spring-jpa通过自定义sql执行修改碰到的问题

在编写自定义SQL的时候需要注意

• @Query 注解只能用来查询，想要进行添加、修改和删除操作需要配合 @Modifying 注解一同使用

    @Modifying
    @Query("update AdminUser set username=:#{#adminUser.username},password=:#{#adminUser.password} where id=:#{#adminUser.id}")
    int updateInfoById(@Param("adminUser") AdminUser adminUser);
  
  
  

  否则执行会报错错误信息如下，提示不支持修改操作

  org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.hql.internal.QueryExecutionRequestException: Not supported for DML operations [update com.leimo.module.adminuser.entity.AdminUser set username=:__$synthetic$__1,password=:__$synthetic$__2,updateTime=:__$synthetic$__3 where id=:__$synthetic$__4]; nested exception is java.lang.IllegalStateException: org.hibernate.hql.internal.QueryExecutionRequestException: Not supported for DML operations [update com.leimo.module.adminuser.entity.AdminUser set username=:__$synthetic$__1,password=:__$synthetic$__2,updateTime=:__$synthetic$__3 where id=:__$synthetic$__4]
  at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:370) ~[spring-orm-5.1.6.RELEASE.jar:5.1.6.RELEASE]
  at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:255) ~[spring-orm-5.1.6.RELEASE.jar:5.1.6.RELEASE]
  at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:527) ~[spring-orm-5.1.6.RELEASE.jar:5.1.6.RELEASE]
  
  
  

• 只是添加了 @Modifying 注解在执行修改操作的时候仍然会报错，提示在进行删除和修改的时候需要给方法加上事务

  org.springframework.dao.InvalidDataAccessApiUsageException: Executing an update/delete query; nested exception is javax.persistence.TransactionRequiredException: Executing an update/delete query
  at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:402) ~[spring-orm-5.1.6.RELEASE.jar:5.1.6.RELEASE]
  at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:255) ~[spring-orm-5.1.6.RELEASE.jar:5.1.6.RELEASE]
  at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:527) ~[spring-orm-5.1.6.RELEASE.jar:5.1.6.RELEASE]
  
  
  

  在可以直接在Repository的修改接口上添加 @org.springframework.transaction.annotation.Transactional 注解就可以正常执行修改语句了，或者在调用改接口的方法上添加 @Transactional 事务注解即可

    @Transactional
    @Modifying
    @Query("update AdminUser set username=:#{#adminUser.username},password=:#{#adminUser.password} where id=:#{#adminUser.id}")
    int updateInfoById(@Param("adminUser") AdminUser adminUser);
  
  
  

  参考博客
  
  https://www.jianshu.com/p/9d5bf0e4943f

原文地址：https://blog.csdn.net/qq_33430083/article/details/90445618

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