主要字段说明：
pid：指导记录主键
user_pid：用户主键
competition_project_pid：用户作品
Mysql表
Repository
/**
* 指导记录
* @date 2020/3/24 9:26
*/
@Repository
public interface CompetitionProjectGuideRepository extends JpaRepository<CompetitionProjectGuide, String> {
Optional<CompetitionProjectGuide> findFirstByCompetitionProjectPidOrderByUpdateAtDesc(Long pid);
}
Service
public Optional<CompetitionProjectGuide> findFirstByCompetitionProjectPidOrderByUpdateAtDesc(Long pid) {
return repository.findFirstByCompetitionProjectPidOrderByUpdateAtDesc(pid);
}
Controller
@RequestMapping(method = {RequestMethod.GET}, value = "/task/project/guide")
public ResponseEntity getGuide(Long pid) {
Optional<CompetitionProjectGuide> guide = competitionProjectGuideService.findFirstByCompetitionProjectPidOrderByUpdateAtDesc(pid);
guide.orElseThrow(() -> new BusinessException(
HttpStatus.BAD_REQUEST, Translator.toLocale("guide.NotExists.message")));
return ResponseEntity.ok(guide);
}
postman测试
控制台
总结
可以通过findFirst或者findTop来获取
