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## org.springframework.web.servlet
Interface LocaleResolver

All Known Implementing Classes:
  AbstractLocaleResolver, AcceptHeaderLocaleResolver, CookieLocaleResolver, FixedLocaleResolver, SessionLocaleResolver

    public interface LocaleResolver

Interface for web-based locale resolution strategies that allows for both locale resolution via the request and locale modification via request and response.

This interface allows for implementations based on request, session, cookies, etc. The default implementation is AcceptHeaderLocaleResolver, simply using the request's locale provided by the respective HTTP header.

Use `RequestContext.getLocale()` to retrieve the current locale in controllers or views, independent of the actual resolution strategy.

Since:
  27.02.2003
Author:
  Juergen Hoeller
See Also:
  `AcceptHeaderLocaleResolver`, `RequestContext.getLocale()`

Method Summary
`java.util.Locale` | `resolveLocale(javax.servlet.http.HttpServletRequest request)` Resolve the current locale via the given request.
`void` | `setLocale(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.util.Locale locale)` Set the current locale to the given one.

Method Detail

### resolveLocale

    java.util.Locale resolveLocale(javax.servlet.http.HttpServletRequest request)

  Resolve the current locale via the given request. Should return a default locale as fallback in any case.

  Parameters:
    `request` - the request to resolve the locale for
  Returns:
    the current locale (never `null`)

### setLocale

    void setLocale(javax.servlet.http.HttpServletRequest request,
                   javax.servlet.http.HttpServletResponse response,
                   java.util.Locale locale)

  Set the current locale to the given one.

  Parameters:
    `request` - the request to be used for locale modification
    `response` - the response to be used for locale modification
    `locale` - the new locale, or `null` to clear the locale
  Throws:
    `java.lang.UnsupportedOperationException` - if the LocaleResolver implementation does not support dynamic changing of the theme

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