Java FTPClient.changeWorkingDirectory方法代碼示例

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
public static byte[] download(String url, int port, String username, String password, String remotePath,
		String fileName) throws IOException {
	FTPClient ftp = new FTPClient();
	ftp.setConnectTimeout(5000);
	ftp.setAutodetectUTF8(true);
	ftp.setCharset(CharsetUtil.UTF_8);
	ftp.setControlEncoding(CharsetUtil.UTF_8.name());
	try {
		ftp.connect(url, port);
		ftp.login(username, password);// 登錄
		if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) {
			ftp.disconnect();
			throw new IOException("login fail!");
		}
		ftp.changeWorkingDirectory(remotePath);
		ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
		FTPFile[] fs = ftp.listFiles();
		for (FTPFile ff : fs) {
			if (ff.getName().equals(fileName)) {
				try (ByteArrayOutputStream is = new ByteArrayOutputStream();) {
					ftp.retrieveFile(ff.getName(), is);
					byte[] result = is.toByteArray();
					return result;
				}
			}
		}

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

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
@Override
public FSDataInputStream open(Path file, int bufferSize) throws IOException {
  FTPClient client = connect();
  Path workDir = new Path(client.printWorkingDirectory());
  Path absolute = makeAbsolute(workDir, file);
  FileStatus fileStat = getFileStatus(client, absolute);
  if (fileStat.isDirectory()) {
    disconnect(client);
    throw new FileNotFoundException("Path " + file + " is a directory.");
  }
  client.allocate(bufferSize);
  Path parent = absolute.getParent();
  // Change to parent directory on the
  // server. Only then can we read the
  // file
  // on the server by opening up an InputStream. As a side effect the working
  // directory on the server is changed to the parent directory of the file.
  // The FTP client connection is closed when close() is called on the
  // FSDataInputStream.
  client.changeWorkingDirectory(parent.toUri().getPath());
  InputStream is = client.retrieveFileStream(file.getName());
  FSDataInputStream fis = new FSDataInputStream(new FTPInputStream(is,
      client, statistics));
  if (!FTPReply.isPositivePreliminary(client.getReplyCode())) {
    // The ftpClient is an inconsistent state. Must close the stream
    // which in turn will logout and disconnect from FTP server
    fis.close();
    throw new IOException("Unable to open file: " + file + ", Aborting");
  }
  return fis;
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
protected void makeRemoteDir(FTPClient ftp, String dir)
        throws IOException {
    String workingDirectory = ftp.printWorkingDirectory();
    if (dir.indexOf("/") == 0) {
        ftp.changeWorkingDirectory("/");
    }
    String subdir;
    StringTokenizer st = new StringTokenizer(dir, "/");
    while (st.hasMoreTokens()) {
        subdir = st.nextToken();
        if (!(ftp.changeWorkingDirectory(subdir))) {
            if (!(ftp.makeDirectory(subdir))) {
                int rc = ftp.getReplyCode();
                if (rc != 550 && rc != 553 && rc != 521) {
                    throw new IOException("could not create directory: " + ftp.getReplyString());
                }
            } else {
                ftp.changeWorkingDirectory(subdir);
            }
        }
    }
    if (workingDirectory != null) {
        ftp.changeWorkingDirectory(workingDirectory);
    }
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * Convenience method, so that we don't open a new connection when using this
 * method from within another method. Otherwise every API invocation incurs
 * the overhead of opening/closing a TCP connection.
 */
private boolean mkdirs(FTPClient client, Path file, FsPermission permission)
    throws IOException {
  boolean created = true;
  Path workDir = new Path(client.printWorkingDirectory());
  Path absolute = makeAbsolute(workDir, file);
  String pathName = absolute.getName();
  if (!exists(client, absolute)) {
    Path parent = absolute.getParent();
    created = (parent == null || mkdirs(client, parent, FsPermission
        .getDirDefault()));
    if (created) {
      String parentDir = parent.toUri().getPath();
      client.changeWorkingDirectory(parentDir);
      created = created && client.makeDirectory(pathName);
    }
  } else if (isFile(client, absolute)) {
    throw new ParentNotDirectoryException(String.format(
        "Can't make directory for path %s since it is a file.", absolute));
  }
  return created;
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * Recursively upload a directory to FTP server with the provided FTP client object.
 *
 * @param sourceDirectoryPath
 * @param targetDirectoryPath
 * @param logPrefix
 * @throws IOException
 */
protected void uploadDirectory(final FTPClient ftpClient, final String sourceDirectoryPath,
                               final String targetDirectoryPath, final String logPrefix) throws IOException {
    log.info(String.format(UPLOAD_DIR, logPrefix, sourceDirectoryPath, targetDirectoryPath));
    final File sourceDirectory = new File(sourceDirectoryPath);
    final File[] files = sourceDirectory.listFiles();
    if (files == null || files.length == 0) {
        log.info(String.format("%sEmpty directory at %s", logPrefix, sourceDirectoryPath));
        return;
    }

    // Make sure target directory exists
    final boolean isTargetDirectoryExist = ftpClient.changeWorkingDirectory(targetDirectoryPath);
    if (!isTargetDirectoryExist) {
        ftpClient.makeDirectory(targetDirectoryPath);
    }

    final String nextLevelPrefix = logPrefix + "..";
    for (File file : files) {
        if (file.isFile()) {
            uploadFile(ftpClient, file.getAbsolutePath(), targetDirectoryPath, nextLevelPrefix);
        } else {
            uploadDirectory(ftpClient, Paths.get(sourceDirectoryPath, file.getName()).toString(),
                    targetDirectoryPath + "/" + file.getName(), nextLevelPrefix);
        }
    }
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * 從遠程服務器目錄下載文件到本地服務器目錄中
 *
 * @param ftp          ftp對象
 * @param localdir     本地文件夾路徑
 * @param remotedir    遠程文件夾路徑
 * @param localTmpFile 本地下載文件名記錄
 * @return
 * @throws IOException
 */
private Collection<String> downloadFolderFiles(FTPClient ftp, final String localdir, final String remotedir, final String localTmpFile) throws IOException {
    //切換到下載目錄的中
    ftp.changeWorkingDirectory(remotedir);
    //獲取目錄中所有的文件信息
    FTPFile[] ftpfiles = ftp.listFiles();
    Collection<String> fileNamesCol = new ArrayList<>();
    //判斷文件目錄是否為空
    if (!ArrayUtils.isEmpty(ftpfiles)) {
        for (FTPFile ftpfile : ftpfiles) {
            String remoteFilePath = ftpfile.getName();
            String localFilePath = localdir + separator + ftpfile.getName();
            //System.out.println("remoteFilePath ="+remoteFilePath +" localFilePath="+localFilePath)
            //單個文件下載狀態
            DownloadStatus downStatus = FtpHelper.getInstance().download(ftp, remoteFilePath, localFilePath);
            if (downStatus == DownloadStatus.Download_New_Success) {
                //臨時目錄中添加記錄信息
                fileNamesCol.add(remoteFilePath);
            }
        }
    }
    if (!fileNamesCol.isEmpty() && !StringUtils.isEmpty(localTmpFile)) {
        FileOperateUtils.writeLinesToFile(fileNamesCol, localTmpFile, false);
    }
    return fileNamesCol;
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
public static List<String> listSequentialDatasets(
    String pdsName, Configuration conf) throws IOException {
  List<String> datasets = new ArrayList<String>();
  FTPClient ftp = null;
  try {
    ftp = getFTPConnection(conf);
    if (ftp != null) {
      ftp.changeWorkingDirectory("'" + pdsName + "'");
      FTPFile[] ftpFiles = ftp.listFiles();
      for (FTPFile f : ftpFiles) {
        if (f.getType() == FTPFile.FILE_TYPE) {
          datasets.add(f.getName());
        }
      }
    }
  } catch(IOException ioe) {
    throw new IOException ("Could not list datasets from " + pdsName + ":"
        + ioe.toString());
  } finally {
    if (ftp != null) {
      closeFTPConnection(ftp);
    }
  }
  return datasets;
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * 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 uploadFileToWebApp(PublishingProfile profile, String fileName, InputStream file) {
    FTPClient ftpClient = new FTPClient();
    String[] ftpUrlSegments = profile.ftpUrl().split("/", 2);
    String server = ftpUrlSegments[0];
    String path = "./site/wwwroot/webapps";
    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();
    }
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
public static boolean downloadFile(String url, int port, String username, String password,
                                   String remotePath, String fileName, String localPath) {
    boolean success = false;
    FTPClient ftp = new FTPClient();
    try {
        int reply;
        ftp.connect(url, port);
        ftp.login(username, password);
        reply = ftp.getReplyCode();
        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.disconnect();
            return success;
        }
        ftp.changeWorkingDirectory(remotePath);
        FTPFile[] fs = ftp.listFiles();
        System.out.println(fs.length);
        for (FTPFile ff : fs) {
            System.out.println(ff.getName());
            if (ff.getName().equals(fileName)) {
                File localFile = new File(localPath + "/" + ff.getName());
                OutputStream is = new FileOutputStream(localFile);
                ftp.retrieveFile(ff.getName(), is);
                is.close();
            }
        }
        ftp.logout();
        success = true;
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (ftp.isConnected()) {
            try {
                ftp.disconnect();
            } catch (IOException ioe) {
            }
        }
    }
    return success;
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * 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();
    }
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * Description: 向FTP服務器上傳文件
 * @param url FTP服務器hostname
 * @param port FTP服務器端口
 * @param username FTP登錄賬號
 * @param password FTP登錄密碼
 * @param path FTP服務器保存目錄
 * @param filename 上傳到FTP服務器上的文件名
 * @param input 輸入流
 * @return 成功返回true，否則返回false
 */
public static boolean uploadFile(String url,int port,String username, String password, String path, String filename, InputStream input) {
	boolean success = false;
	FTPClient ftp = new FTPClient();
	try {
		int reply;
		ftp.connect(url, port);//連接FTP服務器
		//如果采用默認端口，可以使用ftp.connect(url)的方式直接連接FTP服務器
		ftp.login(username, password);//登錄
		reply = ftp.getReplyCode();
		if (!FTPReply.isPositiveCompletion(reply)) {
			ftp.disconnect();
			return success;
		}
		//設置FTP以2進製傳輸
		ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
		//TODO 讀取文件配置判斷是否使用主動
		ftp.enterLocalPassiveMode();//被動
		//ftp.enterLocalActiveMode();//主動
		//創建目錄
		mkDir(path,ftp);
		//改變目錄
		ftp.changeWorkingDirectory(path);
		ftp.storeFile(filename, input);			
		input.close();
		ftp.logout();
		success = true;
	} catch (IOException e) {
		e.printStackTrace();
	} finally {
		if (ftp.isConnected()) {
			try {
				ftp.disconnect();
			} catch (IOException ioe) {
			}
		}
	}
	return success;
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * A stream obtained via this call must be closed before using other APIs of
 * this class or else the invocation will block.
 */
@Override
public FSDataOutputStream create(Path file, FsPermission permission,
    boolean overwrite, int bufferSize, short replication, long blockSize,
    Progressable progress) throws IOException {
  final FTPClient client = connect();
  Path workDir = new Path(client.printWorkingDirectory());
  Path absolute = makeAbsolute(workDir, file);
  FileStatus status;
  try {
    status = getFileStatus(client, file);
  } catch (FileNotFoundException fnfe) {
    status = null;
  }
  if (status != null) {
    if (overwrite && !status.isDirectory()) {
      delete(client, file, false);
    } else {
      disconnect(client);
      throw new FileAlreadyExistsException("File already exists: " + file);
    }
  }
  
  Path parent = absolute.getParent();
  if (parent == null || !mkdirs(client, parent, FsPermission.getDirDefault())) {
    parent = (parent == null) ? new Path("/") : parent;
    disconnect(client);
    throw new IOException("create(): Mkdirs failed to create: " + parent);
  }
  client.allocate(bufferSize);
  // Change to parent directory on the server. Only then can we write to the
  // file on the server by opening up an OutputStream. As a side effect the
  // working directory on the server is changed to the parent directory of the
  // file. The FTP client connection is closed when close() is called on the
  // FSDataOutputStream.
  client.changeWorkingDirectory(parent.toUri().getPath());
  FSDataOutputStream fos = new FSDataOutputStream(client.storeFileStream(file
      .getName()), statistics) {
    @Override
    public void close() throws IOException {
      super.close();
      if (!client.isConnected()) {
        throw new FTPException("Client not connected");
      }
      boolean cmdCompleted = client.completePendingCommand();
      disconnect(client);
      if (!cmdCompleted) {
        throw new FTPException("Could not complete transfer, Reply Code - "
            + client.getReplyCode());
      }
    }
  };
  if (!FTPReply.isPositivePreliminary(client.getReplyCode())) {
    // The ftpClient is an inconsistent state. Must close the stream
    // which in turn will logout and disconnect from FTP server
    fos.close();
    throw new IOException("Unable to create file: " + file + ", Aborting");
  }
  return fos;
}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * 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();
    }    


}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
/**
 * Test a quota failue exception over FTP.
 * A file should not exist after a create and quota exception. 
 */
public void testFtpQuotaAndFtp() throws Exception
{
    // Enable usages
    ContentUsageImpl contentUsage = (ContentUsageImpl)applicationContext.getBean("contentUsageImpl");
    contentUsage.setEnabled(true);
    contentUsage.init();
    UserUsageTrackingComponent userUsageTrackingComponent = (UserUsageTrackingComponent)applicationContext.getBean("userUsageTrackingComponent");
    userUsageTrackingComponent.setEnabled(true);
    userUsageTrackingComponent.bootstrapInternal();
    
    final String TEST_DIR="/Alfresco/User Homes/" + USER_THREE;
 
    FTPClient ftpOne = connectClient();
    try
    {
        int reply = ftpOne.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply))
        {
            fail("FTP server refused connection.");
        }
            
        boolean login = ftpOne.login(USER_THREE, PASSWORD_THREE);
        assertTrue("user three login not successful", login);
                    
        boolean success = ftpOne.changeWorkingDirectory("Alfresco");
        assertTrue("user three unable to cd to Alfreco", success);
        success = ftpOne.changeWorkingDirectory("User*Homes");
        assertTrue("user one unable to cd to User*Homes", success);
        success = ftpOne.changeWorkingDirectory(USER_THREE);
        assertTrue("user one unable to cd to " + USER_THREE, success);
        
        /**
         * Create a file as user three which is bigger than the quota
         */
        String FILE3_CONTENT_3="test file 3 content that needs to be greater than 100 bytes to result in a quota exception being thrown";
        String FILE1_NAME = "test.docx";

        // Should not be success
        success = ftpOne.appendFile(FILE1_NAME , new ByteArrayInputStream(FILE3_CONTENT_3.getBytes("UTF-8")));
        assertFalse("user one can ignore quota", success);
            
        boolean deleted = ftpOne.deleteFile(FILE1_NAME);
        assertFalse("quota exception expected", deleted);
        
        logger.debug("test done");
                 
    } 
    finally
    {
        // Disable usages
        contentUsage.setEnabled(false);
        contentUsage.init();
        userUsageTrackingComponent.setEnabled(false);
        userUsageTrackingComponent.bootstrapInternal();
        
        
        ftpOne.dele(TEST_DIR);
        if(ftpOne != null)
        {
            ftpOne.disconnect();
        }
    }       

}
 

import org.apache.commons.net.ftp.FTPClient; //導入方法依賴的package包/類
private void buildFileTree(TreeItem treeNode, FTPClient client) throws Exception {

        // display the files
        FTPFile[] files = client.listFiles("", FTPFile::isFile);

        for (FTPFile file : files) {

            if(!file.getName().startsWith(".")) {

                System.out.println("File: " + file.getName());

                // add file to file tree
                treeNode.getChildren().add(new TreeItem<>(getFileDisplayText(client, file)));

            } // if

        } // for

        // get the directories
        FTPFile[] directories = client.listDirectories();

        for (FTPFile dir : directories) {

            if(!dir.getName().startsWith(".")) {

                // change working directory to detected directory
                client.changeWorkingDirectory(dir.getName());

                // save working dir
                String pwd = client.printWorkingDirectory();

                // create treeItem to represent new Directory
                TreeItem newDir = new TreeItem<>(dir.getName(), new ImageView(dirIcon));
                newDir.setExpanded(false);

                // add directory to file tree
                treeNode.getChildren().add(newDir);

                Platform.runLater(() -> logTA.appendText("\nDiscovering Files in: " + pwd));
                System.out.println("Discovering Files in: " + pwd);

                // recursively call method to add files and directories to new directory
                buildFileTree(newDir, client);

                // go back to parent directory, once finished in this directory
                client.changeToParentDirectory();

            } // if

        } // for

    }