Tamil language option not working in struts 2.3.29 [duplicate] - struts2

Question

This question already has an answer here:
Struts 2 (version 2.3.28) only accepts registered locales
(1 answer)
Closed 6 years ago.
I have a multilingual struts application and recently I upgraded the struts from 2.3.20 to 2.3.29. After upgrading, the Tamil language is not working i.e. even though if we select Tamil language, the texts are shown in English.
I checked the locale setting when we select Tamil language, it is correct i.e. request_locale=ta_IN .
I tried extending I18nInterceptor in my custom interceptor class and then override the getLocaleFromParam() method as below. This also didn't work.
So please let me know if any of you has a solution for this problem.
Tamil language was working fine in Struts 2.3.20
protected Locale getLocaleFromParam(Object requestedLocale)
{
Locale locale = null;
if (requestedLocale != null) {
locale = (requestedLocale instanceof Locale) ?
(Locale) requestedLocale :
LocalizedTextUtil.localeFromString
(requestedLocale.toString(), null);
if (locale != null) {
logger.debug("applied request locale="+locale);
}
}
return locale;
}

Answer 1

You need to change replace your interceptor.
The default stack is defined in struts as below (https://struts.apache.org/docs/struts-defaultxml.html):
<interceptor-stack name="defaultStack">
<interceptor-ref name="exception"/>
<interceptor-ref name="alias"/>
<interceptor-ref name="servletConfig"/>
<interceptor-ref name="i18n"/>
<interceptor-ref name="prepare"/>
<interceptor-ref name="chain"/>
<interceptor-ref name="scopedModelDriven"/>
<interceptor-ref name="modelDriven"/>
<interceptor-ref name="fileUpload"/>
<interceptor-ref name="checkbox"/>
<interceptor-ref name="datetime"/>
<interceptor-ref name="multiselect"/>
<interceptor-ref name="staticParams"/>
<interceptor-ref name="actionMappingParams"/>
<interceptor-ref name="params"/>
<interceptor-ref name="conversionError"/>
<interceptor-ref name="validation">
<param name="excludeMethods">input,back,cancel,browse</param>
</interceptor-ref>
<interceptor-ref name="workflow">
<param name="excludeMethods">input,back,cancel,browse</param>
</interceptor-ref>
<interceptor-ref name="debugging"/>
You need to define your own interceptor and add it to default stack
<interceptor name="customi18n"
class="foo.bar.CustomI18NInterceptor" />
And add it to your own stack:
//Give a new name to your stack
<interceptor-stack name="customDefaultStack">
<interceptor-ref name="exception"/>
<interceptor-ref name="alias"/>
<interceptor-ref name="servletConfig"/>
//Replace your customi18n interceptor
<interceptor-ref name="customi18n"/>
//Same as above
.....
Make this stack your default
<default-interceptor-ref name="customDefaultStack"/>