Database Driven Resource Bundles - Examples and best practice?

[russellgordon]

Hi,

I am trying to implement a database driven resource bundle and am searching for the best implementation. I have the requirement to change the web page text based on the language and also what user has logged in. I'd like to access my resource bundle from my action classes as well as my JSP pages. My application uses struts 2 and spring 2.5.6.

Spring is set up for annotation based configuration.

My current implementation is as follows.

@Component
public class CoreDatabaseResourceBundle extends ListResourceBundle {

    @Autowired
    private TranslationService translationService;
    private Locale locale;
    private String moduleName;
    private Object[][] contents;

    @PostConstruct
    public void initialise() {
        contents = this.translationService.getTranslations(this.moduleName, this.locale);
    }

    @Override
    public Object[][] getContents(){
        return contents; 
    }

// other getters and setters omitted
}

Then on my JSP

<fmt:setLocale scope="page" value="en" />
<fmt:setBundle basename="com.example.CoreDatabaseResourceBundle"/>

<fmt:message key="test.message"/>

When i debug the code the resource bundle initialises okay so the annotations are working. However when the JSP creates an instance of the resource bundle it does not do it via spring hence my translation service is null.

Any pointers how to fix my current implementaion or pointers to a better more 'spring' way of implemention this is appreciated!

Thanks

[Marten Deinum]

Use [ code][/code ] tags when posting code, that way it remains readable.

Use a MessageSource instead of a ResourceBundle, use Spring for view resolving and it should work. The reference guide explains internationalization in more detail.

[russellgordon]

Thanks for your help that helped a lot. So to summarise

I now extend an AbstractMessageSource

@Component("messageSource")
public class TranslationMessageSource extends AbstractMessageSource {

    private static final Log LOGGER = LogFactory.getLog(TranslationMessageSource.class);

    @Autowired
    private TranslationService translationService;
    // getters/setters and other methods ommited for clarity
}

and in my jsp I use the spring tag for message

<%@ taglib uri="http://www.springframework.org/tags" prefix="spring" %>
<spring:message code="sample.test"/>

and that now works fine.

Thanks!