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https://issues.apache.org/jira/browse/WW-4740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15854480#comment-15854480
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Aleksandr Mashchenko commented on WW-4740:
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When you're creating a new instance of the action by yourself the DI won't work
and needed components won't be injected.
If you really want to get localized message through Struts2 try
{{LocalizedTextUtil}}, otherwise just load resource bundle and used it.
> NullPointer in com.opensymphony.xwork2.ActionSupport.getLocale
> --------------------------------------------------------------
>
> Key: WW-4740
> URL: https://issues.apache.org/jira/browse/WW-4740
> Project: Struts 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.5.10
> Reporter: Markus Fischer
>
> After upgrading from 2.5.2 to 2.5.10 I get a NullPointerException when
> calling getText("myKey") in an utility class like this:
> {code:title=Example|borderStyle=solid}
> public class ListGenerator extends ActionSupport {
> public final List<String> getValues() {
> final List<String> result = new ArrayList<>();
> result.add(getText("select.header"));
> result.add(getText("register.female"));
> result.add(getText("register.male"));
> return result;
> }
> }
> {code}
> java.lang.NullPointerException at
> com.opensymphony.xwork2.ActionSupport.getLocale(ActionSupport.java:64)
> ....
> ERROR org.apache.struts2.dispatcher.DefaultDispatcherErrorHandler - Exception
> occurred during processing request: java.lang.NullPointerException
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