Question

我想获取远程文件的创建日期，但我找不到提供此选项的方法。我只能获得最后修改日期但我想获得此文件的创建日期：

这是我的代码：

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class mytest {


    public static void main(String args[]) throws ParseException {

        //===============================================================
        String hostname = "10.10.11.19";
        String username = "root";
        String password = "passwword";
        String remoteFile = "/opt/test_pyt/teeeeeeest.txt"
        String copyTo = "/home/desk/Desktop";
        JSch jsch = new JSch();
        Session session = null;
        System.out.println("Trying to connect.....");
        try {
            session = jsch.getSession(username, hostname, 22);
            session.setConfig("StrictHostKeyChecking", "no");
            session.setPassword(password);
            session.connect();
            Channel channel = session.openChannel("sftp");
            channel.connect();
            ChannelSftp sftpChannel = (ChannelSftp) channel;
            //get date of file=========================================   
            String lastModif = sftpChannel.lstat(remoteFile).getMtimeString();

            //I want to get creation date =============================
            creation_date= ???????????;

          //==============================================
                sftpChannel.get(remoteFile, copyTo);
                sftpChannel.exit();
                session.disconnect();


        } catch (JSchException e) {
        } catch (SftpException e) {
        }

    }
}

谢谢

Answer 1

SFTP standard不包括获取文件创建日期的方法。对不起，你运气不好。

Answer 2

是的，您可以使用jsch：

执行此操作

Vector vec = channel.ls("File Name");
// Assumption only no duplicate file names on server
if (vec != null && vec.size() == 1) {
        LsEntry details = (LsEntry) vec.get(0);
        SftpATTRS attrs = details.getAttrs();

        int t = attrs.getMTime();
        java.utl.Date modTime = new Date(t * 1000L);

}

Answer 3

通过sshChannel运行linux命令terraform plan -out samplefile.txt解决了此问题。

首先是运行命令并返回系统输出的通用方法：

stat --printf="%y\n" ${file}

然后：

String runCommand(String command) { Session session = connect(details); // change to your connection here ChannelExec execChannel = null; try { execChannel = (ChannelExec) session.openChannel("exec"); execChannel.setCommand(command); InputStreamReader stream = new InputStreamReader( execChannel.getInputStream() ); execChannel.setErrStream( System.err, true ); execChannel.connect(); StringBuilder output = new StringBuilder(); char[] buffer = new char[128]; int read; while ( ( read = stream.read( buffer, 0, buffer.length ) ) >= 0 ) { output.append( buffer, 0, read ); } stream.close(); new Await() .waitUntil(execChannel, Channel::isClosed, 10000); //it's my implementation; you can just wait in loop until it's closed execChannel.disconnect(); return output.toString(); } catch (JSchException | IOException e) { handleException(e); return "Command execution failed"; } finally { cleanup(execChannel, session); } }

它将返回以下格式的字符串：

2020-11-11 14：32：36.936232330 +0530

因此将其解析为某种数据类型非常容易。

JAVA：通过sftp获取远程文件的创建日期

3 个答案: