解決a different object with the same identifier value was already associated with the session錯誤 .
：a different object with the same identifier value was alrea ...
原文：a different object with the same identifier value was already associated with the session
這個問題,我把對象賦值為NULL,也是很好用的.在我的系統中,更新好用了,可是插入不好用了.沒改前,是插入好用,而更新不好用.本來是系統中的問題,可是,catch只是捕捉到,從但是,沒有把log打印出來,找原因實在是難找.在高度數據庫時,最好把異常捕捉中的信息打印出來.org.springframework.orm.hibernate.HibernateSystemException: a dif ...
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