Spring JPA调用时报错InvalidDataAccessResourceUsageException: could not extract ResultSet错误,详细如下:org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nest
2020.03.31 23:32
集成Spring JPA,在执行delete,update时需要添加事务。错误信息:org.springframework.dao.InvalidDataAccessApiUsageException: Executing an update/delete query; nested exception is javax.persistence.TransactionRequiredExcepti
2020.03.31 23:29
在一个Spring JPA项目中,执行更新或删除是报错:Not supported for DML operations解决方法:只需要添加注解@Modifying即可。@Modifying@Query(value = "update User user set user.address = :address where user.id = :id ")void updateUserAddress
2020.03.31 11:10
使用jdbc连接MySQL,如果连接失效,可能会报类似的错误:com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 84,371,623 milliseconds ago. The last packet sent suc
2018.04.18 16:07