Spring MVC Internationalization

最新推荐文章于 2025-08-10 11:14:23 发布

转载最新推荐文章于 2025-08-10 11:14:23 发布 · 533 阅读

文章标签：

#internationalization #spring #mvc #numbers #translation #file

本文介绍如何使用SpringMVC实现网站的国际化，通过设置不同的资源文件来支持多种语言显示，并利用Spring框架自动选择合适的语言包。

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Spring MVC Internationalization

Text labels and headings can be externalized into resource bundles, allowing Spring's internationalization features to automatically display web pages in the appropriate language.

Tip - as an alternative, check out the Google website translator gadget , which can dynamically translate web pages into 51 languages (note that, in Google's own words, "it's not a perfect substitute for the art of professional translation").

Resource Bundles

We set up three resource bundle files called messages_en.properties (English), messages_fr.properties (French) and messages.properties (the default if no other file is found).

The files contain key-value pairs representing text for the web pages in different languages.

messages_en.properties

   01. 
   application.name=hello world   
  
   02. 
      
   03. 
   #navigation.back=Back   
  
   04. 
   #falls back to messages.properties   
  
   05. 
      
   06. 
   country.plural=Countries   
  
   07. 
   country.details=Country Details   
  
   08. 
   country.name=Name   
  
   09. 
   country.area=Area   
  
   10. 
   country.population=Population   
  
   11. 
   country.updatedOn=Last Updated   
  
   12. 
   country.currency=Currency

messages_fr.properties

   01. 
   application.name=bonjour monde   
  
   02. 
      
   03. 
   navigation.back=Retournez   
  
   04. 
      
   05. 
   country.plural=Pays   
  
   06. 
   country.details=Détails de pays   
  
   07. 
   country.name=Nom   
  
   08. 
   country.area=Taille   
  
   09. 
   country.population=Population   
  
   10. 
   country.updatedOn=Dernier mis à jour   
  
   11. 
   country.currency=Devise

messages.properties

   01. 
   application.name=hello world   
  
   02. 
      
   03. 
   navigation.back=Back   
  
   04. 
      
   05. 
   country.plural=Countries   
  
   06. 
   country.details=Country Details   
  
   07. 
   country.name=Name   
  
   08. 
   country.area=Area   
  
   09. 
   country.population=Population   
  
   10. 
   country.updatedOn=Last Updated   
  
   11. 
   country.currency=Currency

We tell Spring how to locate these resource bundles in the configuration

section.

JSP Pages

Next, we convert our JSP pages to use the <spring:message> tag from the Spring tag library to display static text, and to use the JSTL <fmt:formatNumber> and <fmt:formatDate> tags to display numbers and dates.

   01. 
   < table >   
  
   02. 
      < tr >   
  
   03. 
        < td >< spring:message code = "country.name" /></ td >   
  
   04. 
        < td >${country.name}</ td >   
  
   05. 
      </ tr >   
  
   06. 
      < tr >   
  
   07. 
        < td >< spring:message code = "country.area" /></ td >   
  
   08. 
        < td >< fmt:formatNumber type = "number" value = "${country.area}" /></ td >   
  
   09. 
      </ tr >   
  
   10. 
      < tr >   
  
   11. 
        < td >< spring:message code = "country.population" /></ td >   
  
   12. 
        < td >< fmt:formatNumber type = "number" value = "${country.population}" /></ td >   
  
   13. 
      </ tr >   
  
   14. 
      < tr >   
  
   15. 
        < td >< spring:message code = "country.updatedOn" /></ td >   
  
   16. 
        < td >< fmt:formatDate value = "${country.populationLastUpdated}" /></ td >   
  
   17. 
      </ tr >   
  
   18. 
      < tr >   
  
   19. 
        < td >< spring:message code = "country.currency" /></ td >   
  
   20. 
        < td >${country.currency}</ td >   
  
   21. 
      </ tr >   
  
   22. 
   </ table >

Locale

The appropriate resource bundle (and therefore, the appropriate set of messages to be displayed) is automatically selected by Spring, based on the end user's locale. If the display language setting is English, then the messages_en.properties file will be used. If the language is French then the messages_fr.properties file will be used, and so on.

If a file is not available for a language, or a message within a file cannot be found (for example, navigation.back in messages_en.properties has been commented out), then Spring will fall back to using the entries in messages.properties .

The same JSP page can now be displayed in Engish or French.

English
Hello World Application in English

French
Hello World Application in French

Tip - change the language preferences in your browser to access the different resource bundles for the application.

Formatting

In addition to Spring's <spring:message> tag, we also use the JSTL <fmt:formatNumber> and <fmt:formatDate> tags to display numbers and dates.

A number that is displayed as 999,999,999 in English is displayed as 999 999 999 in French, and dates displayed as Mon dd, yyyy in English are displayed as dd mon. yyyy in French. Month names and their abbreviations are also converted to the appropriate language.

http://levelup.lishman.com/spring/getting-started/internationalization.php