无法将文件发送到 SFTP 服务器。我没有从下面的日志中找到确切的问题。使用Spring 集成 SFTP 配置将我的文件发送到客户端实例。我已引用此链接https://blog.pavelsklenar.com/spring-integration-sftp-upload-example/进行实施。我在这里做错了什么。任何帮助将不胜感激，谢谢。
下面是代码片段
DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory(true);
factory.setHost(sftpHost);
factory.setPort(sftpPort);
factory.setUser(sftpUser);
factory.setPassword(sftpPasword);
factory.setAllowUnknownKeys(true);
请参阅下面的日志
10-12-2018 03:03:22.261 [task-scheduler-1] INFO org.springframework.integration.sftp.session.DefaultSftpSessionFactory.promptYesNo - The authenticity of host 'example.com' can't be established.
RSA key fingerprint is d1:e9:4e:64:a8:e5:19:46:7a:0e:79:2d:bf:27:cb:4c.
Are you sure you want to continue connecting?
10-12-2018 03:03:22.264 [task-scheduler-1] DEBUG org.springframework.integration.sftp.session.DefaultSftpSessionFactory.promptYesNo - No UserInfo provided - The authenticity of host 'example.com' can't be established.
RSA key fingerprint is d1:e9:4e:64:a8:e5:19:46:7a:0e:79:2d:bf:27:cb:4c.
Are you sure you want to continue connecting?, …