[英]Spring Boot, Hibernate validator language based on LocaleContextHolder
I've a Spring Boot 2.4.2 REST application using JPA, Hibernate, etc. So far I use a MessageSource
for applications errors (located in i18n/messages), and the default ValidationMessages
for bean validations.
这是我的配置的一部分:
public static Set<Locale> LOCALES = Set.of(new Locale("en"), new Locale("it"));
@Bean
public LocaleResolver localeResolver() {
SmartLocaleResolver localeResolver = new SmartLocaleResolver();
return localeResolver;
}
public class SmartLocaleResolver extends AcceptHeaderLocaleResolver {
@Override
public Locale resolveLocale(HttpServletRequest request) {
if (StringUtils.isBlank(request.getHeader("Accept-Language"))) {
return Locale.getDefault();
}
List<Locale.LanguageRange> list = Locale.LanguageRange.parse(request.getHeader("Accept-Language"));
Locale locale = Locale.lookup(list, LOCALES);
return locale;
}
}
@Primary
@Bean("messageSource")
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setAlwaysUseMessageFormat(true);
messageSource.setBasenames("classpath:/i18n/messages");
// set to true only for debugging
messageSource.setUseCodeAsDefaultMessage(false);
messageSource.setFallbackToSystemLocale(false);
return messageSource;
}
到目前为止,我的应用程序支持 2 种语言: it和en 。 现在的问题是应用程序的消息在代理的语言(浏览器)中正确本地化,但验证错误不是。
我发现 Hibernate 使用默认语言环境 (Locale.getDefault()) 并自定义行为我应该自定义语言环境分辨率。
所以我尝试创建一个自定义 hibernateValidator(我在我的 entityFactory 中设置):
@Bean
public MessageSource validationMessageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setAlwaysUseMessageFormat(true);
messageSource.setBasenames("classpath:/ValidationMessages");
// set to true only for debugging
messageSource.setUseCodeAsDefaultMessage(false);
messageSource.setFallbackToSystemLocale(false);
return messageSource;
}
@Bean("hibernateValidator")
public LocalValidatorFactoryBean hibernateValidator() {
LocalValidatorFactoryBean factoryBean = new LocalValidatorFactoryBean();
factoryBean.setValidationMessageSource(validationMessageSource());
return factoryBean;
}
和解析器:
public class HibernateLocaleResolver implements LocaleResolver {
@Override
public Locale resolve(LocaleResolverContext context) {
return LocaleContextHolder.getLocale();
}
}
这样做,语言环境解析工作正常,但参数替换不行。 我的意思是这样的消息:
server.validators.ArraySize.message = The number of values must be between [{min}] and [{max}].
我有一个例外:
"exception": "java.lang.IllegalArgumentException", "message": "can't parse argument number: min"
所以我更改了上面的配置,添加了 MessageInterpolator:
factoryBean.setMessageInterpolator(new ResourceBundleMessageInterpolator(LOCALES, Locale.ENGLISH, new HibernateLocaleResolver(), false));
此时参数已正确解析,但语言环境解析再次不起作用。
你能指出我正确的方向,试图解释组合 Spring 引导 - Hibernate 验证器的最佳实践吗?
我解决了这个问题。 我希望这可以帮助别人。 这是我的配置文件:
@Primary
@Bean("messageSource")
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setAlwaysUseMessageFormat(true);
messageSource.setBasenames("classpath:/i18n/messages");
// set to true only for debugging
messageSource.setUseCodeAsDefaultMessage(false);
messageSource.setFallbackToSystemLocale(false);
return messageSource;
}
@Bean
public MessageSource validationMessageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setAlwaysUseMessageFormat(true);
messageSource.setBasenames("classpath:/ValidationMessages");
// set to true only for debugging
messageSource.setUseCodeAsDefaultMessage(false);
messageSource.setFallbackToSystemLocale(false);
return messageSource;
}
@Bean
public LocalValidatorFactoryBean validator() {
LocalValidatorFactoryBean factoryBean = new LocalValidatorFactoryBean();
factoryBean.setValidationMessageSource(validationMessageSource());
MessageInterpolatorFactory interpolatorFactory = new MessageInterpolatorFactory();
factoryBean.setMessageInterpolator(interpolatorFactory.getObject());
return factoryBean;
}
和 LocaleConfiguration:
@Configuration
public class LocaleConfiguration implements WebMvcConfigurer {
@Bean
public LocaleResolver localeResolver() {
SmartLocaleResolver localeResolver = new SmartLocaleResolver();
return localeResolver;
}
public class SmartLocaleResolver extends AcceptHeaderLocaleResolver {
@Override
public Locale resolveLocale(HttpServletRequest request) {
if (StringUtils.isBlank(request.getHeader("Accept-Language"))) {
return Locale.getDefault();
}
List<Locale.LanguageRange> list = Locale.LanguageRange.parse(request.getHeader("Accept-Language"));
Locale locale = Locale.lookup(list, Constants.LOCALES);
return locale;
}
}
}
我看到的重要部分有所不同的是以下几行:
MessageInterpolatorFactory interpolatorFactory = new MessageInterpolatorFactory();
factoryBean.setMessageInterpolator(interpolatorFactory.getObject());
通过这种方式,插值器可以正常工作以及消息的本地化。
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