Java Spring@Autowired不工作-至少需要1个符合Autowired候选条件的bean
我正在使用Java14和SpringBoot2.4.0-SNAPSHOT 我有一个资源,在其中我尝试自动连接Java Spring@Autowired不工作-至少需要1个符合Autowired候选条件的bean,java,spring,spring-boot,Java,Spring,Spring Boot,我正在使用Java14和SpringBoot2.4.0-SNAPSHOT 我有一个资源,在其中我尝试自动连接approvalRequestService ApprovalRequestResource.java @RestController public class ApprovalRequestResource { @Autowired ApprovalRequestService approvalRequestService; @Service public inter
approvalRequestService
ApprovalRequestResource.java
@RestController
public class ApprovalRequestResource {
@Autowired
ApprovalRequestService approvalRequestService;
@Service
public interface ApprovalRequestService {
List<ApprovalRequestDTO> getApprovalRequests(String token);
}
public class ApprovalRequestServiceImpl implements ApprovalRequestService {
@Autowired
ApprovalRequestDAO approvalRequestDAO;
@Autowired
CompanyContactService companyContactService;
@Autowired
JwtTokenUtil jwtTokenUtil;
@Override
public List<ApprovalRequestDTO> getApprovalRequests(String jwtToken) {
这是一个接口:
ApprovalRequestService.java
@RestController
public class ApprovalRequestResource {
@Autowired
ApprovalRequestService approvalRequestService;
@Service
public interface ApprovalRequestService {
List<ApprovalRequestDTO> getApprovalRequests(String token);
}
public class ApprovalRequestServiceImpl implements ApprovalRequestService {
@Autowired
ApprovalRequestDAO approvalRequestDAO;
@Autowired
CompanyContactService companyContactService;
@Autowired
JwtTokenUtil jwtTokenUtil;
@Override
public List<ApprovalRequestDTO> getApprovalRequests(String jwtToken) {
您必须将@Service注释放在实现中,而不是接口中
public interface ApprovalRequestService {
List<ApprovalRequestDTO> getApprovalRequests(String token);
}
@Service
public class ApprovalRequestServiceImpl implements ApprovalRequestService {
公共接口ApprovalRequestService{
列出getApprovalRequests(字符串令牌);
}
@服务
公共类ApprovalRequestServiceImpl实现ApprovalRequestService{
您好,有意思,可能是autoscan问题?谢谢您的回答。当我尝试将@Service
注释移动到实现时,我在实现中遇到编译错误,我有@Autowired ApprovalRequestDAO ApprovalRequestDAO;
-无法自动连线。没有'ApprovalRequestDAO'类型的beannd.
ApprovalRequestDAO类是否需要一个注释来定义它是什么?我已经尝试将@Bean
添加到ApprovalRequestDAO
中,但它得到了以下错误:“@Bean”不适用于类型
嗨,Simon,我让它工作起来了,谢谢。我需要对实现进行注释,我.e.通过将@Repository
添加到DAO。因此您的答案是正确的,@Service
注释需要在实现上,而不是在接口上。