Example usage for org.apache.commons.net.io CopyStreamException printStackTrace

Introduction

In this page you can find the example usage for org.apache.commons.net.io CopyStreamException printStackTrace.

Prototype

public void printStackTrace() 

Source Link

Document

Prints this throwable and its backtrace to the standard error stream.

Usage

From source file:edu.cmu.cs.in.hoop.hoops.load.HoopFTPReader.java

/**
 * /*ww  w  .j a v  a  2  s . c om*/
 */
private String retrieveFTP(String aURL) {
    debug("retrieveFTP (" + aURL + ")");

    URL urlObject = null;

    try {
        urlObject = new URL(aURL);
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    String downloadPath = this.projectToFullPath("<PROJECTPATH>/tmp/download/");
    HoopLink.fManager.createDirectory(downloadPath);

    File translator = new File(urlObject.getFile());

    String localFileName = "<PROJECTPATH>/tmp/download/" + translator.getName();

    OutputStream fileStream = null;

    if (HoopLink.fManager.openStreamBinary(this.projectToFullPath(localFileName)) == false) {
        this.setErrorString("Error opening temporary output file");
        return (null);
    }

    fileStream = HoopLink.fManager.getOutputStreamBinary();

    if (fileStream == null) {
        this.setErrorString("Error opening temporary output file");
        return (null);
    }

    debug("Starting FTP client ...");

    FTPClient ftp = new FTPClient();

    try {
        int reply;

        debug("Connecting ...");

        ftp.connect(urlObject.getHost());

        debug("Connected to " + urlObject.getHost() + ".");
        debug(ftp.getReplyString());

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

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.disconnect();
            debug("FTP server refused connection.");
            return (null);
        } else {
            ftp.login("anonymous", "hoop-dev@gmail.com");

            reply = ftp.getReplyCode();

            if (!FTPReply.isPositiveCompletion(reply)) {
                ftp.disconnect();
                debug("Unable to login to FTP server");
                return (null);
            }

            debug("Logged in");

            boolean rep = true;

            String pathFixed = translator.getParent().replace("\\", "/");

            rep = ftp.changeWorkingDirectory(pathFixed);
            if (rep == false) {
                debug("Unable to change working directory to: " + pathFixed);
                return (null);
            } else {
                debug("Current working directory: " + pathFixed);

                debug("Retrieving file " + urlObject.getFile() + " ...");

                try {
                    rep = ftp.retrieveFile(urlObject.getFile(), fileStream);
                } catch (FTPConnectionClosedException connEx) {
                    debug("Caught: FTPConnectionClosedException");
                    connEx.printStackTrace();
                    return (null);
                } catch (CopyStreamException strEx) {
                    debug("Caught: CopyStreamException");
                    strEx.printStackTrace();
                    return (null);
                } catch (IOException ioEx) {
                    debug("Caught: IOException");
                    ioEx.printStackTrace();
                    return (null);
                }

                debug("File retrieved");
            }

            ftp.logout();
        }
    } catch (IOException e) {
        debug("Error retrieving FTP file");
        e.printStackTrace();
        return (null);
    } finally {
        if (ftp.isConnected()) {
            debug("Closing ftp connection ...");

            try {
                ftp.disconnect();
            } catch (IOException ioe) {
                debug("Exception closing ftp connection");
            }
        }
    }

    debug("Closing local file stream ...");

    try {
        fileStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

    String result = HoopLink.fManager.loadContents(this.projectToFullPath(localFileName));

    return (result);
}

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