我可以告訴spring-boot自動解析查詢參數所請求locale的，例如&lang=en嗎？我想讓查詢參數優先于Accept-Language參數。我發現了以下兩個屬性，但與查詢參數無關。spring.mvc.locale= # Locale to use. By default, this locale is overridden by the "Accept-Language" header.spring.mvc.locale-resolver=accept-header # Define how the locale should be resolved.我嘗試如下，這給出了一個例外：@Configurationpublic class AppConfig extends WebMvcConfigurerAdapter { @Bean public LocaleChangeInterceptor localeChangeInterceptor() { LocaleChangeInterceptor lci = new LocaleChangeInterceptor(); lci.setParamName("lang"); return lci; } @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(localeChangeInterceptor()); }}結果是：java.lang.UnsupportedOperationException: Cannot change HTTP accept header - use a different locale resolution strategy
2 回答
紅糖糍粑
TA貢獻1815條經驗 獲得超6個贊
解決辦法大概如下。我仍然發現設置非常違反直覺。特別是我會期望：
將
LocaleChangeInterceptor自身注冊，但不并有來電addInterceptors()顯該
spring.mvc.locale參數仍然設置到自定義 LocaleResolver 中，但不會并且必須從WebMvcProperties
如果需要所有這些，文檔可能需要對此進行更多解釋。
@Configuration
public class AppConfig extends WebMvcConfigurerAdapter {
@Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
lci.setParamName("lang");
return lci;
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(localeChangeInterceptor());
}
@Bean
public AcceptHeaderLocaleResolver localeResolver(WebMvcProperties mvcProperties) {
AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver() {
@Override
public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {
LocaleContextHolder.setLocale(locale);
}
};
localeResolver.setDefaultLocale(mvcProperties.getLocale());
return localeResolver;
}
}
討論后更新改進版本：
@Configuration
public class AppConfig implements WebMvcConfigurer {
@Bean
public AcceptHeaderLocaleResolver localeResolver(WebMvcProperties mvcProperties) {
AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver() {
@Override
public Locale resolveLocale(HttpServletRequest request) {
String locale = request.getParameter("lang");
return locale != null
? org.springframework.util.StringUtils.parseLocaleString(locale)
: super.resolveLocale(request);
}
};
localeResolver.setDefaultLocale(mvcProperties.getLocale());
return localeResolver;
}
}
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