Before software can be reusable it first has to be usable.

Internationalizing Struts Application

Internationalization also known as I18N is used for displaying content specific to the locale based on their languages, currencies and formatting conventions.

Resource bundle is the file that contains the key/value pairs for the default language of your application. The naming format for this file is

For example, if you have a bundle named ApplicationResource for the English language in the Unites States for the Windows platform, then your properties file name would be

Lets take a senario in which the user can see the same page in four different languages like English, French, German and Italian. The jsp page gets displayed according to the language selected by the user.

Our default resource bundle is file. To link the resouce bundle with the application the following tag should be added in the struts-config.xml file.

1.<message-resources parameter="com/vaannila/ApplicationResource"/>

The next step is to create file specific to each language.

French -

1.label.welcome = J'aime Struts

Italian -

1.label.welcome = ti amo Struts

German -

1.label.welcome = Ich liebe Struts

There are two ways in which you can internationalize struts application. One is by setting the org.apache.struts.action.LOCALE to the corresponding language and the other way is to set the language preference in the browser.

In this example we will see how to internationalize Struts application by setting different values to org.apache.struts.action.LOCALE variable.

Based on the language selected by the user the corresponding method in the LocaleAction is called. LocaleAction class extends DispatchAction.

01.public class LocaleAction extends DispatchAction {
03.private final static String SUCCESS = "success";
05.public ActionForward english(ActionMapping mapping, ActionForm  form,
06.HttpServletRequest request, HttpServletResponse response)
07.throws Exception {
08.HttpSession session = request.getSession();
09.session.setAttribute("org.apache.struts.action.LOCALE", Locale.ENGLISH);
10.return mapping.findForward(SUCCESS);
13.public ActionForward french(ActionMapping mapping, ActionForm  form,
14.HttpServletRequest request, HttpServletResponse response)
15.throws Exception {
16.HttpSession session = request.getSession();
17.session.setAttribute("org.apache.struts.action.LOCALE", Locale.FRENCH);
18.return mapping.findForward(SUCCESS);
21.public ActionForward german(ActionMapping mapping, ActionForm  form,
22.HttpServletRequest request, HttpServletResponse response)
23.throws Exception {
24.HttpSession session = request.getSession();
25.session.setAttribute("org.apache.struts.action.LOCALE", Locale.GERMAN);
26.return mapping.findForward(SUCCESS);
29.public ActionForward italian(ActionMapping mapping, ActionForm  form,
30.HttpServletRequest request, HttpServletResponse response)
31.throws Exception {
32.HttpSession session = request.getSession();
33.session.setAttribute("org.apache.struts.action.LOCALE", Locale.ITALIAN);
34.return mapping.findForward(SUCCESS);

Based on the value set in the org.apache.struts.action.LOCALE variable the corresponding file will be used for displaying data.

Run the application. The following page will be dispalyed to the user.

On selecting the french language the following page will be displayed.

On selecting the german language the following page will be displayed.

On selecting the italian language the following page will be displayed.

You can download the source code of the Struts Internationalization example by clicking on the Download link below.

Source :Download
Source + Lib :Download

  MVC Struts Architecture
  Hello World Example in Eclipse
  Hello World Application
  Login Application Using Action Form
  DispatchAction Class
  LookupDispatchAction Class
  Using WildCards in ActionMapping Tutorial
  Multiple Struts Configuration Files Tutorial
  Struts Displaytag TableDecorator
  Export to Excel, PDF, CSV and XML using Display tag
  Pagination and Sorting using Display tag
  Export WorkBook to Excel
  Export WorkBook to Excel
  Export JSP Page to Excel
  Internationalizing Struts Application
  Internationalizing Struts Application i18
  Internationalizing Struts Application i18
  Struts Custom Validation Example
  Struts Mask Validation Rule Example
  Struts Date Validation Example
  Client-Side JavaScript Validation
  Highlighting Error Fileds
  Validator Framework
  DynaActionForm Bean
  Struts Logic Tag
  Struts HTML Tag
  Struts Selected HTML Tag
  Struts File Upload