你好，我正在使用Spring Integration的文件轮询器，我们最近迁移到了Java 17。Spring Integration从5.5.15移至6.0.1
我的老朋友是：

@Bean  
public SessionFactory<LsEntry> sftpSessionFactory(){ 
   DefaultSftpSessionFactory sf = new DefaultSftpSessionFactory();  
   sf.setHost(serverhost);  
   sf.setPort(portname); 
   sf.setUser(username);
   Resource resource = resourceLoader.getResource(sftpKeyPrivateKey); 
   sf.setPrivateKey(resource); 
   sf.setPrivateKeyPassphrase(sftpKeyPrivateKeyPassword); 
   sf.setAllowUnknownKeys(true); 
   return new CachingSessionFactory<LsEntry> (sf); 
}

我的Session Factory的新代码看起来像这样：

@Bean 
public SessionFactory<org.apache.sshd.sftp.client.SftpClient.DirEntry> sftpSessionFactory() 
{ 
    DefaultSftpSessionFactory sf = new DefaultSftpSessionFactory();  
    sf.setHost(serverhost); 
    sf.setPort(portname);
    sf.setUser(username); 
    Resource resource = resourceLoader.getResource(sftpKeyPrivateKey); 
    sf.setPrivateKey(resource); 
    sf.setPrivateKeyPassphrase(sftpKeyPrivateKeyPassword); 
    sf.setAllowUnknownKeys(true); 
    return new  CachingSessionFactory<org.apache.sshd.sftp.client.SftpClient.DirEntry(sf); 
}

其他一切都保持不变。旧代码按预期工作，但在新代码中，当我启动我的服务时，我得到以下异常：

Caused by: java.lang.IllegalStateException: failed to create SFTP Session 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:291) 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:67) 
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:85) 
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:82) 
at org.springframework.integration.util.SimplePool.doGetItem(SimplePool.java:206) 
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:187) ... 23 more Caused by: org.apache.sshd.common.SshException: No more authentication methods available 
at org.apache.sshd.common.future.AbstractSshFuture.verifyResult(AbstractSshFuture.java:127) 
at org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:39) 
at org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:32) 
at org.apache.sshd.common.future.VerifiableFuture.verify(VerifiableFuture.java:43) 
at org.apache.sshd.common.future.VerifiableFuture.verify(VerifiableFuture.java:68) 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.initClientSession(DefaultSftpSessionFactory.java:318) 
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:281) ... 28 more 
Caused by: org.apache.sshd.common.SshException: No more authentication methods available