android 使用ftp上传下载（使用ftp4j）弹出框（进度条）

/* * ftp4j - A pure Java FTP client library * * Copyright (C) 2008-2010 Carlo Pelliccia (www.sauronsoftware.it) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License version * 2.1, as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License 2.1 for more details. * * You should have received a copy of the GNU Lesser General Public * License version 2.1 along with this program. * If not, see <http://www.gnu.org/licenses/>. */ package it.sauronsoftware.ftp4j; import it.sauronsoftware.ftp4j.connectors.DirectConnector; import it.sauronsoftware.ftp4j.extrecognizers.DefaultTextualExtensionRecognizer; import it.sauronsoftware.ftp4j.extrecognizers.ParametricTextualExtensionRecognizer; import it.sauronsoftware.ftp4j.listparsers.DOSListParser; import it.sauronsoftware.ftp4j.listparsers.EPLFListParser; import it.sauronsoftware.ftp4j.listparsers.MLSDListParser; import it.sauronsoftware.ftp4j.listparsers.NetWareListParser; import it.sauronsoftware.ftp4j.listparsers.UnixListParser; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.Reader; import java.io.Writer; import java.net.InetAddress; import java.net.Socket; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.Iterator; import java.util.StringTokenizer; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.zip.DeflaterOutputStream; import java.util.zip.InflaterInputStream; import javax.net.ssl.SSLSocketFactory; /** * This class implements a FTP client. * * You can use an instance of this class to connect to a remote FTP site and do * FTP operations like directory listing, file upload and download, resume a * broken upload/download and so on. * * The common flow is: create the object, connect to a remote FTP site with the * connect() method, authenticate with login(), do anything you need with the * contents of the remote site, quit the site with disconnect(). * * A FTPClient object can handle a connection per time. Once you have used and * disconnected a FTPClient object you can use it again to connect another FTP * server. * * @author Carlo Pelliccia * @version 1.5 */ public class FTPClient { /** * The constant for the FTP security level. * * @since 1.4 */ public static final int SECURITY_FTP = 0; /** * The constant for the FTPS (FTP over implicit TLS/SSL) security level. * * @since 1.4 */ public static final int SECURITY_FTPS = 1; /** * The constant for the FTPES (FTP over explicit TLS/SSL) security level. * * @since 1.4 */ public static final int SECURITY_FTPES = 2; /** * The constant for the AUTO file transfer type. It lets the client pick * between textual and binary types, depending on the extension of the file * exchanged through a textual extension recognizer. */ public static final int TYPE_AUTO = 0; /** * The constant for the TEXTUAL file transfer type. It means that the data * sent or received is treated as textual information. This implies charset * conversion during the transfer. */ public static final int TYPE_TEXTUAL = 1; /** * The constant for the BINARY file transfer type. It means that the data * sent or received is treated as a binary stream. The data is taken "as * is", without any charset conversion. */ public static final int TYPE_BINARY = 2; /** * The constant for the MLSD policy that causes the client to use the MLSD * command instead of LIST, but only if the MLSD command is explicitly * supported by the server (the support is tested with the FEAT command). * * @since 1.5 */ public static final int MLSD_IF_SUPPORTED = 0; /** * The constant for the MLSD policy that causes the client to use always the * MLSD command instead of LIST, also if the MLSD command is not explicitly * supported by the server (the support is tested with the FEAT command). * * @since 1.5 */ public static final int MLSD_ALWAYS = 1; /** * The constant for the MLSD policy that causes the client to use always the * LIST command, also if the MLSD command is explicitly supported by the * server (the support is tested with the FEAT command). * * @since 1.5 */ public static final int MLSD_NEVER = 2; /** * The size of the buffer used when sending or receiving data. * * @since 1.6 */ private static final int SEND_AND_RECEIVE_BUFFER_SIZE = 64 * 1024; /** * The DateFormat object used to parse the reply to a MDTM command. */ private static final DateFormat MDTM_DATE_FORMAT = new SimpleDateFormat( "yyyyMMddHHmmss"); /** * The RegExp Pattern object used to parse the reply to a PASV command. */ private static final Pattern PASV_PATTERN = Pattern .compile("\\d{1,3},\\d{1,3},\\d{1,3},\\d{1,3},\\d{1,3},\\d{1,3}"); /** * The RegExp Pattern object used to parse the reply to a PWD command. */ private static final Pattern PWD_PATTERN = Pattern.compile("\"/.*\""); /** * The connector used to connect the remote host. */ private FTPConnector connector = new DirectConnector(); /** * The SSL socket factory used to negotiate SSL connections. */ private SSLSocketFactory sslSocketFactory = (SSLSocketFactory) SSLSocketFactory .getDefault(); /** * The FTPCommunicationListener objects registered on the client. */ private ArrayList communicationListeners = new ArrayList(); /** * The FTPListParser objects registered on the client. */ private ArrayList listParsers = new ArrayList(); /** * The textual extension recognizer used by the client. */ private FTPTextualExtensionRecognizer textualExtensionRecognizer = DefaultTextualExtensionRecognizer.getInstance(); /** * The FTPListParser used successfully during previous connection-scope list * operations. */ private FTPListParser parser = null; /** * If the client is connected, it reports the remote host name or address. */ private String host = null; /** * If the client is connected, it reports the remote port number. */ private int port = 0; /** * The security level. The value should be one of SECURITY_FTP, * SECURITY_FTPS and SECURITY_FTPES constants. Default value is * SECURITY_FTP. */ private int security = SECURITY_FTP; /** * If the client is authenticated, it reports the authentication username. */ private String username; /** * If the client is authenticated, it reports the authentication password. */ private String password; /** * The flag reporting the connection status. */ private boolean connected = false; /** * The flag reporting the authentication status. */ private boolean authenticated = false; /** * The flag for the passive FTP data transfer mode. Default value is true, * cause it's usually the preferred FTP operating mode. */ private boolean passive = true; /** * The type of the data transfer contents (auto, textual, binary). The value * should be one of {@link FTPClient#TYPE_AUTO}, * {@link FTPClient#TYPE_TEXTUAL} and {@link FTPClient#TYPE_BINARY} * constants. Default value is TYPE_AUTO. */ private int type = TYPE_AUTO; /** * The MLSD command policy.