如何在Spring数据JPA中的@Query中传递多个查询参数？

Question

我在我的存储库中使用nativeQuery ，它使用连接从多个表中获取数据，它还检查用户在查询中发送的输入。 我的Repository层看起来像：

@Query(
  value = "SELECT e.empname,c.countryName,r.RegionName
  FROM Employee e,Country c, Region r
  WHERE e.countryId=c.countryId
  AND c.regionId=r.regionId
  AND e.employeeId IN (:empIds)
  AND c.countryId IN (:countryIds)
  AND r.regionId IN (:regionIds)", 
  nativeQuery = true)
Collection<Object> findAllActiveUsersNative(CustomFilterRequest request,Pageable pageable);

以下是我的过滤器Class ，它们是从 UI 发送的 ID 列表，并且应该将 class 的列表属性发送到查询以进行进一步过滤。

class CustomFilterRequest{
List<Long> empIds,
List<Long> countryIds,
List<Long> regionIds,
}

我知道有@Param可用于发送单个查询参数，但如何发送多个查询参数，如上述场景？ 有没有办法让这个 class 的 map 属性在nativeQuery的@Query中查询参数？

Answer 1

如果您不强制将整个 CustomFilterRequest object 作为单个参数传递，那么以下如何？

@Query(
  value = "SELECT e.empname,c.countryName,r.RegionName
  FROM Employee e,Country c, Region r
  WHERE e.countryId=c.countryId
  AND c.regionId=r.regionId
  AND e.employeeId IN :empIds
  AND c.countryId IN :countryIds
  AND r.regionId IN :regionIds", 
  nativeQuery = true)
Collection<Object> findAllActiveUsersNative(
  @Param("empIds") List<Long> empIds,
  @Param("countryIds") List<Long> countryIds,
  @Param("regionIds") List<Long> regionIds,
  Pageable pageable);

然后为您服务 class：

repository.findAllActiveUsersNative(
  customFilterRequest.getEmpIds(),
  customFilterRequest.getCountryIds(),
  customFilterRequest.getRegionIds(),
  pageable);

Answer 2

您可以使用SpEL 表达式。

  @Query(
      value = "SELECT e.empname,c.countryName,r.RegionName
      FROM Employee e,Country c, Region r
      WHERE e.countryId=c.countryId
      AND c.regionId=r.regionId
      AND e.employeeId IN (:#{#request.empIds})
      AND c.countryId IN (:#{#request.countryIds})
      AND r.regionId IN (:#{#request.regionIds})", 
      nativeQuery = true)
    Collection<Object> findAllActiveUsersNative(CustomFilterRequest request,Pageable pageable);