java实现sftp客户端上传文件以及文件夹的功能代码

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

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