java Spring Boot 本地化问题 - Accept-Language 标头
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Spring Boot Localization issue - Accept-Language header
提问by Arun
We are using Spring Boot for the application. In ApplicationConfig.java I have the below code
我们正在为应用程序使用 Spring Boot。在 ApplicationConfig.java 我有下面的代码
@Bean
public LocaleResolver localeResolver() {
return new SmartLocaleResolver();
}
and the SmartLocaleResolver.java is below
和 SmartLocaleResolver.java 在下面
public class SmartLocaleResolver extends SessionLocaleResolver {
@Override
public Locale resolveLocale(HttpServletRequest request) {
final String acceptLanguage = request.getHeader("Accept-Language");
if (acceptLanguage.contains(",")) {
String[] aheader = acceptLanguage.split(",[ ]*");
for (String locale : aheader) {
if (ApplicationConstants.LOCALE.contains(locale)) {
locale.trim();
return Locale.forLanguageTag(locale);
}
}
} else if (!acceptLanguage.contains(",") && !acceptLanguage.isEmpty()) {
if (ApplicationConstants.LOCALE.contains(acceptLanguage)) {
return Locale.forLanguageTag(acceptLanguage);
}
}
return request.getLocale();
}
}
and I have in my constants class the below to compare the value from header Accept-Language.
我在我的常量类中有下面的内容来比较标题 Accept-Language 中的值。
public static final List LOCALE = Collections .unmodifiableList(Arrays.asList("en", "es"));
public static final List LOCALE = Collections .unmodifiableList(Arrays.asList("en", "es"));
I know in actual scenario the header will be like Accept-Language : fr,es;q=0.8,en-us;q=0.6 but for testing purpose i'm passing it as below.
我知道在实际场景中，标题将类似于 Accept-Language : fr,es;q=0.8,en-us;q=0.6 但为了测试目的，我将其传递如下。
Accept-language : fr,es,en
接受语言：fr,es,en
The code is not complete yet, but i'm just testing from postman to see if the code picks up "es" as the locale and gives me the localized result.
代码尚未完成，但我只是从邮递员那里进行测试，看看代码是否选择“es”作为语言环境并为我提供本地化结果。
I don't have messages_fr.properties file but I have messages_es.properties so I expect if the application sets the locale from the below code, it would pick Locale as 'es' and give the values I want in Spanish. What changes I need to make here for the code to work?
我没有messages_fr.properties 文件，但我有messages_es.properties，所以我希望如果应用程序从下面的代码中设置区域设置，它会选择区域设置为“es”并提供我想要的西班牙语值。我需要在此处进行哪些更改才能使代码正常工作？
回答by Arun
The solution is:
解决办法是：
public class SmartLocaleResolver extends AcceptHeaderLocaleResolver
instead of
代替
public class SmartLocaleResolver extends SessionLocaleResolver
Below is the updated code:
以下是更新后的代码：
import javax.servlet.http.HttpServletRequest;
import java.util.List;
import java.util.Locale;
import com.bbtransact.tss.api.commons.http.HttpConstants;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver;
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, ApplicationConstants.LOCALES);
return locale;
}
}
and in my constants class I have:
在我的常量类中，我有：
List<Locale> LOCALES = Arrays.asList(new Locale("en"),
new Locale("es"),
new Locale("fr"),
new Locale("es", "MX"),
new Locale("zh"),
new Locale("ja"));
