Solve the problem of uploading sftporg apache. commons. net. MalformedServerReplyException: Could not parse respon

Solve last time SFTP Report errors :org.apache.commons.net.MalformedServerReplyException: Could not parse respon; Server Reply: SSH-2.0-OpenSSH_5.3

reason : When using org.apache.commons.net.ftp.FTPClient By agreement SSH2 Conduct SFTP Connection error , The reason is that it does not support this kind of connection

terms of settlement

Use                 com.jcraft

<dependency>
    <groupId>com.jcraft</groupId>
    <artifactId>jsch</artifactId>
    <version>0.1.49</version>
</dependency>

import com.jcraft.jsch.*;

import java.io.*;
import java.util.Properties;

public class FileUtil {
    // user name 
    private String username;
     // password 
    private String password;
     //ip
    private String host;
     // The port is generally 22
    private int port;
    // Private key 
    private String privateKey;
    
    ChannelSftp sftp = null;
   // Pass parameters through the construction method 
   public FileUtil(String username, String password, String host, int port){
       this.username = username;
       this.password = password;
       this.host = host;
       this.port = port;
   }
    public FileUtil(String username, String host, int port, String privateKey){
        this.username = username;
        this.host = host;
        this.port = port;
        this.privateKey = privateKey;
    }
   // Sign in , Check the links 
    public void login(){
        try {
            JSch jSch = new JSch();
            if(privateKey != null){
                jSch.addIdentity(privateKey);
            }
            Session session = jSch.getSession(username,host,port);
            if(password != null){
                session.setPassword(password);
            }
            session.setTimeout(100000);

            Properties config = new Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            Channel channel = session.openChannel("sftp");
            channel.connect();
            sftp = (ChannelSftp) channel;
            System.out.println(" Login successful ");
        } catch (JSchException e) {
            e.printStackTrace();
        }

    }
    // Upload files 
    /**
     * @param basePath  The target path 
     * @param direcotry  Target subpath 
     * @param sftpFileName  File name 
     */ 
    public void  upload(String basePath, String direcotry, String sftpFileName, InputStream inputStream) throws SftpException{
        try {
            // Go to the target directory 
            sftp.cd(basePath);
            sftp.cd(direcotry);
        } catch (SftpException e) {
            String[] dirs = direcotry.split("/");
            String temPath = basePath;
            for (String dir: dirs
                 ) {
                if( null == dir || "".equals(dir)) continue;
                temPath +="/" + dir;
                try {
                    sftp.cd(temPath);
                } catch (SftpException ex) {
                    sftp.mkdir(temPath);
                    sftp.cd(temPath);
                }
            }
        }
        sftp.put(inputStream,sftpFileName);
        System.out.println(" Upload successful ");
    }
    // Download the file 
    /**
     * @param directory  Download file path 
     * @param downloadFile  Download file name 
     * @param saveFileDirectory  Saved file path 
     */
    public void download(String directory, String downloadFile, String saveFileDirectory) throws SftpException, FileNotFoundException{
       if(directory != null && !"".equals(directory)){
           sftp.cd(directory);
       }
        String saveFile = saveFileDirectory + "//" + downloadFile;
       File file = new File(saveFile);
       sftp.get(downloadFile, new FileOutputStream(file));
        System.out.println(" Download successful ");
    }
    // Log out 




    public static void main(String[] args) throws FileNotFoundException,SftpException {
        FileUtil fiel = new FileUtil(" user name "," password ","host",22);
        fiel.login();     
        // Test upload function 
        File file = new File( Picture address );
        InputStream is = new FileInputStream(file);
        fiel.upload(" Upload target directory ",""," file name .xlxs",is);
        // Test the download function 
        try {
            fiel.download(" Download target directory "," Download filename "," Download to the path ( Local server path )");
        } catch (SftpException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}