[
https://issues.apache.org/jira/browse/WW-3609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lukasz Lenart updated WW-3609:
------------------------------
Fix Version/s: 2.3.x
> Struts problem report not working properly (Freemarker template error in
> error.ftl at line 68 in conjunction with special exception types)
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: WW-3609
> URL: https://issues.apache.org/jira/browse/WW-3609
> Project: Struts 2
> Issue Type: Bug
> Affects Versions: 2.2.1
> Environment: Sun JDK 1.6
> Reporter: Markus Kreusch
> Priority: Minor
> Fix For: 2.3.x
>
> Attachments: IndexAction.java, freemarker-template-error.html
>
>
> I've a struts 2 application where the instantiation of an action leads to a
> org.hibernate.exception.GenericJDBCException. This exception is "expected"
> (during development) and because development mode is enabled it should lead
> to a "Struts Problem Report" page showing the exception details.
> The problem report page does not contain the full information of the
> exception but a big yellow box titled "FreeMarker template error!" appears.
> Details inside the box are:
> Method public java.lang.String
> org.hibernate.exception.NestableRuntimeException.getMessage(int) threw an
> exception when invoked on org.hibernate.exception.GenericJDBCException: could
> not execute query
> The problematic instruction:
> ----------
> ==> ${msg[0]} [on line 68, column 29 in
> org/apache/struts2/dispatcher/error.ftl]
> freemarker.template.TemplateModelException: Method public java.lang.String
> org.hibernate.exception.NestableRuntimeException.getMessage(int) threw an
> exception when invoked on org.hibernate.exception.GenericJDBCException: could
> not execute query
> at
> freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:130)
> .... [part of the stack trace ommited]
> Caused by: java.lang.NullPointerException
> at
> freemarker.ext.beans.SimpleMemberModel.unwrapArguments(SimpleMemberModel.java:85)
> at
> freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:106)
> ... 47 more
> I could determine the exact position of the NullPointerException by debugging
> the code. I'm not sure why but the class SimpleMemberModel gets instantiated
> with the method
> org.hibernate.exception.NestableRuntimeException.getMessage(int) and null for
> the argTypes array. This leads to the NullPointerException at line 85 (int
> typeLen = argTypes.length;). Maybe struts is "confused" because the class
> org.hibernate.exception.NestableRuntimeException contains two methods called
> getMessage one without and one with an int as parameter. I'll try to create a
> minimal example to reproduce the behaviour as soon as possible.
> The main problem with this issue is that the stack trace of the former
> exception is swallowed, not printed in the logfile or anywhere else. Please
> check and hopefully fix this it took some hours to understand what the reason
> of this error is.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
