我是Hibernate的新手。我正在尝试编写一个方法,该方法将插入或更新50条记录,然后提交它&然后再次继续插入。堆栈跟踪: com.follett.fd.exception.UniversityWithSimilarAdoptionException: Could not commit Hibernate transaction; nested exception is org.hibernate.TransactionException: Transaction not successfully started