LocaleContextHolder.getLocale()で、デフォルトのロケールを取得できます。 package com.sample.config; import org.springframework.context.i18n.LocaleContextHolder; import org.springframework.context.support.ResourceBundleMessageSource; import org.springframework.stereotype.Component; import java.util.HashMap; import java.util.Locale; import java.util.Map; import java.util.ResourceBundle; @Component public class MyMessage
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