JAVA FTP 下载文件

public static boolean download()throws IOException{
		boolean result = false;
		String downLocalPath ="d://";//下载到本地目录
		String ftpPath = "/";//ftp目录
		FTPClient ftp = new FTPClient();
		ftp.connect("192.168.7.88",21);//指定ftp IP和端口
		ftp.login("administrator", "1");//用户名和密码
		ftp.setControlEncoding("GBK");//解决中文乱码时使用
		int reply=ftp.getReplyCode();
		if (!FTPReply.isPositiveCompletion(reply)) {//是否连接
			 ftp.disconnect();
			 return result;
		}
		boolean changedir = ftp.changeWorkingDirectory(ftpPath);//指定ftp目录
		if(changedir){
			FTPFile[] files = ftp.listFiles();//加载文件
			OutputStream outputStream =null;
			for (int i = 0; i < files.length; i++) {
				  outputStream = new FileOutputStream(downLocalPath+ files[i].getName()); 
				  ftp.retrieveFile(new String(files[i].getName().getBytes("GBK"),"iso-8859-1"), outputStream);
				  outputStream.flush();
				  outputStream.close();
			}
		}
		if(changedir){
			ftp.changeToParentDirectory();
		}
		if(ftp.isConnected()){
			ftp.logout();
			ftp.disconnect();
		}
		result = true;
		return result;
	}