java – 无法在Spring Data Repository中创建自定义查询方法

参见英文答案 > How to add custom method to Spring Data JPA                                    11个
我想创建自定义存储库：

public interface FriendRepositoryCustom {

    Page<Friend> findFriends(FriendCriteria friendCriteria, Pageable pageable);
}

它的实施：

@Repository
@Transactional(readOnly = true)
public class FriendRepositoryCustomImpl implements FriendRepositoryCustom {

    @PersistenceContext
    EntityManager entityManager;

    @Override
    public Page<Friend> findFriends(FriendCriteria friendCriteria, Pageable pageable) {
    ...
    }

并将其添加到主存储库：

@Repository
public interface FriendRepository extends JpaRepository<Friend, Long>, JpaSpecificationExecutor<Friend>, FriendRepositoryCustom {

}

当我启动应用程序时,我收到此错误：

Caused by:
org.springframework.data.mapping.PropertyReferenceException: No
property findFriends found for type Friend! at
org.springframework.data.mapping.PropertyPath.(PropertyPath.java:77)
at
org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:329)
at
org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:309)
at
org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:272)
at
org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:243)
at
org.springframework.data.repository.query.parser.Part.(Part.java:76)
at
org.springframework.data.repository.query.parser.PartTree$OrPart.(PartTree.java:247)
at
org.springframework.data.repository.query.parser.PartTree$Predicate.buildTree(PartTree.java:398)
at
org.springframework.data.repository.query.parser.PartTree$Predicate.(PartTree.java:378)
at
org.springframework.data.repository.query.parser.PartTree.(PartTree.java:86)
at
org.springframework.data.jpa.repository.query.PartTreeJpaQuery.(PartTreeJpaQuery.java:70)
… 43 common frames omitted

解决方法:

您可能错误地命名了您的实现类.

请注意,命名期望随Spring Data 2.0而变化.

对于< 2.0必须将实现命名为具有附加Impl后缀的最终存储库接口. See the matching reference documentation for an example.

对于> = 2.0,必须将实现命名为具有附加Impl后缀的自定义接口. See the current reference documentation for an example.

注意：您不需要任何@Repository注释.

标签：jhipster,java,spring-boot,spring-data-jpa,hibernate
来源： https://codeday.me/bug/20190929/1830927.html