Fallback locale mecanism is broken and highly dependent on Locale.getDefault()
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Key: WW-3219
URL: https://issues.apache.org/struts/browse/WW-3219
Project: Struts 2
Issue Type: Bug
Affects Versions: 2.1.8
Environment: French JVM
Reporter: Julien HENRY
If I have 2 resource bundles:
messages_fr.properties
messages.properties (containing en_US)
and my JVM is a French one (Locale.getDefault()=fr_FR)
then struts will always use messages_fr.properties whatever is the parameter
used for struts.locale or request_locale (even if I explicitly require en_US).
This is because of the standard ResourceBundle.getBundle() lookup algorithm.
http://java.sun.com/j2se/1.4.2/docs/api/java/util/ResourceBundle.html#getBundle(java.lang.String,%20java.util.Locale,%20java.lang.ClassLoader)
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5086301
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4303146
Potential solutions:
1) Use new JDK 1.6 feature: ResourceBundle.Control to specify the fallback
Locale
2) Don't use getBundle and implement your own resource bundle lookup mecanism
like in JSF
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