如何在Spring Websocket中为@Header值创建自定义转换器/反序列化器

Question

我有一个Websocketendpoint，我想作为头值接收它，不是字符串，而是对象。

    @MessageMapping("/gather/{resource}")
    fun emitGatherEvent(@DestinationVariable resource: String, @Header context: Context) {     
        LOG.debug("gather endpoint called for client ${context.clientId} and character ${context.characterId} with resource '$resource'")
        eventDispatcher.dispatchEvent(Gather(resource), context.characterId)
    }

org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [java.lang.String] to type [@org.springframework.messaging.handler.annotation.Header com.barbarus.gameserver.websocket.Context]

你知道怎么做吗？

Answer 1

您可以通过formatterregistry执行此操作

@Configuration
public class YourConfig implements WebMvcConfigurer{
 @Override
    public void addFormatters(FormatterRegistry registry) {
     registry.addConverter(new YourCustomConverter());
    }
}

}