/**
* 添加订单，并返回订一个单号
*
* @param order 一个订单
* @return int 返回一个整型的订单号
*/
public int addOrder(Order order) {
int orderId = 0;
PreparedStatement pstmt_order = null; // 用于对订单进行操作的预定义语句
PreparedStatement pstmt_item = null; // 用于对订单项进行操作的预定义语句
ResultSet rs = null;
DbUtil dbUtil = null;
String sql_order = "insert into tb_order values(null,?,?,?,?,?,null,?)";
try {
// 事物处理
dbUtil = new DbUtil();
dbUtil.getCon().setAutoCommit(false);
// 将订单中的数据录入数据库
pstmt_order = dbUtil.getCon().prepareStatement(sql_order);
pstmt_order.setString(1, order.getUser().getName());
pstmt_order.setString(2, order.getUser().getAddress());
pstmt_order.setString(3, order.getRecvName());
pstmt_order.setString(4, order.getUser().getPostcode());
pstmt_order.setString(5, order.getUser().getEmail());
pstmt_order.setInt(6, order.getFlag());
pstmt_order.executeUpdate();
rs = pstmt_order.getGeneratedKeys(); // 取得主键
rs.next();
orderId = rs.getInt(1); // 返回一个订单号
// 将订单项中的数据录入数据库
String sql_item = "insert into tb_orderItem values(null,?,?,?,?,?)";
pstmt_item = dbUtil.getCon().prepareStatement(sql_item);
List orderItem = order.getOrderItem(); // 得到所有订单项
for (int i = 0; i < orderItem.size(); i++) {
OrderItem orderItems = (OrderItem) orderItem.get(i);
pstmt_item.setInt(1, orderId);
pstmt_item.setInt(2, orderItems.getBookId());
pstmt_item.setString(3, orderItems.getBookName());
pstmt_item.setFloat(4, orderItems.getPrice());
pstmt_item.setInt(5, orderItems.getBookNum());
pstmt_item.addBatch();
}
pstmt_item.executeBatch();
dbUtil.getCon().commit();
} catch (SQLException e) {
e.printStackTrace();
try {
dbUtil.getCon().rollback();
} catch (SQLException e1) {
e1.printStackTrace();
}
} finally {
try {
rs.close();
pstmt_order.close();
pstmt_item.close();
dbUtil.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return orderId;
}
// 根据订单号查订单项
public List selectOrderItem(int id) {
List list = new ArrayList();
OrderItem ordetrItem = null;
DbUtil dao = new DbUtil();
PreparedStatement pre = null;
ResultSet re = null;
String sql = "select * from tb_orderItem where orderId = ? ";
try {
pre = dao.getCon().prepareStatement(sql);
pre.setInt(1, id);
re = pre.executeQuery();
while (re.next()) {
ordetrItem = new OrderItem();
ordetrItem.setBookId(re.getInt("bookId"));
ordetrItem.setBookName(re.getString("bookName"));
ordetrItem.setBookNum(re.getInt("bookNum"));
ordetrItem.setOrderId(re.getInt("orderId"));
ordetrItem.setOrderItemId(re.getInt("orderItemId"));
ordetrItem.setPrice(re.getFloat("price"));
list.add(ordetrItem);
}
} catch (Exception e) {
}
return list;
}