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Code  ›  LocaleContextHolder (Spring Framework 6.0.10 API)
https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/context/i18n/LocaleContextHolder.html
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1 年前
public final class LocaleContextHolder extends Object
Simple holder class that associates a LocaleContext instance with the current thread. The LocaleContext will be inherited by any child threads spawned by the current thread if the inheritable flag is set to true .

Used as a central holder for the current Locale in Spring, wherever necessary: for example, in MessageSourceAccessor. DispatcherServlet automatically exposes its current Locale here. Other applications can expose theirs too, to make classes like MessageSourceAccessor automatically use that Locale.

Since:
Author:
Juergen Hoeller, Nicholas Williams
See Also:
  • LocaleContext
  • MessageSourceAccessor
  • DispatcherServlet
    • Return the Locale associated with the current thread, if any, or the system default Locale otherwise.
    static Locale
    getLocale ( LocaleContext localeContext)
    Return the Locale associated with the given user context, if any, or the system default Locale otherwise.
    static LocaleContext
    getLocaleContext ()
    Return the LocaleContext associated with the current thread, if any.
    static TimeZone
    getTimeZone ()
    Return the TimeZone associated with the current thread, if any, or the system default TimeZone otherwise.
    static TimeZone
    getTimeZone ( LocaleContext localeContext)
    Return the TimeZone associated with the given user context, if any, or the system default TimeZone otherwise.
    static void
    resetLocaleContext ()
    Reset the LocaleContext for the current thread.
    static void
    setDefaultLocale ( Locale locale)
    Set a shared default locale at the framework level, as an alternative to the JVM-wide default locale.
    static void
    setDefaultTimeZone ( TimeZone timeZone)
    Set a shared default time zone at the framework level, as an alternative to the JVM-wide default time zone.
    static void
    setLocale ( Locale locale)
    Associate the given Locale with the current thread, preserving any TimeZone that may have been set already.
    static void
    setLocale ( Locale locale, boolean inheritable)
    Associate the given Locale with the current thread, preserving any TimeZone that may have been set already.
    static void
    setLocaleContext ( LocaleContext localeContext)
    Associate the given LocaleContext with the current thread, not exposing it as inheritable for child threads.
    static void
    setLocaleContext ( LocaleContext localeContext, boolean inheritable)
    Associate the given LocaleContext with the current thread.
    static void
    setTimeZone ( TimeZone timeZone)
    Associate the given TimeZone with the current thread, preserving any Locale that may have been set already.
    static void
    setTimeZone ( TimeZone timeZone, boolean inheritable)
    Associate the given TimeZone with the current thread, preserving any Locale that may have been set already.

    setLocaleContext

    public static void setLocaleContext ( @Nullable LocaleContext localeContext)
    Associate the given LocaleContext with the current thread, not exposing it as inheritable for child threads.

    The given LocaleContext may be a TimeZoneAwareLocaleContext , containing a locale with associated time zone information.

    Parameters:
    localeContext - the current LocaleContext, or null to reset the thread-bound context
    See Also:
  • SimpleLocaleContext
  • SimpleTimeZoneAwareLocaleContext

    • setLocaleContext

    public static void setLocaleContext ( @Nullable LocaleContext localeContext, boolean inheritable)
    Associate the given LocaleContext with the current thread.

    The given LocaleContext may be a TimeZoneAwareLocaleContext , containing a locale with associated time zone information.

    Parameters:
    localeContext - the current LocaleContext, or null to reset the thread-bound context
    inheritable - whether to expose the LocaleContext as inheritable for child threads (using an InheritableThreadLocal )
    See Also:
  • SimpleLocaleContext
  • SimpleTimeZoneAwareLocaleContext
    • @Nullable public static LocaleContext getLocaleContext ()
    Return the LocaleContext associated with the current thread, if any.
    Returns:
    the current LocaleContext, or null if none
    public static void setLocale ( @Nullable Locale locale)
    Associate the given Locale with the current thread, preserving any TimeZone that may have been set already.

    Will implicitly create a LocaleContext for the given Locale, not exposing it as inheritable for child threads.

    Parameters:
    locale - the current Locale, or null to reset the locale part of thread-bound context
    See Also:
  • setTimeZone(TimeZone)
  • SimpleLocaleContext(Locale)
    • boolean inheritable)
    Associate the given Locale with the current thread, preserving any TimeZone that may have been set already.

    Will implicitly create a LocaleContext for the given Locale.

    Parameters:
    locale - the current Locale, or null to reset the locale part of thread-bound context
    inheritable - whether to expose the LocaleContext as inheritable for child threads (using an InheritableThreadLocal )
    See Also:
  • setTimeZone(TimeZone, boolean)
  • SimpleLocaleContext(Locale)
    • public static void setDefaultLocale ( @Nullable Locale locale)
    Set a shared default locale at the framework level, as an alternative to the JVM-wide default locale.

    NOTE: This can be useful to set an application-level default locale which differs from the JVM-wide default locale. However, this requires each such application to operate against locally deployed Spring Framework jars. Do not deploy Spring as a shared library at the server level in such a scenario!

    Parameters:
    locale - the default locale (or null for none, letting lookups fall back to Locale.getDefault() )
    Since:
    4.3.5
    See Also:
  • getLocale()
  • Locale.getDefault()

    • getLocale

    public static Locale getLocale ()
    Return the Locale associated with the current thread, if any, or the system default Locale otherwise. This is effectively a replacement for Locale.getDefault() , able to optionally respect a user-level Locale setting.

    Note: This method has a fallback to the shared default Locale, either at the framework level or at the JVM-wide system level. If you'd like to check for the raw LocaleContext content (which may indicate no specific locale through null , use getLocaleContext() and call LocaleContext.getLocale()

    Returns:
    the current Locale, or the system default Locale if no specific Locale has been associated with the current thread
    See Also:
  • getLocaleContext()
  • LocaleContext.getLocale()
  • setDefaultLocale(Locale)
  • Locale.getDefault()
    • public static Locale getLocale ( @Nullable LocaleContext localeContext)
    Return the Locale associated with the given user context, if any, or the system default Locale otherwise. This is effectively a replacement for Locale.getDefault() , able to optionally respect a user-level Locale setting.
    Parameters:
    localeContext - the user-level locale context to check
    Returns:
    the current Locale, or the system default Locale if no specific Locale has been associated with the current thread
    Since:
    See Also:
  • getLocale()
  • LocaleContext.getLocale()
  • setDefaultLocale(Locale)
  • Locale.getDefault()
    • public static void setTimeZone ( @Nullable TimeZone timeZone)
    Associate the given TimeZone with the current thread, preserving any Locale that may have been set already.

    Will implicitly create a LocaleContext for the given Locale, not exposing it as inheritable for child threads.

    Parameters:
    timeZone - the current TimeZone, or null to reset the time zone part of the thread-bound context
    See Also:
  • setLocale(Locale)
  • SimpleTimeZoneAwareLocaleContext(Locale, TimeZone)
    • TimeZone timeZone, boolean inheritable)
    Associate the given TimeZone with the current thread, preserving any Locale that may have been set already.

    Will implicitly create a LocaleContext for the given Locale.

    Parameters:
    timeZone - the current TimeZone, or null to reset the time zone part of the thread-bound context
    inheritable - whether to expose the LocaleContext as inheritable for child threads (using an InheritableThreadLocal )
    See Also:
  • setLocale(Locale, boolean)
  • SimpleTimeZoneAwareLocaleContext(Locale, TimeZone)

    • setDefaultTimeZone

    public static void setDefaultTimeZone ( @Nullable TimeZone timeZone)
    Set a shared default time zone at the framework level, as an alternative to the JVM-wide default time zone.

    NOTE: This can be useful to set an application-level default time zone which differs from the JVM-wide default time zone. However, this requires each such application to operate against locally deployed Spring Framework jars. Do not deploy Spring as a shared library at the server level in such a scenario!

    Parameters:
    timeZone - the default time zone (or null for none, letting lookups fall back to TimeZone.getDefault() )
    Since:
    4.3.5
    See Also:
  • getTimeZone()
  • TimeZone.getDefault()

    • getTimeZone

    public static TimeZone getTimeZone ()
    Return the TimeZone associated with the current thread, if any, or the system default TimeZone otherwise. This is effectively a replacement for TimeZone.getDefault() , able to optionally respect a user-level TimeZone setting.

    Note: This method has a fallback to the shared default TimeZone, either at the framework level or at the JVM-wide system level. If you'd like to check for the raw LocaleContext content (which may indicate no specific time zone through null ), use getLocaleContext() and call TimeZoneAwareLocaleContext.getTimeZone() after downcasting to TimeZoneAwareLocaleContext .

    Returns:
    the current TimeZone, or the system default TimeZone if no specific TimeZone has been associated with the current thread
    See Also:
  • getLocaleContext()
  • TimeZoneAwareLocaleContext.getTimeZone()
  • setDefaultTimeZone(TimeZone)
  • TimeZone.getDefault()

    • getTimeZone

    public static TimeZone getTimeZone ( @Nullable LocaleContext localeContext)
    Return the TimeZone associated with the given user context, if any, or the system default TimeZone otherwise. This is effectively a replacement for TimeZone.getDefault() , able to optionally respect a user-level TimeZone setting.
    Parameters:
    localeContext - the user-level locale context to check
    Returns:
    the current TimeZone, or the system default TimeZone if no specific TimeZone has been associated with the current thread
    Since:
    See Also:
  • getTimeZone()
  • TimeZoneAwareLocaleContext.getTimeZone()
  • setDefaultTimeZone(TimeZone)
  • TimeZone.getDefault()
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