弹簧数据的JPA @query和分页

Question

我使用Spring数据JPA，当我使用@Query来定义查询WITHOUTPageable，它的工作原理：

public interface UrnMappingRepository extends JpaRepository<UrnMapping, Long> { 
    @Query(value = "select * from internal_uddi where urn like %?1% or contact like %?1%", 
      nativeQuery = true) 
    List<UrnMapping> fullTextSearch(String text); 
} 

但是，如果我添加第二参数Pageable,@Query将不起作用，Spring将解析该方法的名称，然后抛出例外No property full found。这是一个错误？

public interface UrnMappingRepository extends JpaRepository<UrnMapping, Long> { 
    @Query(value = "select * from internal_uddi where urn like %?1% or contact like %?1%", 
      nativeQuery = true) 
    Page<UrnMapping> fullTextSearch(String text, Pageable pageable); 
} 

Answer 1

类似的问题是asked on the Spring forums，它指出，申请分页，第二子查询必须的。由于子查询引用的是相同的字段，因此您需要确保查询对引用的实体/表使用别名。这意味着，如果你写：

select * from internal_uddi where urn like 

而应该有：

select * from internal_uddi iu where iu.urn like ... 

Answer 2

重写查询到：

select iu from internal_uddi iu where iu.urn.... 

描述：http://forum.spring.io/forum/spring-projects/data/126415-is-it-possible-to-use-query-and-pageable?p=611398#post611398

Answer 3

考虑到UrnMapping类映射到internal_uddi表，我建议这样的：

@Repository 
public interface UrnMappingRepository extends JpaRepository<UrnMapping, Long> { 

    @Query(value = "select iu from UrnMapping iu where iu.urn like %:text% or iu.contact like %:text%") 
    Page<UrnMapping> fullTextSearch(@Param("text") String text, Pageable pageable); 
} 

请注意，您可能必须使用动态请求关闭本机查询。

Answer 4

您可以使用本机查询分页。这是记录在这里：https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#jpa.query-methods.at-query

“但是，您可以通过指定计数查询自己使用分页机查询： 例51.申报分页本地计数查询的查询方法使用@Query”

public interface UserRepository extends JpaRepository<User, Long> { 

    @Query(value = "SELECT * FROM USERS WHERE LASTNAME = ?1", 
    countQuery = "SELECT count(*) FROM USERS WHERE LASTNAME = ?1", 
    nativeQuery = true) 
    Page<User> findByLastname(String lastname, Pageable pageable); 
}