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org.springframework.session 

spring-session-data-redis

@configuration

@enableautoconfiguration

@componentscan

public class localeconfig extends webmvcconfigureradapter { 

@bean 

public localeresolver localeresolver() { 

sessionlocaleresolver slr = new sessionlocaleresolver(); // 默认语言 slr.setdefaultlocale(locale.china); return slr; } 

@bean 

public localechangeinterceptor localechangeinterceptor() { 

localechangeinterceptor lci = new localechangeinterceptor(); // 参数名 lci.setparamname("lang"); return lci; } 

@override 

public void addinterceptors(interceptorregistry registry) {

 registry.addinterceptor(localechangeinterceptor()); 

}

}

// i18n 

@requestmapping("/")

 public string i18n() { return "i18n"; } 

@requestmapping("/changesessionlanauage")

 public string changesessionlanauage(httpservletrequest request, httpservletresponse response, string lang){ 

     system.out.println(lang);

     localeresolver localeresolver = requestcontextutils.getlocaleresolver(request); 

    if("zh".equals(lang)){

          localeresolver.setlocale(request, response, new locale("zh", "cn")); 

    }else if("en".equals(lang)){ 

          localeresolver.setlocale(request, response, new locale("en", "us")); 

    } 

   return "redirect:/";

 }