Navigating to Certain Pages Triggers Stack Trace
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
Symptoms
Navigating to certain pages/spaces triggers an error page with a stack trace:
The following appears in the atlassian-confluence.log:
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2014-11-25 11:39:07,461 ERROR [http-bio-8556-exec-2] [ContainerBase.[Standalone].[localhost].[/confluence]] log Unhandled exception occurred whilst decorating page
-- url: /confluence/display/OS/Office+Space+Home | userName: admin | referer: http://localhost:8556/confluence/admin/cache/showStatistics.action
java.lang.RuntimeException: javax.servlet.ServletException: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getConfluenceResourceTags' in class com.atlassian.confluence.setup.velocity.VelocityFriendlyPageBuilderService threw exception java.lang.ClassCastException: java.util.HashMap cannot be cast to java.lang.Integer at /decorators/includes/header.vm[line 76, column 20]
at com.atlassian.confluence.util.profiling.ConfluenceSitemeshDecorator$1.doInTransaction(ConfluenceSitemeshDecorator.java:104)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
at com.atlassian.confluence.util.profiling.ConfluenceSitemeshDecorator.render(ConfluenceSitemeshDecorator.java:90)
...
Caused by: javax.servlet.ServletException: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getConfluenceResourceTags' in class com.atlassian.confluence.setup.velocity.VelocityFriendlyPageBuilderService threw exception java.lang.ClassCastException: java.util.HashMap cannot be cast to java.lang.Integer at /decorators/includes/header.vm[line 76, column 20]
... 170 more
Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getConfluenceResourceTags' in class com.atlassian.confluence.setup.velocity.VelocityFriendlyPageBuilderService threw exception java.lang.ClassCastException: java.util.HashMap cannot be cast to java.lang.Integer at /decorators/includes/header.vm[line 76, column 20]
... 175 more
Caused by: java.lang.ClassCastException: java.util.HashMap cannot be cast to java.lang.Integer
... 187 more Diagnosis
Run the following query to see what's stored in the database for atlassian.confluence.css.resource.counter for the problematic space. The returned value should be something like <int>5<int>. If not then you're affected by this issue.
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select * from BANDANA where BANDANACONTEXT = '<SPACEKEY>' and BANDANAKEY = 'atlassian.confluence.css.resource.counter';Be sure to replace <SPACEKEY> with the key of the problematic space
Cause
The value for atlassian.confluence.css.resource.counter is of a type other than integer, which Confluence does not expect and cannot handle. This could have happened if you had a custom theme in place in a version of Confluence before 4.1 and then upgraded to 4.1+.
Solution
Resolution
Since the space will probably be inaccessible, you'll have to fix the faulty value with a database update.
Be sure to backup your database first!
To remove the faulty value:
Run the following query to change the value to <int>1<int>, which is the default value for that property:
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update BANDANA
set BANDANAVALUE = '<int>1</int>'
where BANDANAKEY = 'atlassian.confluence.css.resource.counter' and BANDANACONTEXT = '<SPACEKEY>';Cache Statistics or restart Confluence in order to pick up the database update.
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