Java 如何在Microronaut中将 map 读取为 map

在Micronaut中，您可以使用@EachProperty批注将一组属性映射到List

在本例中，您也许可以创建一个名为GatewayString的Bean，并使用@EachProperty

@EachProperty("myapp.mapping.mappings")
public class GatewayString{
    private String from;
    private String to;

   public String getFrom() {
    return from;
   }

   public void setFrom(String from) {
    this.from = from;
   }

   public String getTo() {
    return to;
   }

   public void setTo(String to) {
    this.to = to;
   }
}

然后你可以在你的服务中使用它

@Singleton
public class MappingService {
   private final boolean mappingEnabled;
   private final List<GatewayString> mappings;

   public MappingService(
        @Value("${myapp.mapping.enabled}") boolean mappingEnabled,
        List<GatewayString> mappings
   ) {
    this.mappingEnabled = mappingEnabled;
    this.mappings = mappings;
   }

   public String mapValue(String key) {
    if (mappingEnabled) {
        return mappings.stream()
            .filter(mapperString ->mapperString.getFrom().equals(key))
            .map(MapperString::getTo).findFirst().orElseThrow(() -> new RuntimeException("Key not found"));
    } else {
        return key; // Mapping is disabled, return the original key
    }
}
}

此外，您还可以查看此答案Micronaut: How do I map all the properties values in HashMap?