import java.util.Properties;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import com.jcraft.jsch.Channel;import com.jcraft.jsch.ChannelSftp;import com.jcraft.jsch.JSch;import com.jcraft.jsch.Session;/** * @description SFTP工具 * @author Luxh */public class SFTPUtils {        private static final Logger Log = LoggerFactory.getLogger(SFTPUtils.class);        /**FTP协议*/    private static final String FTP_PROTOCOL = "sftp";            /**     * 获取session     * @param host     * @param port     * @param username     * @param password     * @return     */    public static Session getSession(String host, int port, String username, String password) {        Session session = null;        try {            Log.info("init session...");                        JSch jsch = new JSch();            session = jsch.getSession(username, host, port);            session.setPassword(password);            Properties config = new Properties();            config.put("StrictHostKeyChecking", "no");            session.setConfig(config);            session.connect();                        Log.info("init session successful");        }catch(Exception e) {            Log.error("init session failed");                    }        return session;    }        /**     * 获取 ChannelSftp     * @param session     * @return     */    public static ChannelSftp getChannelSftp(Session session){        ChannelSftp sftp = null;        try{            Log.info("init ChannelSftp...");                        Channel channel = session.openChannel(FTP_PROTOCOL);            channel.connect();            sftp = (ChannelSftp) channel;                        Log.info("init ChannelSftp successful");        }catch(Exception e) {            Log.error("init ChannelSftp failed");                    }        return sftp;            }        /**     * 上传     * @param src 源文件路径     * @param dst    目标文件路径     * @param sftp     */    public static void upload(String src, String dst, ChannelSftp sftp) {        try {            Log.info("begin upload...");            Log.info("src file is:{}", src);            Log.info("dst file is:{}", dst);            sftp.put(src, dst);            Log.info("upload successful");        } catch (Exception e) {            Log.error("upload failed");                    }    }        /**     * 下载     * @param src    要下载的文件         * @param dst    存放路径     * @param sftp     */    public static void download(String src, String dst, ChannelSftp sftp) {        try {            Log.info("begin download...");            Log.info("src file is：{} ", src);            Log.info("dst file is：{} ", dst);            sftp.get(src, dst);            Log.info("download successful");        } catch (Exception e) {            Log.error("download failed");                    }    }        /**     * 删除     * @param path    要删除的文件路径     * @param sftp     */    public static void delete(String path, ChannelSftp sftp) {        try {            Log.info("begin delete...");            Log.info("dst file is:  {}", path);            sftp.rm(path);            Log.info("delete successful");        } catch (Exception e) {            Log.error("delete failed");                    }    }        /**     * 关闭连接     * @param session     * @param sftp     */    public static void close(Session session, ChannelSftp sftp){        if(sftp != null) {            sftp.disconnect();            Log.info("ChannelSftp disconnect");        }        if(session != null) {            session.disconnect();            Log.info("Session disconnect");        }    }                                }