在Spring SFTP上设置首选身份验证方法

@Bean
public DefaultSftpSessionFactory sftpSessionFactory() {
    DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory();
    factory.setHost("sftp.example.com");
    factory.setPort(22);
    factory.setUser("username");
    factory.setPassword("password");
    factory.setAllowUnknownKeys(true);
    return factory;
}

@Bean
public DefaultSftpSessionFactory sftpSessionFactory() {
    DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory();
    factory.setHost("sftp.example.com");
    factory.setPort(22);
    factory.setUser("username");
    factory.setPassword("password");
    factory.setAllowUnknownKeys(true);
    
    List<String> preferredAuthMethods = new ArrayList<>();
    preferredAuthMethods.add("PublicKeyAuthentication");
    preferredAuthMethods.add("PasswordAuthentication");
    factory.setPreferredAuthMethods(preferredAuthMethods);
    
    return factory;
}

@Autowired
private SftpOperations sftpOperations;

public void uploadFile(String localFilePath, String remoteFilePath) {
    sftpOperations.put(localFilePath, remoteFilePath);
}

public void downloadFile(String remoteFilePath, String localFilePath) {
    sftpOperations.get(remoteFilePath, localFilePath);
}

public void deleteFile(String remoteFilePath) {
    sftpOperations.remove(remoteFilePath);
}