java-classic-code/java-sftp-ftp/JschSftpClientHandler.java

package com.primeton.damp.fileclient;

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.Properties;

/**
 * <pre>
 *
 * Created by zhaopx.
 * User: zhaopx
 * Date: 2021/3/31
 * Time: 10:54
 *
 * </pre>
 *
 * @author zhaopx
 */
public class JschSftpClientHandler implements X11ClientHandler {


    protected static Logger log = LoggerFactory.getLogger("JschSftpClientHandler");


    private final String sftpHost;
    private int sftpPort = 22;
    private final String ftpUsername;
    private String ftpPassword;
    private String privateKey = "/Users/zhenqin/.ssh/id_rsa";


    private  ChannelSftp channelSftp;

    public JschSftpClientHandler(String sftpHost, int sftpPort, String ftpUsername, String ftpPassword) {
        this.sftpHost = sftpHost;
        this.sftpPort = sftpPort;
        this.ftpUsername = ftpUsername;
        this.ftpPassword = ftpPassword;
    }

    @Override
    public void reconnect(Properties params) throws IOException {
        JSch jsch = new JSch();
        try {
            /*
            if (Files.exists(Paths.get(privateKey))) {
                jsch.addIdentity(privateKey, "123456");
                if (StringUtils.isNotBlank(ftpPassword)) {
                    jsch.addIdentity(privateKey, ftpPassword);
                } else {

                }
            }
                */
            Session session = jsch.getSession(ftpUsername, sftpHost, sftpPort);
            session.setPassword(ftpPassword);
            session.setConfig("StrictHostKeyChecking", "no");
            session.connect(CONNECT_TIMEOUT);
            // 创建sftp通信通道
            Channel channel = session.openChannel("sftp");
            channel.connect(CONNECT_TIMEOUT);
            log.info("Channel created to " + sftpHost + ".");
            channelSftp = (ChannelSftp) channel;
        }  catch (Exception e) {
            if(e instanceof IOException) {
                throw (IOException)e;
            }
            throw new IOException(e);
        }
    }

    @Override
    public OutputStream writeFile(String file, boolean overwrite) throws IOException {
        return null;
    }

    @Override
    public InputStream readFile(String file) throws IOException {
        return null;
    }

    @Override
    public boolean rename(String file, String newFileName) {
        return false;
    }

    @Override
    public boolean deleteFile(String path) {
        return false;
    }

    @Override
    public boolean mkdir(String path) {
        return false;
    }

    @Override
    public boolean mkdirs(String path) {
        return false;
    }

    @Override
    public List<Path> getChildren(String ftpPath) {
        return null;
    }

    @Override
    public boolean exists(String path) {
        return false;
    }

    @Override
    public boolean existsDir(String path) {
        return false;
    }

    @Override
    public boolean existsFile(String path) {
        return false;
    }

    @Override
    public void close() throws IOException {
        if(channelSftp != null) {
            channelSftp.disconnect();
        }
    }


    public static void main(String[] args) throws IOException {
        Properties map = new Properties();
        String host = "192.168.30.143";
        int port = 22;
        String username = "root";
        String password = "admin-123456";

        try(JschSftpClientHandler handler = new JschSftpClientHandler(host, port, username, password)) {
            handler.reconnect(map);
            List<Path> result = handler.getChildren("/root/software/damp");
            for (Path path : result) {
                System.out.println(path.toString());
            }

        }
    }
}