Spring国际化语言切换不生效

Rover.x2025-11-06 12:38

使用SessionLocaleResolver一致不生效，获取message时候报错：

java.lang.UnsupportedOperationException: Cannot change HTTP accept header - use a different locale resolution strategy

at org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver.setLocale...

org.springframework.web.servlet.i18n.LocaleChangeInterceptor.preHandle...

最终定位到原因，DispatcherServlet读取到的仍然是AcceptHeaderLocaleResolver，注入了但没有生效，问题代码如下：

java 复制代码

@Bean
@Primary
public LocalResolver sessionLocaleResolver() {
     SessionLocaleResolver slr = new SessionLocaleResolver();
     slr.setDefaultLocale(Locale.ENGLISH);
     slr.setDefaultTimeZone(TimeZone.getTimeZone("UTC"));
     return slr;
}

修改后代码如下：

java 复制代码

@Bean("localeResolver")
   @Primary
   public LocalResolver sessionLocaleResolver() {
        SessionLocaleResolver slr = new SessionLocaleResolver();
        slr.setDefaultLocale(Locale.ENGLISH);
        slr.setDefaultTimeZone(TimeZone.getTimeZone("UTC"));
        return slr;
}