###struts模型驅動(必須new)可以封裝【對象類型屬性的屬性】.頁面傳參錯誤致使的問題：HTTP Status 500 - could not execute statement;

問題詳情：html HTTP Status 500 - could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement type Excep

>>阅读原文<<