休眠会话保存方法不起作用？

Question

我是春季新人，冬眠。我有一个无法正常工作的示例项目。当我尝试保存来自用户的新订单时，没有任何错误或异常，但是记录未插入数据库。 这是我的代码 strong text StoreController.java

@Autowired
    OrderService orderService;

@SuppressWarnings("unchecked")
        @RequestMapping(value = "/store/addorder", method = RequestMethod.GET)
        public ModelAndView addOrder(HttpSession session) {

            ModelAndView model = new ModelAndView();

            // create list of products that we have to add in orders
            List<CartItem> items = (List<CartItem>) session.getAttribute("cart");
            Set<CartItem> itemsSet = new HashSet<CartItem>();

            // new order generated and setter methods invoke
            Orders order = new Orders(itemsSet);
            Date d = new Date();
            Date delivery = StoreUtils.deliveryDate(d, 3);
            order.setOrderDate(d);
            order.setDeliveryDate(delivery);
            order.setItems(itemsSet);

            for (CartItem cartItem : items) {
                itemsSet.add(cartItem);
            }

            String addOrders = orderService.addOrders(order);
            System.err.println("new order add status " + addOrders + "-------------");
            // change product quantity after adding new order

            if (!addOrders.toLowerCase().contains("error")) {

                for (int i = 0; i < items.size(); i++) {
                    Integer qSale = items.get(i).getQuantity() * (-1);
                    productService.rechargeProduct(items.get(i).getProduct(), qSale);
                }
                model.setViewName("successorder");
                model.addObject("order", order);
                model.addObject("message", addOrders);
                session.setAttribute("cart", null);
            } else {
                session.setAttribute("error", addOrders);
                model.setViewName("redirect:/addtocartlist");
            }
            return model;
        }

Orders.java

@Entity
@Table(name = "orders")
public class Orders implements Serializable {

    private static final long serialVersionUID = -3672662224925418969L;

    @Id
    @Column(name = "orderid", nullable = false)
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @DateTimeFormat(pattern = "yyyy-mm-dd")
    @Column(name = "orderDate", nullable = false)
    private Date orderDate;

    @DateTimeFormat(pattern = "yyyy-mm-dd")
    @Column(name = "delivery", nullable = false)
    private Date deliveryDate;

    @Column(name = "success", nullable = true, columnDefinition = "tinyint(1) default 0")
    private boolean success;

    @Column(name = "cancel", nullable = true, columnDefinition = "tinyint(1) default 0")
    private boolean canceled;

    @Column(name = "cause", nullable = true)
    private String cancelCause;

    @ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @JoinTable(name = "ORDERS_ITEMS", joinColumns = { @JoinColumn(name = "orderid") }, inverseJoinColumns = {
            @JoinColumn(name = "item_id") })
    private Set<CartItem> items = new HashSet<CartItem>(0);
//setters and getters
}

CartItem.java

@Entity
@Table(name = "items")
public class CartItem implements Serializable {

    private static final long serialVersionUID = 7968604053015663078L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "item_id", nullable = false)
    private Long id;

    @Column(name = "quantity", nullable = false, columnDefinition = "int(11) default 1")
    private Integer quantity;

    @Column(name = "totalprice", nullable = false)
    private BigDecimal totalprice;

    @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @JoinColumn(name = "prd_id", nullable = false)
    private Product product;
//setters and getters
}

Product.java

@Entity
@Table(name = "products")
public class Product implements Serializable {

    private static final long serialVersionUID = -7738539408628995177L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "prd_id")
    private Long id;

    @Column(name = "full_name", nullable = false)
    private String fullName;

    @Column(name = "seller_name")
    private String seller;

    @Column(name = "company_name", nullable = false)
    private String companyName;

    @Column(name = "created_date")
    @DateTimeFormat(pattern = "yyyy-mm-dd")
    private Date createdDate;

    @Column(name = "expiry_date")
    @DateTimeFormat(pattern = "yyyy-mm-dd")
    private Date expiryDate;

    @Column(name = "insert_date")
    @DateTimeFormat(pattern = "yyyy-mm-dd")
    private Date insertDate;

    @Column(name = "likes", nullable = true)
    private Integer likeCount;

    @Column(name = "quantity", nullable = true)
    private Integer quantity;

    @Column(name = "price", nullable = false)
    private BigDecimal price;

    @Column(name = "category", nullable = false)
    private String category;

    @Column(name = "description", nullable = true)
    private String description;

    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "product")
    private Set<CartItem> items;

//setters and getters
}

最后是我的doa实现代码

OrdersDaoImpl.java

@Repository("ordersDao")
public class OrdersDaoImpl implements OrdersDao {

    @Autowired
    SessionFactory sessionFactory;

    protected Session session() {
        try {
            return sessionFactory.getCurrentSession();
        } catch (HibernateException e) {
            return sessionFactory.openSession();
        }
    }

    public String addOrders(Orders orders) {
        String result = "";

        try {
            session().save(orders);
            result = "success";

        } catch (Exception e) {
            if (e.getMessage().toLowerCase().contains("duplicate"))
                result = "error this  order already was exist";
            else
                result = "error " + e.getMessage();
            System.err.println(result);

        } finally {
            session().clear();
        }
        return result;
    }
}

当我尝试添加新订单时，我没有例外。为什么我的服务不起作用？ 我的项目中还有另一个控制器来管理用户。在该控制器和dao实现中，添加和删除用户工作正常。 我认为我的代码中存在一对多和多对多的逻辑错误。请帮助我克服这种失败。