如何从JHipster弹簧控制器中检索仓库？

Question

我有一个JHipster微服务应用，我已经添加了一个spring控制器。但是，它的生成没有存储库，我不知道如何检索它来执行数据任务。

这是代码。

@RestController
@RequestMapping("/api/data")
public class DataResource {

    private final Logger log = LoggerFactory.getLogger(DataResource.class);
    private final DeviceRepository deviceRepository;

    public DataResource() {
    }

    /**
    * GET global
    */
    @GetMapping("/global")
    public ResponseEntity<GlobalStatusDTO[]> global() {

        List<Device> list=deviceRepository.findAll();
        GlobalStatusDTO data[]=new GlobalStatusDTO[]{new GlobalStatusDTO(list.size(),1,1,1,1)};
        return ResponseEntity.ok(data);
    }

}

EDIT：我需要注入一个已经存在的仓库，这里是初始化仓库的CRUD部分。

@RestController
@RequestMapping("/api")
@Transactional
public class DeviceResource {

    private final Logger log = LoggerFactory.getLogger(DeviceResource.class);

    private static final String ENTITY_NAME = "powerbackDevice";

    @Value("${jhipster.clientApp.name}")
    private String applicationName;

    private final DeviceRepository deviceRepository;

    public DeviceResource(DeviceRepository deviceRepository) {
        this.deviceRepository = deviceRepository;
    }

    /**
     * {@code POST  /devices} : Create a new device.
     *
     * @param device the device to create.
     * @return the {@link ResponseEntity} with status {@code 201 (Created)} and with body the new device, or with status {@code 400 (Bad Request)} if the device has already an ID.
     * @throws URISyntaxException if the Location URI syntax is incorrect.
     */
    @PostMapping("/devices")
    public ResponseEntity<Device> createDevice(@Valid @RequestBody Device device) throws URISyntaxException {
...

Answer 1

我可能误解了你的意思，但你的第一段代码没有工作，因为，你没有注入以下代码。DeviceRepository 由构造函数注入。当然，还有其他的注入方法。

@RestController
@RequestMapping("/api/data")
public class DataResource {

    private final Logger log = LoggerFactory.getLogger(DataResource.class);
    private final DeviceRepository deviceRepository;

    //changes are here only, constructor method of injection
    public DataResource(DeviceRepository deviceRepository) {
      this.deviceRepository = deviceRepository; 
    }

    /**
    * GET global
    */
    @GetMapping("/global")
    public ResponseEntity<GlobalStatusDTO[]> global() {

        List<Device> list=deviceRepository.findAll();
        GlobalStatusDTO data[]=new GlobalStatusDTO[]{new GlobalStatusDTO(list.size(),1,1,1,1)};
        return ResponseEntity.ok(data);
    }

}