apollo-adminservice/src/main/java/com/ctrip/framework/apollo/adminservice/controller/ReleaseController.java/ReleaseController/findReleaseByIds
class ReleaseController:  @GetMapping("/releases")
  public List<ReleaseDTO> findReleaseByIds(@RequestParam("releaseIds") String releaseIds) {
    Set<Long> releaseIdSet = RELEASES_SPLITTER.splitToList(releaseIds).stream().map(Long::parseLong)
        .collect(Collectors.toSet());

    List<Release> releases = releaseService.findByReleaseIds(releaseIdSet);

    return BeanUtils.batchTransform(ReleaseDTO.class, releases);
  }