java利用jcraft实现和远程服务器交互，实现上传下载文件

git地址：https://github.com/fusugongzi/upLoadAndDownloadFile

第一步：引入maven支持，添加maven依赖

    com.jcraft
    jsch
    0.1.54

第二步：写一个类sshconfiguration，作用是存储要登录机器的host,port,username.pwd

public class SshConfiguration {
    private String host;
    private int    port;
    private String userName;
    private String password;

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public SshConfiguration(String host, int port, String userName, String password) {
        this.host = host;
        this.port = port;
        this.userName = userName;
        this.password = password;
    }

    public SshConfiguration(){}
}

第三步：写一个类sshutil，实现上传下载

public class SshUtil {
    private ChannelSftp channelSftp;
    private ChannelExec channelExec;
    private Session session=null;
    private int timeout=60000;

    public SshUtil(SshConfiguration conf) throws JSchException {
        System.out.println("try connect to  "+conf.getHost()+",username: "+conf.getUserName()+",password: "+conf.getPassword()+",port: "+conf.getPort());
        JSch jSch=new JSch(); //创建JSch对象
        session=jSch.getSession(conf.getUserName(), conf.getHost(), conf.getPort());//根据用户名，主机ip和端口获取一个Session对象
        session.setPassword(conf.getPassword()); //设置密码
        Properties config=new Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);//为Session对象设置properties
        session.setTimeout(timeout);//设置超时
        session.connect();//通过Session建立连接
    }
    public void download(String src,String dst) throws JSchException, SftpException{
        //src linux服务器文件地址，dst 本地存放地址
        channelSftp=(ChannelSftp) session.openChannel("sftp");
        channelSftp.connect();
        channelSftp.get(src, dst);
        channelSftp.quit();
    }
    public void upLoad(String src,String dst) throws JSchException,SftpException{
        //src 本机文件地址。 dst 远程文件地址
        channelSftp=(ChannelSftp) session.openChannel("sftp");
        channelSftp.connect();
        channelSftp.put(src, dst);
        channelSftp.quit();
    }
    public void close(){
        session.disconnect();
    }
    public static void main(String[] args){
        SshConfiguration configuration=new SshConfiguration();
        configuration.setHost("172.17.1.232");
        configuration.setUserName("root");
        configuration.setPassword("root275858");
        configuration.setPort(22);
        try{
//            SshUtil sshUtil=new SshUtil(configuration);
//            sshUtil.download("/home/cafintech/Logs/metaData/meta.log","D://meta.log");
//            sshUtil.close();
//            System.out.println("文件下载完成");
            SshUtil sshUtil=new SshUtil(configuration);
            sshUtil.upLoad("D://meta.log","/home/cafintech/");
            sshUtil.close();
            System.out.println("文件上传完成");
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

github地址：https://github.com/fusugongzi/upLoadAndDownloadFile