使用JPA中@Query 注解实现update 操作 spring使用jpa进行update操作主要有两种方式: 1、调用保存实体的方法 1)保存一个实体:repository.save(T entity) 2)保存多个实体:repository.save(Iterable<T> entities) 3)保存并立即刷新一个实体:repository.saveAndFlush(T entity) 注:若是更改,entity中必须设置了主键字段,不...
再看一下repository 接口的实现类SimpleJpaRepository的源码(只摘了部分源码): 1@Repository2@Transactional(3readOnly =true4)5publicclassSimpleJpaRepository<T, ID>implementsJpaRepositoryImplementation<T, ID>{67@Transactional8publicvoiddeleteById(ID id) {9Assert.notNull(id, "The given id must not be nu...
@Modifying@Query("update User u set u.firstname = ?1 where u.lastname = ?2")intsetFixedFirstnameFor(Stringfirstname,Stringlastname); 首先让人奇怪的是,repository method只能返回int或者转为void,因为这个操作只会把数据写入到数据库,但是不会select。 执行完modifying query, EntityManager可能会包含过时...
1@Repository2publicinterfaceUserRepositoryextendsJpaRepository<User,Long>{34//父类的保存方法5@Override6User save(User entity);78//按照JPA语法规则自定义的查询方法9List<User>findFirst10ByLastname(String lastName, Pageable pageable);10} 第四句话的意思是,当加上@Modifying注解时,JPA会以更新类语句来执行...
import org.springframework.data.repository.NoRepositoryBean; import org.springframework.lang.Nullable; import com.yb.fw.core.helper.Condition; @NoRepositoryBean //表示该接口不会创建这个接口的实例 public interface BaseRepository<T, ID extends Serializable> extends JpaRepository<T, ID>, JpaSpecification...
java jpa 注解自定义Update jpa常用注解,@Query注解在spring-data-jpa中可用来定制自定义sql语句的数据库增删改查操作,使用起来也是非常方便1.1源码分析@Retention(RetentionPolicy.RUNTIME)@Target({ElementType.METHOD,ElementType.ANNOTATION_TYPE})@QueryAnnotation@D
@Transactional public Result methodA(Long id) { Result result = new Result(); WorkOrderEntity entity1 = workOrderRepository.findById(id).get(); //更新前对象的status是1, workOrderRepository.updateWorkOrderStatus(id, 2); // entity.setOrderStatus(OrderStatusEnum.FINISHED.getCode()); // workOrder...
updateUserById(user); } @RequestMapping(value = "insertUser",method = RequestMethod.POST) public int insertUser(User user) { return userService.insertUser(user); } @RequestMapping(value = "deleteUserById/{id}",method = RequestMethod.DELETE) public int deleteUserById(@PathVariable int id) {...
*/userRepository.saveAndFlush(user); 批量更新的话,就调用entityManager的merge函数来更新. 首先在service层获取持久化管理器: @PersistenceContextprivate EntityManager em; 批量更新方法,同理插入,删除也都可以如此做. @TransactionalpublicvoidbatchUpateCustom(List<User>users){// TODO Auto-generated method stubfor(...
Spring Data CustomerRepository interface public interface CustomerRepository extends Repository<Customer, Long> { Customer save(Account account); Customer findByEmailAddress(String emailAddress); } The save(…) method will be backed by the generic SimpleJpaRepository class that implements all CRUD ...