刚开始以为是数据库中的表有问题，主键的字段不能为空，结果给它赋值了还是不行，再一看数据库中有些非空的字段没有设值，又改了
一下表的结构，允许为空，结果还是报错。再一想是不是因为实体类实现了序列化的原因
时间： 2024-10-02 11:31:58
使用JPA保存对象时报nested exception is javax.persistence.RollbackException: Transaction marked as rollbackOnly错误
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