修改了描述我在该VM中运行了一个石英作业，我曾经遇到此错误
org.apache.commons.vfs2.FileSystemException: Could not connect to SFTP server at "sftp://reports.staging.companyname.com/".
at org.apache.commons.vfs2.provider.sftp.SftpFileProvider.doCreateFileSystem(SftpFileProvider.java:107)
at org.apache.commons.vfs2.provider.AbstractOriginatingFileProvider.getFileSystem(AbstractOriginatingFileProvider.java:103)
at org.apache.commons.vfs2.provider.AbstractOriginatingFileProvider.findFile(AbstractOriginatingFileProvider.java:81)
at org.apache.commons.vfs2.provider.AbstractOriginatingFileProvider.findFile(AbstractOriginatingFileProvider.java:65)
at org.apache.commons.vfs2.impl.DefaultFileSystemManager.resolveFile(DefaultFileSystemManager.java:693)
at org.apache.commons.vfs2.impl.DefaultFileSystemManager.resolveFile(DefaultFileSystemManager.java:621)
at com.companyname.appname.connector.dropbox.sftp.PseSFTPConnection.doConnect(PseSFTPConnection.java:149)
at com.companyname.appname.connector.dropbox.sftp.PseSFTPConnection.connect(PseSFTPConnection.java:109)
at com.companyname.appname.connector.dropbox.sftp.DropboxDaoSFTPImpl.isAvailable(DropboxDaoSFTPImpl.java:183)
at com.companyname.appname.batch.jobs.DataFileProcessorJob.execute(DataFileProcessorJob.java:46)
at sun.reflect.GeneratedMethodAccessor137.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:273)
at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:264)
at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:86)
at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
Caused by: org.apache.commons.vfs2.FileSystemException: Could not connect to SFTP server at "reports.staging.companyname.com".
at org.apache.commons.vfs2.provider.sftp.SftpClientFactory.createConnection(SftpClientFactory.java:230)
at org.apache.commons.vfs2.provider.sftp.SftpFileProvider.doCreateFileSystem(SftpFileProvider.java:96)
... 17 more
Caused by: com.jcraft.jsch.JSchException: Session.connect: java.net.SocketException: Connection reset
at com.jcraft.jsch.Session.connect(Session.java:565)
at com.jcraft.jsch.Session.connect(Session.java:183)
at org.apache.commons.vfs2.provider.sftp.SftpClientFactory.createConnection(SftpClientFactory.java:226)
... 18 more
sdfFileProcessing_Worker-9 2019-11-04 05:20:03,915 ERROR: com.companyname.appname.connector.dropbox.sftp.DropboxDaoSFTPImpl - Is available
当我使用普通的Sftp命令行实用程序时，也会收到“由对等方重置连接”“ ssh_exchange_identification：读取：对等方重置连接无法读取数据包：“来自对等方的连接重置”，来自Java代码，并且正常的Sftp命令->连接也失败。
root@qa-batch:~# sftp [email protected] ssh_exchange_identification: read: Connection reset by peer Couldn't read packet: Connection reset by peer root@qa-batch:~# free -m total used free shared buffers cached Mem: 3953 3522 430 0 299 1570 -/+ buffers/cache: 1652 2300 Swap: 2047 6 2041 root@qa-batch:~#我一直在得到这个例外。
问题不断发生，并且在使用finally块的代码中正确断开了连接。我检查了一些堆栈溢出论坛，但他们提到这可能是堆问题。因此，我尝试停止了Java Crystal服务，暂时可以使用sftp cli命令进行连接（即5分钟后）。但是我的要求是Java应用程序应该能够连接到sftp并读取远程文件，然后处理并更新到DB。
修改了描述，我在该VM中运行了一个石英作业，我曾经遇到此错误org.apache.commons.vfs2.FileSystemException：无法连接到SFTP服务器，位于“ sftp：//reports.staging....。
通常，“通过对等方重置连接”意味着另一端存在问题（在这种情况下为SFTP远程服务器），因此通常Quartz Job和Java都不“有罪”。也许有时您也可以检查网络中的问题，但这不是Java ...