java实现sftp客户端上传文件以及文件夹的功能

1.依赖的jar文件 jsch-0.1.53.jar

2.登录方式有密码登录,和密匙登录

代码:

主函数:

import java.util.Properties;

import com.cloudpower.util.Login;
import com.util.LoadProperties;

public class Ftp {
    public static void main(String[] args) {
        Properties properties = LoadProperties.getProperties();
        Login.login(properties);
    }
}

登陆页面的代码:

package com.cloudpower.util;

import java.io.Console;
import java.util.Properties;

import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;

public class Login {

    public static void login(Properties properties) {
        String ip = properties.getProperty("ip");
        String user = properties.getProperty("user");
        String pwd = properties.getProperty("pwd");
        String port = properties.getProperty("port");
        String privateKeyPath = properties.getProperty("privateKeyPath");
        String passphrase = properties.getProperty("passphrase");
        String sourcePath = properties.getProperty("sourcePath");
        String destinationPath = properties.getProperty("destinationPath");

        if (ip != null && !ip.equals("") && user != null && !user.equals("")
                && port != null && !port.equals("") && sourcePath != null
                && !sourcePath.equals("") && destinationPath != null
                && !destinationPath.equals("")) {

            if (privateKeyPath != null && !privateKeyPath.equals("")) {
                sshSftp2(ip, user, Integer.parseInt(port), privateKeyPath,
                        passphrase, sourcePath, destinationPath);
            } else if (pwd != null && !pwd.equals("")) {
                sshSftp(ip, user, pwd, Integer.parseInt(port), sourcePath,
                        destinationPath);
            } else {
                Console console = System.console();
                System.out.print("Enter password:");
                char[] readPassword = console.readPassword();
                sshSftp(ip, user, new String(readPassword),
                        Integer.parseInt(port), sourcePath, destinationPath);
            }
        } else {
            System.out.println("请先设置配置文件");
        }
    }

    /**
     * 密码方式登录
     *
     * @param ip
     * @param user
     * @param psw
     * @param port
     * @param sPath
     * @param dPath
     */
    public static void sshSftp(String ip, String user, String psw, int port,
            String sPath, String dPath) {
        System.out.println("password login");
        Session session = null;

        JSch jsch = new JSch();
        try {
            if (port <= 0) {
                // 连接服务器，采用默认端口
                session = jsch.getSession(user, ip);
            } else {
                // 采用指定的端口连接服务器
                session = jsch.getSession(user, ip, port);
            }

            // 如果服务器连接不上，则抛出异常
            if (session == null) {
                throw new Exception("session is null");
            }

            // 设置登陆主机的密码
            session.setPassword(psw);// 设置密码
            // 设置第一次登陆的时候提示，可选值：(ask | yes | no)
            session.setConfig("StrictHostKeyChecking", "no");
            // 设置登陆超时时间
            session.connect(300000);
            UpLoadFile.upLoadFile(session, sPath, dPath);
        } catch (Exception e) {
            e.printStackTrace();
        }

        System.out.println("success");
    }

    /**
     * 密匙方式登录
     *
     * @param ip
     * @param user
     * @param port
     * @param privateKey
     * @param passphrase
     * @param sPath
     * @param dPath
     */
    public static void sshSftp2(String ip, String user, int port,
            String privateKey, String passphrase, String sPath, String dPath) {
        System.out.println("privateKey login");
        Session session = null;
        JSch jsch = new JSch();
        try {
            // 设置密钥和密码
            // 支持密钥的方式登陆，只需在jsch.getSession之前设置一下密钥的相关信息就可以了
            if (privateKey != null && !"".equals(privateKey)) {
                if (passphrase != null && "".equals(passphrase)) {
                    // 设置带口令的密钥
                    jsch.addIdentity(privateKey, passphrase);
                } else {
                    // 设置不带口令的密钥
                    jsch.addIdentity(privateKey);
                }
            }
            if (port <= 0) {
                // 连接服务器，采用默认端口
                session = jsch.getSession(user, ip);
            } else {
                // 采用指定的端口连接服务器
                session = jsch.getSession(user, ip, port);
            }
            // 如果服务器连接不上，则抛出异常
            if (session == null) {
                throw new Exception("session is null");
            }
            // 设置第一次登陆的时候提示，可选值：(ask | yes | no)
            session.setConfig("StrictHostKeyChecking", "no");
            // 设置登陆超时时间
            session.connect(300000);
            UpLoadFile.upLoadFile(session, sPath, dPath);
            System.out.println("success");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

文件上传的代码:

package com.cloudpower.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Scanner;

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;

public class UpLoadFile {
    public static void upLoadFile(Session session, String sPath, String dPath) {

        Channel channel = null;
        try {
            channel = (Channel) session.openChannel("sftp");
            channel.connect(10000000);
            ChannelSftp sftp = (ChannelSftp) channel;
            try {
                sftp.cd(dPath);
                Scanner scanner = new Scanner(System.in);
                System.out.println(dPath + ":此目录已存在,文件可能会被覆盖!是否继续y/n?");
                String next = scanner.next();
                if (!next.toLowerCase().equals("y")) {
                    return;
                }

            } catch (SftpException e) {

                sftp.mkdir(dPath);
                sftp.cd(dPath);

            }
            File file = new File(sPath);
            copyFile(sftp, file, sftp.pwd());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            session.disconnect();
            channel.disconnect();
        }
    }

    public static void copyFile(ChannelSftp sftp, File file, String pwd) {

        if (file.isDirectory()) {
            File[] list = file.listFiles();
            try {
                try {
                    String fileName = file.getName();
                    sftp.cd(pwd);
                    System.out.println("正在创建目录:" + sftp.pwd() + "/" + fileName);
                    sftp.mkdir(fileName);
                    System.out.println("目录创建成功:" + sftp.pwd() + "/" + fileName);
                } catch (Exception e) {
                    // TODO: handle exception
                }
                pwd = pwd + "/" + file.getName();
                try {

                    sftp.cd(file.getName());
                } catch (SftpException e) {
                    // TODO: handle exception
                    e.printStackTrace();
                }
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            for (int i = 0; i < list.length; i++) {
                copyFile(sftp, list[i], pwd);
            }
        } else {

            try {
                sftp.cd(pwd);

            } catch (SftpException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            System.out.println("正在复制文件:" + file.getAbsolutePath());
            InputStream instream = null;
            OutputStream outstream = null;
            try {
                outstream = sftp.put(file.getName());
                instream = new FileInputStream(file);

                byte b[] = new byte[1024];
                int n;
                try {
                    while ((n = instream.read(b)) != -1) {
                        outstream.write(b, 0, n);
                    }
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            } catch (SftpException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } finally {
                try {
                    outstream.flush();
                    outstream.close();
                    instream.close();

                } catch (Exception e2) {
                    // TODO: handle exception
                    e2.printStackTrace();
                }
            }
        }
    }

}

读取配置文件的代码:

package com.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class LoadProperties {
    public static Properties getProperties() {

        File file = new File(Class.class.getClass().getResource("/").getPath()
                + "properties.properties");

        InputStream inputStream = null;

        try {
            inputStream = new FileInputStream(file);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        Properties properties = new Properties();
        try {
            properties.load(inputStream);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return properties;

    }
}

代码目录结构:

测试运行时配置文件放在项目的bin目录下(打包成可运行jar文件的时候要删除,打包完成后将配置文件和jar包放在同级目录下即可):

properties.properties

ip=
user=
pwd=
port=22
privateKeyPath=
passphrase=
sourcePath=
destinationPath=/home/dbbs/f

打包可运行jar文件:

Export->java->Runnabe JAR file

完成后

在控制台运行java -jar  导出jar包的名字.jar 即可