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                [TOC] # 簡介 ![](https://box.kancloud.cn/4a23a90f91831e6eaf43d119208d03e9_819x120.png) Hb框架使用cglib代理生成代理對象.代理對象是繼承被代理對象.如果被final修飾就無法使用 # 瞬時狀態(transient) ![](https://box.kancloud.cn/975222227798517ada73157f73c86a30_839x115.png) # 持久態(persistent) ![](https://box.kancloud.cn/c628093789237f64690b7a526aac6d98_832x90.png) oid就是數據庫主鍵 用hb,表必須有主鍵,沒有主鍵用不了 # 脫管態(detached) ![](https://box.kancloud.cn/128d9f11c47af7870dae994de682a775_826x91.png) # 區分對象的三種狀態 ~~~ @Test public void fun2() { Session session = HibernateUtils.openSession(); Transaction tx = session.beginTransaction(); // 瞬時狀態沒有持久化表示oid,沒有被session管理 Customer customer = new Customer(); customer.setCust_name("老王"); // 持久化對象:有持久化表示oid,被session管理 Serializable id = session.save(customer); tx.commit(); session.close(); // 托管狀態,有持久化表示oid,沒有被session管理 System.out.println(customer); } ~~~ ![](https://box.kancloud.cn/0c94f868ec5a8114e51b13c99f02342b_824x110.png) # 轉換 ![](https://box.kancloud.cn/00d00fece4cd6f3a28842c2309fcd60b_828x626.png) ![](https://box.kancloud.cn/cb9c0028c228626560ccb93488f7c415_836x379.png) ![](https://box.kancloud.cn/5ddee6ddf323160701546051074a9f27_839x372.png) ![](https://box.kancloud.cn/f6b050bb977ab52629f58ab36faad4ff_518x384.png) # 結論 ![](https://box.kancloud.cn/e4f01ea827afa86bc646f8c69d3315a1_844x569.png) # 自動更新數據庫 ![](https://box.kancloud.cn/baef51ec6caf0bec9eeb334a9f487f2b_825x544.png)
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