關於An association from the table refers to an unmapped class
2,檢查你的hibernate.cfg.xml檔案中的相關聯的兩個<mapping resource=""/>的順序，可能有其中一個需要引用另一個，但是另一個卻還沒有編譯，就是說被用作外來鍵的表要放在前面
3,檢查你的*.hbm.xml檔名是否正確
4, 檢查你的*.hbm.xml裡面類全名
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