Question

我在spring-boot应用程序中使用来自spring-hateoas的ResourceAssemblerSupport

我已经创建了如下汇编程序：

public class MemberResourceAssembler extends ResourceAssemblerSupport<Member, MemberResource>{

    public MemberResourceAssembler(Class<?> controllerClass, Class<MemberResource> resourceType) {
        super(controllerClass, resourceType);
    }
    @Override
    public MemberResource toResource(Member member) {
        MemberResource memberResource=new MemberResource();
        memberResource.setStatus(member.getStatus());
        memberResource.setHeight(member.getHeight());
        memberResource.setIs_veg(member.getIs_veg());
        memberResource.setRace(member.getRace());
        memberResource.setWeight(member.getWeight());
        return memberResource;
    }

}

和资源类如下：

public class MemberResource extends ResourceSupport implements Serializable{
//relevant code here
}

域类如下：

@Document(collection="Member")
public class Member {
//relevant code here
}

存储库类如下：

public interface MemberRepository extends PagingAndSortingRepository<Member,Integer> {

    Page<Member> findByStatusContainsIgnoreCase(@Param("q") String status, Pageable pageable);
}

现在我想在我的控制器中使用如下：

@RestController
@RequestMapping("/members")
public class MemberController {
     @Autowired
    private MemberRepository memberRepository;

     @Autowired
    private MemberResourceAssembler assembler;

    @RequestMapping(value = "/search", method = RequestMethod.GET)
    public PagedResources<MemberResource> search(@RequestParam("status") String status, @PageableDefault Pageable pageable,
            PagedResourcesAssembler<Member> pagedAssembler) {
         Page<Member> members = memberRepository.findByStatusContainsIgnoreCase(status, pageable);
         return pagedAssembler.toResource(members, assembler);   
    }

}

我得到以下异常：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.sg.resources.MemberResourceAssembler] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

使用spring-hateoas版本0.19.0.RELEASE.All的依赖关系来自Spring Boot 1.3.0的启动器.RELEASE

Controller类的父包中有一个spring boot Application类。存储库上的Autowire注释工作正常。

Answer 1

您的free(3)应注明为MemberResourceAssembler，以便将其用于自动装配。

Answer 2

我在Application.class中添加了一个bean定义来解决问题

    @SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Bean
    public MemberResourceAssembler memberResourceAssembler() {
        return new MemberResourceAssembler(MemberController.class, MemberResource.class);
    }
}

Spring Resource Assembler抛出NoSuchBeanDefinitionException

2 个答案: