Null return value from advice does not match primitive return type for
下面是我的dao層 應該是自動拆箱的時出現的問題，把int換成 Integer 包裝類就行了，如果還報空指針的錯誤，就加個null判空。 完！ ...
原文：Null return value from advice does not match primitive
Exception in thread main org.springframework.aop.AopInvocationException: Null return value from advice does not match primitive return type for: public int com.fanling.xmlaop.UserDaoImpl.addUser com. ...
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