Java实现Linux上传&下载文件

/**
 *实现服务器连接
 * @param host
 * @param port
 * @param username
 * @param password
 * @param privateKeyFile
 * @return
 * @throws IOException
 */

public static Connection getSSHConnection(String host,int port,String username,String password,String privateKeyFile) throws IOException {
    Connection connection=new Connection(host,port);
    connection.connect();

    File file=new File(privateKeyFile);
    System.out.println(file);
    boolean b=connection.authenticateWithPublicKey(username,file,password);
    System.out.println(b);
    if (b){
        return connection;
    }else {
        System.out.println("登录连接失败，请检查用户名、密码、私钥文件");
        return null;
    }
}

/**
 *实现下载服务器上的文件到本地指定目录
 * @param conn SSH连接信息
 * @param fileName 服务器上的文件地址/opt/rpc/log/order/all.log
 * @param localPath 本地路径：D:
 * @throws IOException
 */

public void getFile(Connection conn, String fileName,String localPath) throws IOException{

    SCPClient scpClient=conn.createSCPClient();
    //String logPath="cd /opt/rpc/log/order";
    //Session session = conn.openSession();
    //session.execCommand(logPath);//执行shell命令
    scpClient.get(fileName,localPath);

}

/**
 *实现上传本地文件到服务器上指定目录
 * @param conn SSH连接信息
 * @param fileName D:a.txt
 * @param localPath 服务器地址路径：/opt/rpc/log/order
 * @throws IOException
 */
public void putFile(Connection conn, String fileName,String localPath) throws IOException{

    SCPClient scpClient=conn.createSCPClient();
    scpClient.put(fileName,localPath);

}