java - jpa删除错误，同时打印更新sql

Question

当我使用 JPA delete 时，出现错误。我查看日志，发现一条更新SQL，我不知道为什么执行删除，但它打印了更新SQL

java 1.8，spring-data-jpa-2.1.8

源代码:

cardApplyRepository.delete(CardApply.builder().activityId(23443L).build());

日志:

2019-07-15 13:09:20.478 [main] INFO  o.s.t.w.s.TestDispatcherServlet [initServletBean:546]     - Completed initialization in 19 ms
Hibernate: 
    insert 
    into
        t_card_apply
        (activity_id, activity_name, app_id, card_base_required_id, card_id, mass_msg_id, seller_id) 
    values
        (?, ?, ?, ?, ?, ?, ?)
2019-07-15 13:09:20.573 [main] WARN  o.h.e.j.s.SqlExceptionHelper [logExceptions:137]     - SQL Error: 1048, SQLState: 23000
2019-07-15 13:09:20.574 [main] ERROR o.h.e.j.s.SqlExceptionHelper [logExceptions:142]     - Column 'card_base_required_id' cannot be null

org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement

    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:296)
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:253)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:527)
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61)
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:153)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:138)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
    at com.sun.proxy.$Proxy206.delete(Unknown Source)
    at com.geek.icem.wechat.service.impl.WxCardServiceImplTest.deleteCard(WxCardServiceImplTest.java:34)

Answer 1

当您将实体传递给 delete 方法时，此时应该对其进行管理。

例如，使用 findById 方法并将结果传递给 delete。

您在动态构建时传递一个非托管实体。

因此，要么先获取一个，要么使用 deleteById 方法。