Spring HATEOAS HAL响应中缺少"rel“

import org.springframework.hateoas.EntityModel;
import org.springframework.hateoas.Link;
import org.springframework.hateoas.server.mvc.WebMvcLinkBuilder;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api")
public class MyController {

    @GetMapping("/resource")
    public EntityModel<Resource> getResource() {
        Resource resource = new Resource();
        // 设置资源属性

        Link selfLink = WebMvcLinkBuilder.linkTo(MyController.class).slash("resource").withSelfRel();
        resource.add(selfLink);

        Link otherLink = WebMvcLinkBuilder.linkTo(MyController.class).slash("other-resource").withRel("other");
        resource.add(otherLink);

        return EntityModel.of(resource);
    }
}

@Relation(collectionRelation = "resources")
class Resource {
    // 资源属性

    // Getter和Setter方法
}