Query注解及方法限制

Posted 2020-10-26 1斑点

repository仓库 public interface PersonRepository extends Repository<Person,Integer>{   //根据lastName来获取对应的Person Person getByLastName(String lastName);     //WHERE lastName LIKE ?% AND id < ? List<Person> getByLastNameStartingWithAndIdLessThan(String lastName,Integer id);   //WHERE lastName LIKE %? AND id<? List<Person> getByLastNameEndingWithAndIdLessThan(String lastName,Integer id);   //WHERE email IN(?,?,?) OR birth <? List<Person> getByEmailInOrBirthLessThan(List<String> emails,Date birth);   //WHERE a.id>?     List<Person> getByAddressIdCreaterThan(Integer id);  //getByAddress_IdCreaterThan(Integer id);        //查询id值最大的那个Person     //使用@Query注解可以自定义JPQL语句以实现更灵活的查询     @Query("SELECT p FROM Person p WHERE p.id=(SELECT max(p.id) FROM Person p2)")     Person getMaxIdPerson();          //[email protected]注解传递参数的方式1，使用占位符     @Query("SELECT p FROM Person p WHERE p.lastName=?1 AND p,email =?2")     List<Person> testQueryAnnotationParam1(String lastName,String email);          //2.位Query注解传递参数的方式2:命名参数的方式     @Query("SELECT p FROM Person p WHERE p.lastName= :lastName AND p.email=:email")     List<Person> testQueryAnnotationParams2(@Param("email")String email,@Param("lastName")String lastName);         //SpringData 允许在占位符上添加 %%.  @Query("SELECT p FROM Person p WHERE p.lastName LIKE %?1% OR p.email LIKE %?2%") List<Person> testQueryAnnotationLikeParam(String lastName, String email);   //SpringData 允许在占位符上添加 %%.  @Query("SELECT p FROM Person p WHERE p.lastName LIKE %:lastName% OR p.email LIKE %:email%") List<Person> testQueryAnnotationLikeParam2(@Param("email") String email, @Param("lastName") String lastName);   //设置 nativeQuery=true 即可以使用原生的 SQL 查询 @Query(value="SELECT count(id) FROM jpa_persons", nativeQuery=true) long getTotalCount(); }