摘要： 今天报了这个异常，这是页面报的org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.控制台报18:52:35,859 ERROR SqlExceptionHelper:147 - Cannot delete or update a parent row: a foreign key constraint fails (`zl_cms`.`t_chann 阅读全文