SFTP客户端连接

来源：互联网发布：标准误的算法编辑：程序博客网时间：2024/06/02 05:03

最近项目使用SFTP很多，在使用过程中遇到很多问题，把自己用到的和同事指导后的代码整理出发，记录一下：

需要引用的jar:

jsch-0.1.53.jar

SFTPClient类：

public class SFTPClient {    private static final Logger logger = Logger.getLogger(SFTPClient.class);    private static int timeoutSecond = 20;    private Session session;    private ChannelSftp channel;    private SFTPClient(Session session, ChannelSftp channel) {        this.session = session;        this.channel = channel;    }    public static final SFTPClient connect(String ip, int port, String userName, String password) throws Exception {        if (StringUtils.isEmpty(ip)||StringUtils.isEmpty(userName)||StringUtils.isEmpty(password)) {throw new Exception("连接SFTP参数异常");}        Session session = null;        Channel channel = null;        try {            JSch jsch = new JSch();            session = jsch.getSession(userName, ip, port);            session.setPassword(password);            Properties sshConfig = new Properties();            sshConfig.put("StrictHostKeyChecking", "no");            session.setConfig(sshConfig);            session.connect();            channel = session.openChannel("sftp");            channel.connect(timeoutSecond * 1000);            logger.info(" Sftp connect success");            return new SFTPClient(session, (ChannelSftp) channel);        } catch (JSchException e) {            logger.error(" Sftp connect error : ", e);            IOUtils.closeQuietly(channel);            IOUtils.closeQuietly(session);            throw new Exception(" Sftp connect error : "+e.getMessage());        }    }    public void close() {    IOUtils.closeQuietly(channel);        IOUtils.closeQuietly(session);    }        }

StringUtils工具类：

public class StringUtils {/** * 判断字符串是否为空，为空返回true */public static boolean isEmpty(String str) {return (str == null || "".equals(str.trim()) || "null".equals(str.trim()));}}

IOUtils工具类：

public class IOUtils extends org.apache.commons.io.IOUtils{    public static void closeQuietly(Session session){    if (session != null) {session.disconnect();}    }        public static void closeQuietly(Channel channel){    if (channel != null) {channel.disconnect();}    }}

SFTP使用过程完要记得关闭相应的会话session和通道channel，避免连接过多导致不能创建新的SFTP连接，代码仅供参考，

有不对的请包涵和指正

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