spring-jpa implementation problems encountered by modifying custom sql

When writing custom SQL needs attention

• @QueryAnnotations can only be used to query, you want to add, modify and delete operations need to meet the @Modifyingannotations used with

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

  Otherwise, execution will be given the following error message, suggesting that the operation can not be modified

  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]
  
       
       
  

• Just add @Modifyingannotations will still be an error in the implementation of the modification operation, delete, and modify prompts during the time required to add transaction method

  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]
  
       
       
  

  In can be added directly on the modification of the interface Repository @org.springframework.transaction.annotation.Transactionaladd annotations on the method can perform normal modification statements, or in the call to change the interface of @Transactionalthe transaction to comment

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

  Reference blog
  https://www.jianshu.com/p/9d5bf0e4943f

Original Address: https: //blog.csdn.net/qq_33430083/article/details/90445618