substringBeforeLast(govURL, "/");
    if (StringUtils.contains(govURL, "ftp://")) {
        govURL = StringUtils.remove(govURL, "ftp://");
    }

    // need to pull off the '20' in 2009
    String year = "" + calendar.get(Calendar.YEAR);
    year = year.substring(2, 4);
    fileName = fileName + year;

    // the last 3 numbers in the file name are the day of the year, but the files are from "yesterday"
    fileName = fileName + String.format("%03d", calendar.get(Calendar.DAY_OF_YEAR) - 1);
    fileName = fileName + ".csv";

    LOG.info("Getting government file: " + fileName + " for update");

    InputStream inputStream = null;
    FTPClient ftp = new FTPClient();
    try {
        ftp.connect(govURL);
        int reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            LOG.error("FTP connection to server not established.");
            throw new IOException("FTP connection to server not established.");
        }

        boolean isLoggedIn = ftp.login("anonymous", "");
        if (!isLoggedIn) {
            LOG.error("Could not login as anonymous.");
            throw new IOException("Could not login as anonymous.");
        }

        LOG.info("Successfully connected and logged in");
        ftp.enterLocalPassiveMode();
        inputStream = ftp.retrieveFileStream(fileName);
        if (inputStream != null) {
            LOG.info("reading input stream");
            InputStreamReader screenReader = new InputStreamReader(inputStream);
            BufferedReader screen = new BufferedReader(screenReader);

            CSVReader csvReader = new CSVReader(screenReader, ',', '"', 1);
            List<String[]> lines = csvReader.readAll();
            for (String[] line : lines) {
                String title = line[0];
                String number = line[1];

                CFDA cfda = new CFDA();
                cfda.setCfdaNumber(number);
                cfda.setCfdaProgramTitleName(title);

                govMap.put(number, cfda);
            }
        }

        ftp.logout();
        ftp.disconnect();
    }
    finally {
        if (ftp.isConnected()) {
            ftp.disconnect();
        }
    }

    return govMap;
}
 

/**
     * Test CWD for FTP server
     * 
     * @throws Exception
     */
    public void testCWD() throws Exception
    {
        logger.debug("Start testCWD");
        
        FTPClient ftp = connectClient();

        try
        {
            int reply = ftp.getReplyCode();

            if (!FTPReply.isPositiveCompletion(reply))
            {
                fail("FTP server refused connection.");
            }
        
            boolean login = ftp.login(USER_ADMIN, PASSWORD_ADMIN);
            assertTrue("admin login successful", login);
            
            FTPFile[] files = ftp.listFiles();
            reply = ftp.getReplyCode();
            assertTrue(FTPReply.isPositiveCompletion(reply));

            assertTrue(files.length == 1);
            
            boolean foundAlfresco=false;
            for(FTPFile file : files)
            {
                logger.debug("file name=" + file.getName());
                assertTrue(file.isDirectory());
                
                if(file.getName().equalsIgnoreCase("Alfresco"))
                {
                    foundAlfresco=true;
                }
            }
            assertTrue(foundAlfresco);
            
            // Change to Alfresco Dir that we know exists
            reply = ftp.cwd("/Alfresco");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            
            // relative path with space char
            reply = ftp.cwd("Data Dictionary");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            
            // non existant absolute
            reply = ftp.cwd("/Garbage");
            assertTrue(FTPReply.isNegativePermanent(reply));
            
            reply = ftp.cwd("/Alfresco/User Homes");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            
            // Wild card
            reply = ftp.cwd("/Alfresco/User*Homes");
            assertTrue("unable to change to /Alfresco User*Homes/", FTPReply.isPositiveCompletion(reply));
            
//            // Single char pattern match
//            reply = ftp.cwd("/Alfre?co");
//            assertTrue("Unable to match single char /Alfre?co", FTPReply.isPositiveCompletion(reply));
            
            // two level folder
            reply = ftp.cwd("/Alfresco/Data Dictionary");
            assertTrue("unable to change to /Alfresco/Data Dictionary", FTPReply.isPositiveCompletion(reply));
            
            // go up one
            reply = ftp.cwd("..");
            assertTrue("unable to change to ..", FTPReply.isPositiveCompletion(reply));
            
            reply = ftp.pwd();
            ftp.getStatus();
            
            assertTrue("unable to get status", FTPReply.isPositiveCompletion(reply));
            
            // check we are at the correct point in the tree
            reply = ftp.cwd("Data Dictionary");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            

        } 
        finally
        {
            ftp.disconnect();
        }    

    }
 

/**
 * Test CRUD for FTP server
 *
 * @throws Exception
 */
public void testCRUD() throws Exception
{
    final String PATH1 = "FTPServerTest";
    final String PATH2 = "Second part";
    
    logger.debug("Start testFTPCRUD");
    
    FTPClient ftp = connectClient();

    try
    {
        int reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply))
        {
            fail("FTP server refused connection.");
        }
    
        boolean login = ftp.login(USER_ADMIN, PASSWORD_ADMIN);
        assertTrue("admin login successful", login);
                      
        reply = ftp.cwd("/Alfresco/User Homes");
        assertTrue(FTPReply.isPositiveCompletion(reply));
        
        // Delete the root directory in case it was left over from a previous test run
        try
        {
            ftp.removeDirectory(PATH1);
        }
        catch (IOException e)
        {
            // ignore this error
        }
        
        // make root directory
        ftp.makeDirectory(PATH1);
        ftp.cwd(PATH1);
        
        // make sub-directory in new directory
        ftp.makeDirectory(PATH2);
        ftp.cwd(PATH2);
        
        // List the files in the new directory
        FTPFile[] files = ftp.listFiles();
        assertTrue("files not empty", files.length == 0);
        
        // Create a file
        String FILE1_CONTENT_1="test file 1 content";
        String FILE1_NAME = "testFile1.txt";
        ftp.appendFile(FILE1_NAME , new ByteArrayInputStream(FILE1_CONTENT_1.getBytes("UTF-8")));
        
        // Get the new file
        FTPFile[] files2 = ftp.listFiles();
        assertTrue("files not one", files2.length == 1);
        
        InputStream is = ftp.retrieveFileStream(FILE1_NAME);
        
        String content = inputStreamToString(is);
        assertEquals("Content is not as expected", content, FILE1_CONTENT_1);
        ftp.completePendingCommand();
        
        // Update the file contents
        String FILE1_CONTENT_2="That's how it is says Pooh!";
        ftp.storeFile(FILE1_NAME , new ByteArrayInputStream(FILE1_CONTENT_2.getBytes("UTF-8")));
        
        InputStream is2 = ftp.retrieveFileStream(FILE1_NAME);
        
        String content2 = inputStreamToString(is2);
        assertEquals("Content is not as expected", FILE1_CONTENT_2, content2);
        ftp.completePendingCommand();
        
        // now delete the file we have been using.
        assertTrue (ftp.deleteFile(FILE1_NAME));
        
        // negative test - file should have gone now.
        assertFalse (ftp.deleteFile(FILE1_NAME));
        
    } 
    finally
    {
        // clean up tree if left over from previous run

        ftp.disconnect();
    }    
}
 

/**
 * Test of obscure path names in the FTP server
 * 
 * RFC959 states that paths are constructed thus...
 * <string> ::= <char> | <char><string>
 * <pathname> ::= <string>
 * <char> ::= any of the 128 ASCII characters except <CR> and <LF>
 *       
 *  So we need to check how high characters and problematic are encoded     
 */
public void testPathNames() throws Exception
{
    
    logger.debug("Start testPathNames");
    
    FTPClient ftp = connectClient();

    String PATH1="testPathNames";
    
    try
    {
        int reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply))
        {
            fail("FTP server refused connection.");
        }
    
        boolean login = ftp.login(USER_ADMIN, PASSWORD_ADMIN);
        assertTrue("admin login successful", login);
                      
        reply = ftp.cwd("/Alfresco/User*Homes");
        assertTrue(FTPReply.isPositiveCompletion(reply));
                    
        // Delete the root directory in case it was left over from a previous test run
        try
        {
            ftp.removeDirectory(PATH1);
        }
        catch (IOException e)
        {
            // ignore this error
        }
        
        // make root directory for this test
        boolean success = ftp.makeDirectory(PATH1);
        assertTrue("unable to make directory:" + PATH1, success);
        
        success = ftp.changeWorkingDirectory(PATH1);
        assertTrue("unable to change to working directory:" + PATH1, success);
        
        assertTrue("with a space", ftp.makeDirectory("test space"));
        assertTrue("with exclamation", ftp.makeDirectory("space!"));
        assertTrue("with dollar", ftp.makeDirectory("space$"));
        assertTrue("with brackets", ftp.makeDirectory("space()"));
        assertTrue("with hash curley  brackets", ftp.makeDirectory("space{}"));


        //Pound sign U+00A3
        //Yen Sign U+00A5
        //Capital Omega U+03A9

        assertTrue("with pound sign", ftp.makeDirectory("pound \u00A3.world"));
        assertTrue("with yen sign", ftp.makeDirectory("yen \u00A5.world"));
        
        // Test steps that do not work
        // assertTrue("with omega", ftp.makeDirectory("omega \u03A9.world"));
        // assertTrue("with obscure ASCII chars", ftp.makeDirectory("?/.,<>"));    
    } 
    finally
    {
        // clean up tree if left over from previous run

        ftp.disconnect();
    }    


}
 

/** 
 * Description: 向FTP服务器上传文件 
 * @param host FTP服务器hostname 
 * @param port FTP服务器端口 
 * @param username FTP登录账号 
 * @param password FTP登录密码 
 * @param basePath FTP服务器基础目录
 * @param filePath FTP服务器文件存放路径。例如分日期存放：/2015/01/01。文件的路径为basePath+filePath
 * @param filename 上传到FTP服务器上的文件名 
 * @param input 输入流 
 * @return 成功返回true，否则返回false 
 */
public static boolean uploadFile(String host, int port, String username, String password, String basePath, String filePath, String filename,
		InputStream input) {
	boolean result = false;
	FTPClient ftp = new FTPClient();
	try {
		int reply;
		ftp.connect(host, port);// 连接FTP服务器
		// 如果采用默认端口，可以使用ftp.connect(host)的方式直接连接FTP服务器
		ftp.login(username, password);// 登录
		reply = ftp.getReplyCode();
		if (!FTPReply.isPositiveCompletion(reply)) {
			ftp.disconnect();
			return result;
		}
		//切换到上传目录
		if (!ftp.changeWorkingDirectory(basePath + filePath)) {
			//如果目录不存在创建目录
			String[] dirs = filePath.split("/");
			String tempPath = basePath;
			for (String dir : dirs) {
				if (null == dir || "".equals(dir))
					continue;
				tempPath += "/" + dir;
				if (!ftp.changeWorkingDirectory(tempPath)) {
					if (!ftp.makeDirectory(tempPath)) {
						return result;
					} else {
						ftp.changeWorkingDirectory(tempPath);
					}
				}
			}
		}
		//设置上传文件的类型为二进制类型
		ftp.setFileType(FTP.BINARY_FILE_TYPE);
		//上传文件
		if (!ftp.storeFile(filename, input)) {
			return result;
		}
		input.close();
		ftp.logout();
		result = true;
	} catch (IOException e) {
		e.printStackTrace();
	} finally {
		if (ftp.isConnected()) {
			try {
				ftp.disconnect();
			} catch (IOException ioe) {
			}
		}
	}
	return result;
}
 

private RinexNavigationParserGps getFromFTP(String url) throws IOException{
	RinexNavigationParserGps rnp = null;

	String origurl = url;
	if(negativeChache.containsKey(url)){
		if(System.currentTimeMillis()-negativeChache.get(url).getTime() < 60*60*1000){
			throw new FileNotFoundException("cached answer");
		}else{
			negativeChache.remove(url);
		}
	}

	String filename = url.replaceAll("[ ,/:]", "_");
	if(filename.endsWith(".Z")) filename = filename.substring(0, filename.length()-2);
	File rnf = new File(RNP_CACHE,filename);

	if(rnf.exists()){
     System.out.println(url+" from cache file "+rnf);
     rnp = new RinexNavigationParserGps(rnf);
     try{
       rnp.init();
       return rnp;
     }
     catch( Exception e ){
       rnf.delete();
     }
	}
	
	// if the file doesn't exist of is invalid
	System.out.println(url+" from the net.");
	FTPClient ftp = new FTPClient();

	try {
		int reply;
		System.out.println("URL: "+url);
		url = url.substring("ftp://".length());
		String server = url.substring(0, url.indexOf('/'));
		String remoteFile = url.substring(url.indexOf('/'));
		String remotePath = remoteFile.substring(0,remoteFile.lastIndexOf('/'));
		remoteFile = remoteFile.substring(remoteFile.lastIndexOf('/')+1);

		ftp.connect(server);
		ftp.login("anonymous", "[email protected]");

		System.out.print(ftp.getReplyString());

		// After connection attempt, you should check the reply code to
		// verify
		// success.
		reply = ftp.getReplyCode();

		if (!FTPReply.isPositiveCompletion(reply)) {
			ftp.disconnect();
			System.err.println("FTP server refused connection.");
			return null;
		}

		ftp.enterLocalPassiveMode();
		ftp.setRemoteVerificationEnabled(false);

		System.out.println("cwd to "+remotePath+" "+ftp.changeWorkingDirectory(remotePath));
		System.out.println(ftp.getReplyString());
		ftp.setFileType(FTP.BINARY_FILE_TYPE);
		System.out.println(ftp.getReplyString());

		System.out.println("open "+remoteFile);
		InputStream is = ftp.retrieveFileStream(remoteFile);
		System.out.println(ftp.getReplyString());
		if(ftp.getReplyString().startsWith("550")){
			negativeChache.put(origurl, new Date());
			throw new FileNotFoundException();
		}
     InputStream uis = is;

		if(remoteFile.endsWith(".Z")){
			uis = new UncompressInputStream(is);
		}

		rnp = new RinexNavigationParserGps(uis,rnf);
		rnp.init();
		is.close();


		ftp.completePendingCommand();

		ftp.logout();
	} 
	finally {
		if (ftp.isConnected()) {
			try {
				ftp.disconnect();
			} catch (IOException ioe) {
				// do nothing
			}
		}
	}
	return rnp;
}