CODEWITHSUNDEEP
springspring-bootspring-mvcinternationalizationspring-internationalization
hemanth gowda
hemanth gowda

Reputation: 33

spring internalization language change from controller

In spring internalization i'm using this configuration

@Bean
public LocaleResolver localeResolver() {
    //for this demo, we'll use a SessionLocaleResolver object
    //as the name implies, it stores locale info in the session
    SessionLocaleResolver resolver = new SessionLocaleResolver();

    //default to US locale
    resolver.setDefaultLocale(Locale.US);

    //get out
    return resolver;
}


/**
 * This interceptor allows visitors to change the locale on a per-request basis
 * @return a LocaleChangeInterceptor object
 */
@Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
    //instantiate the object with an empty constructor
    LocaleChangeInterceptor interceptor = new LocaleChangeInterceptor();

    //the request param that we'll use to determine the locale
    interceptor.setParamName("lang");

    //get out
    return interceptor;
}


/**
 * This is where we'll add the intercepter object
 * that handles internationalization
 */
@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(localeChangeInterceptor());
}

And I'm able to change languages from html i.e script and its working fine

window.location.replace('?lang=' + selectedOption);

But is there any way that I can change it from a controller because preferred language will be stored inside DB

so language will be fetched and to be set

example 

u = ucr.findByNameContaining(name);
u.getLanguage 
<< i have to set language returned from above line >>

@RequestMapping(value = {"/welcome"}, method = RequestMethod.POST)
public String notificationChannelSearchPost(ModelMap model,HttpSession session
        ,@RequestParam(value="name", defaultValue="") String name) {


     u = ucr.findByNameContaining(name);
     u.getLanguage 
<< i have to set language returned from above line >>
    return "welcom.html";
}

thank you

Upvotes: 3

Views: 2483

Answers (2)

Javad Mahdioun
Javad Mahdioun

Reputation: 340

You can optimize your application by retrieving these settings from the application.yml or application.properties file. This approach eliminates the need to query the database on every request, improving performance and reducing database load.

Here’s an example of handling i18n (internationalization) in a REST API.

enter image description here

Upvotes: 0

Shy Albatross
Shy Albatross

Reputation: 113

You can set the spring Locale manually in Java by doing something like this

LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(request);             
localeResolver.setLocale(request, response,new Locale(u.getLanguage()));

Upvotes: 2

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