校园外卖服务系统SSM框架代码示例 - Spring+Spring MVC+MyBatis

"以下是一个简单的校园外卖服务系统的代码示例，使用SSM（Spring+Spring MVC+MyBatis）框架进行设计和开发。\n\n1. 实体类代码：\n\njava\\n// 用户实体类\\npublic class User {\\n private int id;\\n private String name;\\n private String email;\\n // 省略getter和setter方法\\n}\\n\\n// 餐厅实体类\\npublic class Restaurant {\\n private int id;\\n private String name;\\n private String location;\\n // 省略getter和setter方法\\n}\\n\\n// 订单实体类\\npublic class Order {\\n private int id;\\n private User user;\\n private Restaurant restaurant;\\n private String dish;\\n // 省略getter和setter方法\\n}\\n\n\n2. DAO接口和Mapper文件代码：\n\njava\\n// 用户DAO接口\\npublic interface UserDao {\\n User getUserById(int userId);\\n void addUser(User user);\\n void updateUser(User user);\\n void deleteUser(int userId);\\n List<User> getAllUsers();\\n}\\n\\n// 餐厅DAO接口\\npublic interface RestaurantDao {\\n Restaurant getRestaurantById(int restaurantId);\\n void addRestaurant(Restaurant restaurant);\\n void updateRestaurant(Restaurant restaurant);\\n void deleteRestaurant(int restaurantId);\\n List<Restaurant> getAllRestaurants();\\n}\\n\\n// 订单DAO接口\\npublic interface OrderDao {\\n Order getOrderById(int orderId);\\n void addOrder(Order order);\\n void updateOrder(Order order);\\n void deleteOrder(int orderId);\\n List<Order> getAllOrders();\\n}\\n\\n// 用户Mapper文件\\n<mapper namespace=\"com.example.dao.UserDao\">\\n <select id=\"getUserById\" parameterType=\"int\" resultType=\"com.example.entity.User\">\\n SELECT * FROM user WHERE id = #{userId}\\n </select>\\n <!-- 省略其他方法的映射语句 -->\\n</mapper>\\n\\n// 餐厅Mapper文件\\n<mapper namespace=\"com.example.dao.RestaurantDao\">\\n <select id=\"getRestaurantById\" parameterType=\"int\" resultType=\"com.example.entity.Restaurant\">\\n SELECT * FROM restaurant WHERE id = #{restaurantId}\\n </select>\\n <!-- 省略其他方法的映射语句 -->\\n</mapper>\\n\\n// 订单Mapper文件\\n<mapper namespace=\"com.example.dao.OrderDao\">\\n <select id=\"getOrderById\" parameterType=\"int\" resultType=\"com.example.entity.Order\">\\n SELECT * FROM order WHERE id = #{orderId}\\n </select>\\n <!-- 省略其他方法的映射语句 -->\\n</mapper>\\n\n\n3. Service接口和实现类代码：\n\njava\\n// 用户Service接口\\npublic interface UserService {\\n User getUserById(int userId);\\n void addUser(User user);\\n void updateUser(User user);\\n void deleteUser(int userId);\\n List<User> getAllUsers();\\n}\\n\\n// 餐厅Service接口\\npublic interface RestaurantService {\\n Restaurant getRestaurantById(int restaurantId);\\n void addRestaurant(Restaurant restaurant);\\n void updateRestaurant(Restaurant restaurant);\\n void deleteRestaurant(int restaurantId);\\n List<Restaurant> getAllRestaurants();\\n}\\n\\n// 订单Service接口\\npublic interface OrderService {\\n Order getOrderById(int orderId);\\n void addOrder(Order order);\\n void updateOrder(Order order);\\n void deleteOrder(int orderId);\\n List<Order> getAllOrders();\\n}\\n\\n// 用户Service实现类\\n@Service\\npublic class UserServiceImpl implements UserService {\\n @Autowired\\n private UserDao userDao;\\n \\n // 省略其他方法的实现\\n}\\n\\n// 餐厅Service实现类\\n@Service\\npublic class RestaurantServiceImpl implements RestaurantService {\\n @Autowired\\n private RestaurantDao restaurantDao;\\n \\n // 省略其他方法的实现\\n}\\n\\n// 订单Service实现类\\n@Service\\npublic class OrderServiceImpl implements OrderService {\\n @Autowired\\n private OrderDao orderDao;\\n \\n // 省略其他方法的实现\\n}\\n\n\n4. 控制器代码：\n\njava\\n@Controller\\n@RequestMapping(\"/order\")\\npublic class OrderController {\\n @Autowired\\n private OrderService orderService;\\n \\n @RequestMapping(\"/getOrder\")\\n public String getOrderById(@RequestParam(\"orderId\") int orderId, Model model) {\\n Order order = orderService.getOrderById(orderId);\\n model.addAttribute(\"order\", order);\\n return \"order\";\\n }\\n \\n // 省略其他控制器方法\\n}\\n\n\n以上是一个简单的校园外卖服务系统的代码示例，使用SSM框架进行设计和开发。在实际开发中，还需要配置Spring和MyBatis的配置文件，以及编写前端页面等。