Resolving spring:messages in javascript for i18n internationalization

Question

I\'m attempting to internationalize some of our code. I have a page in JSPX which is using the tag to resolve strings from a messag

Answer 1

Thanks for your answer. Here is a more generic solution.

The idea is to provide a dynamic javascript file named "string.js", containing an associative array of messages registered in the java resource bundle, using current user language.

1) Create a method in Spring Controller to load all resource keys from resource bundle, and return the view "spring.jsp"

@RequestMapping(value="strings.js")
public ModelAndView strings(HttpServletRequest request) {
    // Retrieve the locale of the User
    Locale locale = RequestContextUtils.getLocale(request);
    // Use the path to your bundle
    ResourceBundle bundle = ResourceBundle.getBundle("WEB-INF.i18n.messages", locale);  
    // Call the string.jsp view
    return new ModelAndView("strings.jsp", "keys", bundle.getKeys());
}

2) Implement the View "strings.jsp"

<%@page contentType="text/javascript" pageEncoding="UTF-8"
%><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"
%><%@taglib prefix="spring" uri="http://www.springframework.org/tags"
%>var messages = new Array();

messages[""] = "";

3) Import "spring.js" in your HTML source code. Messages array is available and loaded with the right language.

Possible issue: If user change his language, "spring.js" must be reloaded by the navigator, but it will be cached. Clearing the cache is needed when user change his language (or other trick to get the file reloaded).