纯模式下的GraalVM Quarkus语言环境

You can call the endpoint : http://localhost:8080/api/localescurl http://localhost:8080/api/locales此端点返回很多语言环境:This endpoint return a lot of locales 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,"ar_IQ","nyn","yue","jmc","en_MW","naq_NA","mk","en_IO","ar_QA","en_DE","pa__#Arab","en_CC","bs","ro_MD","en_FI","pt_PT","fy","az_AZ_#Cyrl","th","dav_KE","ckb_IQ","shi_MA_#Latn","es_CU","ar","en_SC","en_VI","haw","eu_ES","en_UG","en_NZ","dje","es_UY","bas","mas_KE","ru_UA","sg_CF","el_GR","yav_CM","uz__#Latn","sg","da_GL","en_FJ","de_LI","en_BB","km_KH","smn_FI","hr_BA","de_AT","ckb_IR","nl","lu_CD","ca_ES_VALENCIA","ar_001","so_SO","lv_LV","ckb","es_CR","fr_GA","ar_KW","sr","ar_LY","sr_RS_#Cyrl","bem","en_MU","da","wae","gl_ES","en_IM","az_AZ_#Latn","en_LS","ig","en_HK","en_GI","ce_RU","en_CA","gd","ka_GE","fr_SY","sw_TZ","fr_RW","so_ET","nl_BE","ar_DJ","mg_MG","cy_GB","en_VG","cu","os_RU","sr_RS_#Latn","en_TC","ky_KG","sv_AX","af_NA","vun","en_IN","lu","ki","yo","es_NI","nb","ff_MR","sd_PK","mas_TZ","ti","kok","ewo","ms_BN","ccp_IN","br_FR"]如果我在纯模式下做同样的事情:If I do the same in native mode :mvn clean package -Pnative && ./target/QuarkusLocale-1.0-SNAPSHOT-runner我仅获得一种语言环境:I obtain only one locale :["fr_US"]如何获取所有可用的语言环境?How can I obtain all available locale ?此外，由于这种行为，我还有另一个问题.如您所见，我是否尝试开发想要使用语言环境的服务.语言环境未使用，我无法应用货币格式.为了证明这一点，我开发了CurrencyController. Moreover, because of this behavior I have another problem. As you can see if I tried to develop a service who want use locale. Locale is not use and I can't apply currency format. To demonstrate that, I develop CurrencyController. @Path("/currency")public class CurrencyController { @POST @Produces(MediaType.APPLICATION_JSON) @Consumes(MediaType.APPLICATION_JSON) public String get(String localeString) { String[] localeArray = localeString.split("-"); Locale locale = new Locale(localeArray[0], localeArray[1]); NumberFormat numberFormat = NumberFormat.getCurrencyInstance(locale); numberFormat.setCurrency(Currency.getInstance("USD")); return numberFormat.format(1337); }}您可以使用curl来调用它:You can call it with curl :curl -X POST http://localhost:8080/api/currency -H "Content-Type: application/json" -d "en-GB"> US$1,337.00curl -X POST http://localhost:8080/api/currency -H "Content-Type: application/json" -d "en-US> $1,337.00如果我在纯模式下做同样的事情:If I do the same in native mode :curl -X POST http://localhost:8080/api/currency -H "Content-Type: application/json" -d "en-GB"> US$1,337.00curl -X POST http://localhost:8080/api/currency -H "Content-Type: application/json" -d "en-US> US$1,337.00在GraalVM版本19.3.1 CE上运行Quarkus本机图像插件 Quarkus 1.4.1.Final 推荐答案这是非常 GraalVM上的已知问题.当前，绕过它的唯一方法是创建将在运行时扫描所有语言环境的功能:This is a very well-known issue on GraalVM. Currently, the only way to bypass it is to create Feature that will scan all locales at run time:添加Maven依赖项 <dependency> <groupId>org.graalvm.nativeimage</groupId> <artifactId>svm</artifactId> <version>19.3.1</version> </dependency>创建要素类package org.example;import com.oracle.svm.core.annotate.AutomaticFeature;import org.graalvm.nativeimage.ImageSingletons;import org.graalvm.nativeimage.hosted.Feature;import org.graalvm.nativeimage.impl.RuntimeClassInitializationSupport;import java.util.Locale;@AutomaticFeaturepublic class NativeLanguageFeature implements Feature { @Override public void beforeAnalysis(BeforeAnalysisAccess access) { ImageSingletons.lookup(RuntimeClassInitializationSupport.class).initializeAtBuildTime(SupportedLocales.class, "__"); final Locale[] availableLocales = Locale.getAvailableLocales(); final SupportedLocales supportedLocales = new SupportedLocales(); supportedLocales.locales = availableLocales; ImageSingletons.add(SupportedLocales.class, supportedLocales); } public static class SupportedLocales { public Locale[] locales; }}在您要访问区域设置的地方，检查ImageSingletons 中是否存在SupportedLocalesIn a place where you want to access locales, check if SupportedLocales present in ImageSingletons @GET @Produces(MediaType.APPLICATION_JSON) public Locale[] get() { if(ImageSingletons.contains(NativeLanguageFeature.SupportedLocales.class)){ final NativeLanguageFeature.SupportedLocales lookup = ImageSingletons.lookup(NativeLanguageFeature.SupportedLocales.class); return lookup.locales; } return Locale.getAvailableLocales(); }您可能还需要用钱做同样的事情.You probably will need to do same thing with money as well. 这篇关于纯模式下的GraalVM Quarkus语言环境的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！