实现删除的接口的，调用deleteOneById 是没问题的，但是用自定义的函数就出问题了，有道友帮我看看是哪里出问题了？代码如下

（感觉没有啥地方跟大锯个的代码不一样）

错误提示为下面

[org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[dispatcherServlet]] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Executing an update/delete query; nested exception is javax.persistence.TransactionRequiredException: Executing an update/delete query] with root cause

javax.persistence.TransactionRequiredException: Executing an update/delete query