edu.stanford.epad.common.util.FTPUtil.java Source code

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 * Copyright (c) 2015 The Board of Trustees of the Leland Stanford Junior University
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package edu.stanford.epad.common.util;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.io.IOUtils;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;

public class FTPUtil {

    private String ftpHost;
    private String ftpUser;
    private String ftpPassword;
    private String ftpFolder;
    private int ftpPort = 21;

    public FTPUtil(String ftpHost, String ftpUser, String ftpPassword) {
        super();
        this.ftpHost = ftpHost;
        this.ftpUser = ftpUser;
        this.ftpPassword = ftpPassword;
    }

    public FTPUtil(String ftpHost, String ftpUser, String ftpPassword, int ftpPort) {
        super();
        this.ftpHost = ftpHost;
        this.ftpUser = ftpUser;
        this.ftpPassword = ftpPassword;
        this.ftpPort = ftpPort;
    }

    public void getFile(String remoteFile, File localFile) throws Exception {

        FTPClient ftpClient = new FTPClient();
        OutputStream outputStream = null;
        try {
            ftpClient.connect(ftpHost, ftpPort);
            ftpClient.enterLocalPassiveMode();
            if (ftpUser != null && ftpUser.length() > 0)
                ftpClient.login(ftpUser, ftpPassword);
            else
                ftpClient.login("anonymous", "");
            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);

            outputStream = new BufferedOutputStream(new FileOutputStream(localFile));
            InputStream inputStream = ftpClient.retrieveFileStream(remoteFile);
            IOUtils.copy(inputStream, outputStream);
            outputStream.flush();
            IOUtils.closeQuietly(outputStream);
            IOUtils.closeQuietly(inputStream);
            boolean commandOK = ftpClient.completePendingCommand();
            //boolean success = ftpClient.retrieveFile(remoteFile, outputStream);

            //if (!success) {
            //   throw new Exception("Error retrieving remote file: " + remoteFile);
            //}   
        } finally {
            outputStream.close();
            ftpClient.disconnect();
        }
    }

    public boolean sendFile(String filePath, boolean delete) throws Exception {

        String fileName = filePath;
        int slash = fileName.lastIndexOf("/");
        if (slash != -1)
            fileName = fileName.substring(slash + 1);
        slash = fileName.lastIndexOf("\\");
        if (slash != -1)
            fileName = fileName.substring(slash + 1);
        boolean success = true;
        FTPClient ftp = new FTPClient();
        try {
            ftp.connect(ftpHost, ftpPort);
            int reply = ftp.getReplyCode();
            if (FTPReply.isPositiveCompletion(reply)) {
                if (ftp.login(ftpUser, ftpPassword)) {
                    if (ftpFolder != null && ftpFolder.trim().length() > 0) {
                        ftp.cwd(ftpFolder);
                        System.out.print("ftp cd: " + ftp.getReplyString());
                    }
                    ftp.setFileType(FTP.ASCII_FILE_TYPE);
                    FileInputStream in = new FileInputStream(filePath);
                    success = ftp.storeFile(fileName, in);
                    in.close();
                    if (delete) {
                        File file = new File(filePath);
                        file.delete();
                    }
                } else
                    success = false;
            }
        } finally {
            ftp.disconnect();
        }

        return success;
    }

}