錯誤長相：
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APPLICATION FAILED TO START
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Description:
Parameter 0 of method linkDiscoverers in org.springframework.hateoas.config.HateoasConfiguration required a single bean, but 17 were found:
...
此錯誤可現於 Swagger + HATEOAS 項目中。解決方法是添加 LinkDiscoverers 的 bean：
@Bean
public LinkDiscoverers discoverers() {
List<LinkDiscoverer> plugins = new ArrayList<>();
plugins.add(new CollectionJsonLinkDiscoverer());
return new LinkDiscoverers(SimplePluginRegistry.create(plugins));
}