连接远程服务器并获取文件

pom文件：

  <dependency>
            <groupId>ch.ethz.ganymed</groupId>
            <artifactId>ganymed-ssh2</artifactId>
            <version>261</version>
        </dependency>

连接远程服务器：

package com.heiheihaxi.jszxdemo2.utils;

import ch.ethz.ssh2.Connection;

public class SCPClientUtil {

    private static Connection conn=null;

    public static Connection getConnection(){
        String hostname="xxx.xxx.xxx.xxx";// ip地址
        String username="xxxx";// 用户名
        String password="xxxx";// 密码
        int port=22;// 端口
        conn = new Connection(hostname, port);
        try {
            // 连接到主机
            conn.connect();
            // 使用用户名和密码校验
            boolean isconn = conn.authenticateWithPassword(username, password);
            if (!isconn) {
                System.out.println("用户名称或者是密码不正确");
                return null;
            } else {
                System.out.println("远程服务器连接成功.");
                return conn;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

根据现在文件名获取最新的文件

public void getFiles(Connection connection, String fileName) throws IOException {
        if (connection != null) {
            Session ss = null;
            List<String> lists=new ArrayList<>();
            try {
                SCPClient scpClient = connection.createSCPClient();
                Session session = connection.openSession();
                session.execCommand("ls /home/test/file_*");  //进入目录
                //显示执行命令后的信息
                System.out.println("连接远程服务器成功");
                InputStream stdout = new StreamGobbler(session.getStdout());
                BufferedReader br = new BufferedReader(new InputStreamReader(stdout));
                while (true) {
                    String line = br.readLine();
                    if (line == null){
                        break;
                    }
                    if(line.compareTo(fileName)>0){//说明有新文件
                        SCPInputStream scpInputStream = scpClient.get(line);
						// 下载文件
                        downLoadFileIO(scpInputStream,line);
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                // 连接的Session和Connection对象都需要关闭
                if(ss!=null){
                    ss.close();
                }
                connection.close();
            }
        }
    }

    private void downLoadFileIO(SCPInputStream scpInputStream,String line) throws IOException {
        // IO流下载文件
        BufferedInputStream bis=new BufferedInputStream(scpInputStream);
        BufferedOutputStream bos=new BufferedOutputStream(new FileOutputStream("E:\\"+line+".txt"));

        byte [] bytes=new byte[1024];
        int len;
        while ((len=bis.read(bytes))>0){
            bos.write(bytes,0,len);
        }
        bis.close();
        bos.close();
    }