先看看效果圖：
1.sql
①t_orderitem一個外鍵
bname:方便后期book刪除
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CREATE TABLE `t_orderitem` ( `orderItemId` char(32) NOT NULL, `quantity` int(11) DEFAULT NULL, `subtotal` decimal(8,2) DEFAULT NULL, `bid` char(32) DEFAULT NULL, `bname` varchar(200) DEFAULT NULL, `currPrice` decimal(8,2) DEFAULT NULL, `image_b` varchar(100) DEFAULT NULL, `oid` char(32) DEFAULT NULL, PRIMARY KEY (`orderItemId`), KEY `FK_t_orderitem_t_order` (`oid`), CONSTRAINT `FK_t_orderitem_t_order` FOREIGN KEY (`oid`) REFERENCES `t_order` (`oid`)) ENGINE=InnoDB DEFAULT CHARSET=utf8; insert into `t_orderitem`(`orderItemId`,`quantity`,`subtotal`,`bid`,`bname`,`currPrice`,`image_b`,`oid`) values ('01D2DF3E5BB34E9F9D2477180C8D94D3',1,'74.50','CE01F15D435A4C51B0AD8202A318DCA7','Java編程思想（第4版）','74.50','book_img/9317290-1_b.jpg','C0841F4DFE7A43BFB183E4E82AE7914C'); |
②t_order一個外鍵
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CREATE TABLE `t_order` ( `oid` char(32) NOT NULL, `ordertime` char(19) DEFAULT NULL, `total` decimal(10,2) DEFAULT NULL, `status` int(11) DEFAULT NULL, `address` varchar(1000) DEFAULT NULL, `uid` char(32) DEFAULT NULL, PRIMARY KEY (`oid`), KEY `FK_t_order_t_user` (`uid`), CONSTRAINT `FK_t_order_t_user` FOREIGN KEY (`uid`) REFERENCES `t_user` (`uid`)) ENGINE=InnoDB DEFAULT CHARSET=utf8; insert into `t_order`(`oid`,`ordertime`,`total`,`status`,`address`,`uid`) values ('058F48DA33694C6D8F5C2C13F3D26CEA','2013-12-26 21:47:04','95.30',1,'李女士 廣東省 揭陽市 揭東縣 xxx xxx xxx','32DB3700D2564254982BC58B0E4D95BC'); |
2.bean
①OrderItem
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public class OrderItem { private String orderItemId;//主鍵 private int quantity;//數量 private double subtotal;//小計 private Book book;//所關聯的Book private Order order;//所屬的訂單 |
②Order
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public class Order { private String oid;//主鍵 private String ordertime;//下單時間 private double total;//總計 private int status;//訂單狀態：1未付款, 2已付款但未發貨, 3已發貨未確認收貨, 4確認收貨了交易成功, 5已取消(只有未付款才能取消) private String address;//收貨地址 private User owner;//訂單的所有者 private List<OrderItem> orderItemList; |
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
