apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/controller/ReleaseController.java/ReleaseController/get
class ReleaseController:  @GetMapping("/releases/{releaseId}")
  public ReleaseDTO get(@PathVariable("releaseId") long releaseId) {
    Release release = releaseService.findOne(releaseId);
    if (release == null) {
      throw new NotFoundException("release not found for %s", releaseId);
    }
    return BeanUtils.transform(ReleaseDTO.class, release);
  }