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From "vikas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (VFS-113) NullPointerException during getting InputStream from SftpFileObject
Date Wed, 04 Jul 2007 13:02:04 GMT

    [ https://issues.apache.org/jira/browse/VFS-113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12510167
] 

vikas commented on VFS-113:
---------------------------

Hi Mario Ivankovits 
   I am using commons-vfs-20070703.jar
I am facing this problem 

Exception  ************************  org.apache.commons.vfs.FileSystemException: Could not
connect to SFTP server at "sftp://maan:maan@vikas/".
org.apache.commons.vfs.FileSystemException: Could not connect to SFTP server at "sftp://maan:maan@vikas/".
	at org.apache.commons.vfs.provider.sftp.SftpFileProvider.doCreateFileSystem(SftpFileProvider.java:99)
	at org.apache.commons.vfs.provider.AbstractOriginatingFileProvider.findFile(AbstractOriginatingFileProvider.java:81)
	at org.apache.commons.vfs.provider.AbstractOriginatingFileProvider.findFile(AbstractOriginatingFileProvider.java:62)
	at org.apache.commons.vfs.impl.DefaultFileSystemManager.resolveFile(DefaultFileSystemManager.java:641)
	at org.apache.commons.vfs.impl.DefaultFileSystemManager.resolveFile(DefaultFileSystemManager.java:582)
	at com.adeptia.indigo.services.transport.ftp.SecuredFtp.connect(SecuredFtp.java:272)
	at com.adeptia.indigo.services.transport.ftp.SecuredFtp.download(SecuredFtp.java:145)
	at com.adeptia.indigo.services.transport.ftp.FtpSource.createInputStream(FtpSource.java:179)
	at com.adeptia.indigo.services.transport.support.AbstractStreamSource.initialize(AbstractStreamSource.java:44)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:483)
	at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
	at com.adeptia.indigo.utils.RemoteMBeanProxy$LocalHandler.invokeOperation(RemoteMBeanProxy.java:441)
	at com.adeptia.indigo.utils.RemoteMBeanProxy$Handler.invoke(RemoteMBeanProxy.java:294)
	at $Proxy2.initialize(Unknown Source)
	at com.adeptia.indigo.jelly.ActivityTag.runSync(ActivityTag.java:313)
	at com.adeptia.indigo.jelly.ActivityTag.doTag(ActivityTag.java:250)
	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:278)
	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:133)
	at com.werken.blissed.jelly.JellyActivity.perform(JellyActivity.java:120)
	at com.werken.blissed.ProcessEngine.enterState(ProcessEngine.java:391)
	at com.werken.blissed.ProcessEngine.followTransition(ProcessEngine.java:509)
	at com.werken.blissed.ProcessEngine.checkTransitions(ProcessEngine.java:458)
	at com.werken.blissed.ProcessEngine.startProcess(ProcessEngine.java:366)
	at com.werken.blissed.ProcessEngine.spawn(ProcessEngine.java:299)
	at com.adeptia.indigo.processflow.BlissedProcessFlow.execute(BlissedProcessFlow.java:159)
	at com.adeptia.indigo.transaction.IndigoTransaction.execute(IndigoTransaction.java:423)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:483)
	at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.access$100(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


Caused by: org.apache.commons.vfs.FileSystemException: Could not connect to SFTP server at
"vikas".
	at org.apache.commons.vfs.provider.sftp.SftpClientFactory.createConnection

(SftpClientFactory.java:214)
	at org.apache.commons.vfs.provider.sftp.SftpFileProvider.doCreateFileSystem(SftpFileProvider.java:90)
	... 57 more
Caused by: com.jcraft.jsch.JSchException: Session.connect: java.net.ConnectException: Connection
refused: connect
	at com.jcraft.jsch.Session.connect(Unknown Source)
	at com.jcraft.jsch.Session.connect(Unknown Source)
	at org.apache.commons.vfs.provider.sftp.SftpClientFactory.createConnection(SftpClientFactory.java:210)
	... 58 more
com.adeptia.indigo.utils.IndigoException: Could not connect to SFTP server at "sftp://maan:maan@vikas/".
	at com.adeptia.indigo.services.transport.ftp.SecuredFtp.connect(SecuredFtp.java:278)
	at com.adeptia.indigo.services.transport.ftp.SecuredFtp.download(SecuredFtp.java:145)
	at com.adeptia.indigo.services.transport.ftp.FtpSource.createInputStream(FtpSource.java:179)
	at com.adeptia.indigo.services.transport.support.AbstractStreamSource.initialize(AbstractStreamSource.java:44)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:483)
	at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
	at com.adeptia.indigo.utils.RemoteMBeanProxy$LocalHandler.invokeOperation(RemoteMBeanProxy.java:441)
	at com.adeptia.indigo.utils.RemoteMBeanProxy$Handler.invoke(RemoteMBeanProxy.java:294)
	at $Proxy2.initialize(Unknown Source)
	at com.adeptia.indigo.jelly.ActivityTag.runSync(ActivityTag.java:313)
	at com.adeptia.indigo.jelly.ActivityTag.doTag(ActivityTag.java:250)
	at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:278)
	at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:133)
	at com.werken.blissed.jelly.JellyActivity.perform(JellyActivity.java:120)
	at com.werken.blissed.ProcessEngine.enterState(ProcessEngine.java:391)
	at com.werken.blissed.ProcessEngine.followTransition(ProcessEngine.java:509)
	at com.werken.blissed.ProcessEngine.checkTransitions(ProcessEngine.java:458)
	at com.werken.blissed.ProcessEngine.startProcess(ProcessEngine.java:366)
	at com.werken.blissed.ProcessEngine.spawn(ProcessEngine.java:299)
	at com.adeptia.indigo.processflow.BlissedProcessFlow.execute(BlissedProcessFlow.java:159)
	at com.adeptia.indigo.transaction.IndigoTransaction.execute(IndigoTransaction.java:423)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:483)
	at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(Unknown Source)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.access$100(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown Source)
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Print Exception**************************    
2007-07-04 18:26:49,859 ERROR [Flow Thread(192168001166118355380787500016)]  flow     com.adeptia.indigo.jelly.ActivityTag.runSync(ActivityTag.java:320)
- Process_Flow_For_SecureFTP|FTP_Source_Secure_Test|FtpSource|Failed|administrators|192168001166118294134403100005|192168001166118355380753100015|192168001166118294076370300003||admin|Error
initializing activity FtpSource:FTP_Source_Secure_Test:192168001166118294076370300003[Could
not connect to SFTP server at "sftp://maan:maan@vikas/".]|wshost
com.adeptia.indigo.utils.IndigoException: Could not connect to SFTP server at "sftp://maan:maan@vikas/".



please help me regards this

> NullPointerException during getting InputStream from SftpFileObject
> -------------------------------------------------------------------
>
>                 Key: VFS-113
>                 URL: https://issues.apache.org/jira/browse/VFS-113
>             Project: Commons VFS
>          Issue Type: Bug
>            Reporter: Tim Rademacher
>             Fix For: 1.1
>
>         Attachments: SftpFileObject.diff
>
>
> Hi, 
> I experienced unregular NullPointerExceptions while getting an InputStream from an SftpFileObject.
It only occures in a multithreading environment.
> I made a patch. By now it seems to work!
> Regards,
> Tim

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