之前已经问了一次,但解决方案没有解决问题。我正在创建一个JUnit测试:
@Test
@Transactional
@Modifying
public void updateMaterialInventory() throws Exception{
// Initialize the database
materialRepository.saveAndFlush(material);
long id = material.getId();
materialRepository.updateMaterialInventory(id,UPDATED_INVENTORY_COUNT);
assertEquals(material.getInventory_count(), UPDATED_INVENTORY_COUNT, 0);
}
以上测试的查询是:
@Query("UPDATE Material m SET m.inventory_count = ?2 WHERE m.id = ?1")
void updateMaterialInventory(Long id,int newInventoryAmount);
错误:
Caused by: org.hibernate.hql.internal.QueryExecutionRequestException: Not supported for DML operations [UPDATE com.htd.domain.Material m SET m.inventory_count = ?2 WHERE m.id = ?1]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.errorIfDML(QueryTranslatorImpl.java:318)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:369)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:231)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1264)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103)
at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:573)
at org.hibernate.jpa.internal.QueryImpl.getSingleResult(QueryImpl.java:495)
... 55 more
答案 0 :(得分:74)
@Modifying
注释必须放在updateMaterialInventory
方法上,同时放在@Query
注释中,让Spring数据知道查询不是用于选择值的查询,但要更新值。
答案 1 :(得分:1)
据我了解,您不应在存储库类中使用@Transactional
注释。找到以下答案。
服务Impl类
import org.springframework.transaction.annotation.Transactional;
...
@Test
@Transactional
public void updateMaterialInventory() throws Exception{
// Initialize the database
materialRepository.saveAndFlush(material);
long id = material.getId();
materialRepository.updateMaterialInventory(id,UPDATED_INVENTORY_COUNT);
assertEquals(material.getInventory_count(), UPDATED_INVENTORY_COUNT, 0);
}
存储库类
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
...
@Modifying
@Query("UPDATE Material m SET m.inventory_count = ?2 WHERE m.id = ?1")
void updateMaterialInventory(Long id,int newInventoryAmount);
确保使用正确的导入。希望这很有帮助。
答案 2 :(得分:1)
@Transactional
@Modifying
@Query(DELETE_INVOICE_BY_NUMBER)
public void deleteInvoiceByNumber(@Param("number") int number);
这对我有用,但是在存储库类中没有@Transactional时,它会给出错误。