import?java.io.File;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.net.SocketException;
import?java.util.ArrayList;
import?java.util.List;

import?org.apache.commons.net.ftp.FTP;
import?org.apache.commons.net.ftp.FTPClient;
import?org.apache.commons.net.ftp.FTPReply;
import?org.apache.commons.net.nntp.NewGroupsOrNewsQuery;
import?org.apache.log4j.Logger;

/**
?*?采用的是apache?commons-net架包中的ftp工具類實(shí)現(xiàn)的
?*?
?*?@author?shi
?*?
?*/
public?class?FtpTools?{
	private?String?username;
	private?String?password;
	private?String?ftpHostName;
	private?int?port?=?21;
	private?FTPClient?ftpClient?=?new?FTPClient（）;
	private?FileOutputStream?fos?=?null;
	public?List?list?=?new?ArrayList（）;
	private?Logger?logger?=?Logger.getLogger（FtpTools.class）;

	public?FtpTools（String?username?String?password?String?ftpHostName?int?port）?{
		super（）;
		this.username?=?username;
		this.password?=?password;
		this.ftpHostName?=?ftpHostName;
		this.port?=?port;
	}

	/**
	?*?建立連接b
	?*/
	private?void?connect（）?{
		try?{
			logger.debug（“開始連接“）;
			//?連接
			ftpClient.connect（ftpHostName?port）;
			int?reply?=?ftpClient.getReplyCode（）;
			if?（!FTPReply.isPositiveCompletion（reply））?{
				ftpClient.disconnect（）;
			}
			//?登錄
			ftpClient.login（username?password）;
			ftpClient.setBufferSize（256）;

			ftpClient.setFileType（FTP.BINARY_FILE_TYPE）;

			ftpClient.setControlEncoding（“utf8“）;
			logger.debug（“登錄成功！“）;
			logger.debug（“開始登錄！“）;
		}?catch?（SocketException?e）?{
			logger.error（““?e）;
		}?catch?（IOException?e）?{
			logger.error（““?e）;
		}

	}

	/**
	?*?關(guān)閉輸入輸出流
	?*?
	?*?@param?fos
	?*/
	private?void?close（FileOutputStream?fos）?{
		try?{
			if?（fos?!=?null）?{
				fos.close（）;
			}

			ftpClient.logout（）;
			logger.info（“退出登錄“）;
			ftpClient.disconnect（）;
			logger.info（“關(guān)閉連接“）;
		}?catch?（IOException?e）?{
			logger.error（““?e）;
		}
	}

	/**
	?*?下載文件
	?*?
	?*?@param?ftpFileName
	?*?@param?localDir
	?*/
	public?void?down（String?ftpFileName?String?localDir）?{
		connect（）;
		downFileOrDir（ftpFileName?localDir）;
		close（fos）;
	}

	private?void?downFileOrDir（String?ftpFileName?String?localDir）?{
		try?{
			File?file?=?new?File（ftpFileName）;

			File?temp?=?new?File（localDir）;

			if?（!temp.exists（））?{
				temp.mkdirs（）;
			}
			//?判斷是否是目錄
			if?（isDir（ftpFileName））?{
				String[]?names?=?ftpClient.listNames（）;
				for?（int?i?=?0;?i?					System.out.println（“---------------“+names[i]?+?“-------------------“）;
					list.add（names[i]）;
					if?（isDir（names[i]））?{
						downFileOrDir（ftpFileName?+?‘/‘?+?names[i]?localDir?+?File.separator?+?names[i]）;
						ftpClient.changeToParentDirectory（）;
					}?else?{
						File?localfile?=?new?File（localDir?+?File.separator?+?names[i]）;
						if?（!localfile.exists（））?{
							fos?=?new?FileOutputStream（localfile）;
							ftpClient.retrieveFile（names[i]?fos）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-12-13?16:59??Ftp\
?????文件?????????613??2018-12-13?00:27??Ftp\.classpath
?????文件?????????379??2018-12-13?00:22??Ftp\.project
?????目錄???????????0??2018-12-13?16:59??Ftp\.settings\
?????文件?????????598??2018-12-13?00:22??Ftp\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2018-12-13?16:59??Ftp\bin\
?????文件????????5493??2018-12-13?16:58??Ftp\bin\FtpTools.class
?????文件????????1805??2018-01-09?10:11??Ftp\bin\log4j.properties
?????文件????????1959??2018-12-13?16:58??Ftp\bin\TestFileUtil.class
?????文件????????4472??2018-12-13?16:41??Ftp\bin\Ziputil.class
?????文件????????4327??2018-12-13?16:20??Ftp\bin\Ziputil2.class
?????目錄???????????0??2018-12-13?16:59??Ftp\lib\
?????文件?????1323005??2018-12-13?00:23??Ftp\lib\ant.jar
?????文件??????307410??2018-12-13?00:23??Ftp\lib\commons-net-3.6.jar
?????文件??????481535??2018-01-08?18:57??Ftp\lib\log4j-1.2.16.jar
?????文件?????2036195??2018-12-13?00:23??Ftp\lib\org.apache.tools.ant-1.9.7.jar
?????文件???????43926??2018-12-13?00:23??Ftp\lib\slf4j-api-1.8.0-beta0.jar
?????文件????????2957??2018-12-13?15:49??Ftp\log.log
?????目錄???????????0??2018-12-13?16:59??Ftp\src\
?????文件????????4816??2018-12-13?16:58??Ftp\src\FtpTools.java
?????文件????????1805??2018-01-09?10:11??Ftp\src\log4j.properties
?????文件?????????845??2018-12-13?16:58??Ftp\src\TestFileUtil.java
?????文件????????4338??2018-12-13?16:41??Ftp\src\Ziputil.java
?????文件????????3243??2018-12-13?16:20??Ftp\src\Ziputil2.java