我正在尝试轮询远程目录以查找文件并发送MQ消息，通知其他组件移动文件。我们遇到这种情况，线程/轮询器通过密码登录并连接到服务器并在几秒钟后立即断开与服务器的连接并通过“同步远程目录的问题...”异常并且线程从中恢复并反复进行通过同样的问题。
这是特定线程00000027的生命周期，它在几秒内连接和断开。凭据通过Jsch API传递。它似乎试图使用其他选项进行身份验证，并且仅通过密码成功，但立即断开连接。
<int:publish-subscribe-channel id="fileChannel">
<int:interceptors>
<int:wire-tap channel="logger"/>
</int:interceptors>
</int:publish-subscribe-channel>
<int:logging-channel-adapter id="logger" level="INFO"/>
<!-- File polling and retrieval from source -->
<int-sftp:inbound-channel-adapter id="fileSource"
channel="fileChannel" session-factory="sftpSessionFactory"
charset="UTF-8" auto-create-local-directory="true"
delete-remote-files="false"
remote-directory="${sourceRootDir}/${dir}" remote-file-separator="/"
local-directory="${tempPath}" auto-startup="false" filter="fileFilter">
<int:poller fixed-rate="5000" max-messages-per-poll="-1"/> <!-- negative value means "get every file", DO NOT CHANGE without revisiting fileFilter logic -->
</int-sftp:inbound-channel-adapter>
<!-- Need an instance of the file filter per each context so it can carry
the property of the unique dir (which otherwise it has no way of discovering) -->
<bean id="fileFilter" class="com.pnc.tsc.hca.DownloadAvoidingFileFilter">
<property name="filter" value=".tmp" />
<property name="directory" value="${dir}" />
<property name="channel" ref="queueChannel" />
<property name="sourceRootDir" value="${sourceRootDir}" />
<property name="destinationRootDir" value="${destinationRootDir}" />
</bean>
<bean id="sftpSessionFactory"
class="org.springframework.integration.sftp.session.DefaultSftpSessionFactory">
<property name="host" value="${SOURCE_FTP_HOST}"/>
<property name="port" value="${SOURCE_FTP_PORT}"/>
<property name="user" value="${SOURCE_FTP_USER}"/>
<property name="password" value="${SOURCE_FTP_PASS}"/>
</bean>
<bean id="cachingSessionFactory"
class="org.springframework.integration.file.remote.session.CachingSessionFactory">
<constructor-arg ref="sftpSessionFactory"/>
<property name="poolSize" value="${poolSize}"/>
<property name="sessionWaitTimeout" value="${sessionWaitTimeout}"/>
</bean>
[6/30/15 13:54:37:073 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Connecting to <<servername>> port 22
[6/30/15 13:54:37:112 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Connection established
[6/30/15 13:54:37:146 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Remote version string: SSH-2.0-OpenSSH_6.0
[6/30/15 13:54:37:274 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Local version string: SSH-2.0-JSCH-0.1.53
[6/30/15 13:54:37:415 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
[6/30/15 13:54:37:435 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
[6/30/15 13:54:38:251 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
[6/30/15 13:54:38:889 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log SSH_MSG_KEXINIT sent
[6/30/15 13:54:38:932 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log SSH_MSG_KEXINIT received
[6/30/15 13:54:38:944 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
[6/30/15 13:54:39:023 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256
[6/30/15 13:54:39:036 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
[6/30/15 13:54:39:099 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
[6/30/15 13:54:39:195 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
[6/30/15 13:54:39:270 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
[6/30/15 13:54:39:283 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: none,zlib@openssh.com
[6/30/15 13:54:39:297 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server: none,zlib@openssh.com
[6/30/15 13:54:39:616 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server:
[6/30/15 13:54:39:736 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server:
[6/30/15 13:54:39:764 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
[6/30/15 13:54:39:789 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
[6/30/15 13:54:39:798 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
[6/30/15 13:54:39:808 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc,aes192-ctr,aes192-cbc,aes256-ctr,aes256-cbc
[6/30/15 13:54:39:817 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
[6/30/15 13:54:39:833 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
[6/30/15 13:54:39:842 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: none
[6/30/15 13:54:39:853 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client: none
[6/30/15 13:54:39:868 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client:
[6/30/15 13:54:39:888 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client:
[6/30/15 13:54:39:912 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: server->client aes128-ctr hmac-md5 none
[6/30/15 13:54:39:922 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client->server aes128-ctr hmac-md5 none
[6/30/15 13:54:40:190 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log SSH_MSG_KEX_ECDH_INIT sent
[6/30/15 13:54:40:215 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log expecting SSH_MSG_KEX_ECDH_REPLY
[6/30/15 13:54:40:279 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log ssh_rsa_verify: signature true
[6/30/15 13:54:40:376 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Host '<<servername>>' is known and matches the RSA host key
[6/30/15 13:54:40:398 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log SSH_MSG_NEWKEYS sent
[6/30/15 13:54:40:561 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log SSH_MSG_NEWKEYS received
[6/30/15 13:54:40:582 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log SSH_MSG_SERVICE_REQUEST sent
[6/30/15 13:54:40:595 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log SSH_MSG_SERVICE_ACCEPT received
[6/30/15 13:54:40:644 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Authentications that can continue: publickey,keyboard-interactive,password
[6/30/15 13:54:40:660 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Next authentication method: publickey
[6/30/15 13:54:40:776 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Authentications that can continue: keyboard-interactive,password
[6/30/15 13:54:40:901 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Next authentication method: keyboard-interactive
[6/30/15 13:54:41:339 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Authentications that can continue: password
[6/30/15 13:54:41:349 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Next authentication method: password
[6/30/15 13:54:41:381 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Authentication succeeded (password).
[6/30/15 13:54:41:564 EDT] 00000027 SystemOut O 13:54:41.564 INFO [task-scheduler-2][com.pnc.tsc.hca.DownloadAvoidingFileFilter] File in directory inbound/cmnzip/ appear to be : [Lcom.jcraft.jsch.ChannelSftp$LsEntry;@5fda5fda
[6/30/15 13:54:41:565 EDT] 00000027 jsch I org.springframework.integration.sftp.session.JschLogger log Disconnecting from <<servername>> port 22
[6/30/15 13:54:41:605 EDT] 00000027 LoggingHandle E org.springframework.integration.handler.LoggingHandler handleMessageInternal org.springframework.messaging.MessagingException: Problem occurred while synchronizing remote to local directory; nested exception is org.springframework.messaging.MessagingException: Failed to execute on session; nested exception is org.springframework.core.NestedIOException: Failed to list files; nested exception is 2: No such file
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:217)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.doReceive(AbstractInboundFileSynchronizingMessageSource.java:196)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.doReceive(AbstractInboundFileSynchronizingMessageSource.java:60)
at org.springframework.integration.endpoint.AbstractMessageSource.receive(AbstractMessageSource.java:64)
at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:144)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:192)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:55)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:149)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:146)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:298)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:292)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:738)
Caused by: org.springframework.messaging.MessagingException: Failed to execute on session; nested exception is org.springframework.core.NestedIOException: Failed to list files; nested exception is 2: No such file
at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:345)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:175)
... 23 more
Caused by: org.springframework.core.NestedIOException: Failed to list files; nested exception is 2: No such file
at org.springframework.integration.sftp.session.SftpSession.list(SftpSession.java:103)
at org.springframework.integration.sftp.session.SftpSession.list(SftpSession.java:50)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer$1.doInSession(AbstractInboundFileSynchronizer.java:179)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer$1.doInSession(AbstractInboundFileSynchronizer.java:175)
at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:336)
... 24 more
Caused by: 2: No such file
at com.jcraft.jsch.ChannelSftp.throwStatusError(ChannelSftp.java:2846)
at com.jcraft.jsch.ChannelSftp._stat(ChannelSftp.java:2198)
at com.jcraft.jsch.ChannelSftp._stat(ChannelSftp.java:2215)
at com.jcraft.jsch.ChannelSftp.ls(ChannelSftp.java:1565)
at com.jcraft.jsch.ChannelSftp.ls(ChannelSftp.java:1526)
at org.springframework.integration.sftp.session.SftpSession.list(SftpSession.java:91)
... 28 more
切换到cachingSessionFactory..i后得到此异常消息......
[7/7/15 13:17:52:751 EDT] 000000a0 jsch I org.springframework.integration.sftp.session.JschLogger log kex: client->server aes128-ctr hmac-md5 none
[7/7/15 13:17:52:255 EDT] 000000a5 LoggingHandle E org.springframework.integration.handler.LoggingHandler handleMessageInternal org.springframework.messaging.MessagingException: Problem occurred while synchronizing remote to local directory; nested exception is org.springframework.messaging.MessagingException: Failed to obtain pooled item; nested exception is java.lang.IllegalStateException: failed to create SFTP Session
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:217)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.doReceive(AbstractInboundFileSynchronizingMessageSource.java:196)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.doReceive(AbstractInboundFileSynchronizingMessageSource.java:60)
at org.springframework.integration.endpoint.AbstractMessageSource.receive(AbstractMessageSource.java:64)
at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:144)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:192)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:55)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:149)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:146)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:298)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:292)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:738)
Caused by: org.springframework.messaging.MessagingException: Failed to obtain pooled item; nested exception is java.lang.IllegalStateException: failed to create SFTP Session
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:178)
at org.springframework.integration.file.remote.session.CachingSessionFactory.getSession(CachingSessionFactory.java:118)
at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:334)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:175)
... 23 more
Caused by: java.lang.IllegalStateException: failed to create SFTP Session
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:355)
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:49)
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:76)
at org.springframework.integration.file.remote.session.CachingSessionFactory$1.createForPool(CachingSessionFactory.java:73)
at org.springframework.integration.util.SimplePool.doGetItem(SimplePool.java:188)
at org.springframework.integration.util.SimplePool.getItem(SimplePool.java:169)
... 26 more
Caused by: java.lang.IllegalStateException: failed to connect
at org.springframework.integration.sftp.session.SftpSession.connect(SftpSession.java:272)
at org.springframework.integration.sftp.session.DefaultSftpSessionFactory.getSession(DefaultSftpSessionFactory.java:350)
... 31 more
Caused by: com.jcraft.jsch.JSchException: connection is closed by foreign host
at com.jcraft.jsch.Session.connect(Session.java:269)
at com.jcraft.jsch.Session.connect(Session.java:183)
at org.springframework.integration.sftp.session.SftpSession.connect(SftpSession.java:263)
... 32 more
答案 0 :(得分：1)
最好的猜测是远程目录不存在。失败是在列表操作期间。
答案 1 :(得分：0)
我有20个奇怪的目录要进行轮询，因此在启动时，SI SFTP适配器将尝试实例化与远程服务器的最少20个连接/会话。但我的poolize = 10和sessionWaitTimeout = 1000的cacheSessionFactory设置。显然这就是问题，poolize限制为10，而我有20个目录要汇集。 SI / Spring sftp正在尽力在20个轮询器中分享这10个连接。 ====设置poolsize = 50和sessionTimeOut = 10000 ..就像魅力一样。