CREATE TABLE user (
id VARCHAR(40) PRIMARY KEY,
username VARCHAR(20) NOT NULL,
cellphone VARCHAR(20) NOT NULL,
address VARCHAR(40) NOT NULL,
email VARCHAR(30),
password VARCHAR(30) NOT NULL
);
编写DAO
/**
* 用户的登录注册模块
* 1：登陆
* 2：注册
* 3：根据id查找具体的用户
*/
public class UserDaoImpl {
public void register(User user) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql = "INSERT INTO user (id,username,cellphone,address,email,password) VALUES(?,?,?,?,?,?)";
try {
queryRunner.update(sql, new Object[]{user.getId(),user.getUsername(), user.getCellphone(), user.getAddress(), user.getEmail(), user.getPassword()});
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
public User login(String username, String password) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql = "SELECT * FROM user WHERE username = ? AND password=?";
try {
return (User) queryRunner.query(sql, new Object[]{username, password}, new BeanHandler(User.class));
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
public User find(String id) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql = "SELECT * FROM user WHERE id=?";
try {
return (User) queryRunner.query(sql, id, new BeanHandler(User.class));
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
}
测试DAO
public class UserDemo {
UserDaoImpl userDao = new UserDaoImpl();
@Test
public void add() {
User user = new User();
user.setId("1");
user.setUsername("zhong");
user.setPassword("123");
user.setCellphone("10085");
user.setAddress("广州萝岗");
user.setEmail("40368324234234@QQ.com");
userDao.register(user);
}
@Test
public void find() {
String id = "1";
User user = userDao.find(id);
System.out.println(user.getEmail());
}
@Test
public void login() {
String username = "zhong";
String password = "123";
User user = userDao.login(username, password);
System.out.println(user.getAddress());
}
}
抽取DAO
public interface UserDao {
void register(User user);
User login(String username, String password);
User find(String id);
}
编写Service
private UserDao userDao = DaoFactory.getInstance().createDao("zhongfucheng.dao.impl.UserDaoImpl", UserDao.class);
public void registerUser(User user) {
userDao.register(user);
}
public User loginUser(String username,String password) {
return userDao.login(username, password);
}
public User findUser(String id) {
return userDao.find(id);
}
CREATE TABLE orders (
id VARCHAR(40) PRIMARY KEY,
date DATE NOT NULL,
user_id VARCHAR(40) NOT NULL,
state BOOLEAN,
price DOUBLE,
CONSTRAINT user_id_FK FOREIGN KEY (user_id) REFERENCES user (id)
);
public class OrderDaoImpl implements zhongfucheng.dao.OrderDao {
@Override
public void addOrder(Order order) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql1 = "INSERT INTO orders(id,ordertime,user_id,state,price) VALUES(?,?,?,?,?)";
try {
//订单的基本信息
queryRunner.update(sql1, new Object[]{order.getId(), order.getOrdertime(), order.getUser_id(), order.isState(), order.getPrice()});
//订单项的信息
String sql2 = "INSERT INTO orderItem(id,price,quantity,order_id,book_id) VALUES(?,?,?,?,?)";
Set items = order.getItems();
for (OrderItem item : items) {
queryRunner.update(sql2, new Object[]{item.getId(), item.getPrice(), item.getQuantity(), item.getOrder_id(), item.getBook_id()});
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
@Override
public Order findOrder(String id) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
Order order;
try {
//找出订单的基本信息
String sql = "SELECT * FROM orders WHERE id=?";
order = (Order) queryRunner.query(sql, new BeanHandler(Order.class), new Object[]{id});
//找出订单的所有订单项
String sql2 = "SELECT * FROM orderItem WHERE order_id=?";
List list = (List) queryRunner.query(sql2, new BeanListHandler(OrderItem.class), new Object[]{order.getId()});
System.out.println("这是数据库拿到的list集合："+list.size());
//将所有订单项装到订单里边
order.getItems().addAll(list);
System.out.println("这是数据库拿到的"+order.getItems().size());
//找出该订单是属于哪一个用户的
String sql3 = "SELECT * FROM orders o,user u WHERE o.user_id=u.id AND o.id=? ";
User user = (User) queryRunner.query(sql3, new BeanHandler(User.class), new Object[]{order.getId()});
order.setUser_id(user.getId());
return order;
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
//更新订单的状态
public void updateState(String id) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql = "UPDATE orders SET state=? WHERE id=?";
try {
queryRunner.update(sql, new Object[]{true, id});
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
//查看已经发货或没发货的订单信息
public List getAllOrder(boolean state) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql = "SELECT * FROM orders WHERE state=? ";
try {
return (List) queryRunner.query(sql, new BeanListHandler(Order.class), new Object[]{state});
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
//通过用户的id查找用户的订单，可能不止一个
public List findUserOrder(String user_id) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql = "SELECT * FROM orders WHERE user_id=? ";
try {
return List queryRunner.query(sql, new BeanHandler(Order.class), new Object[]{user_id});
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
}
public interface OrderDao {
void addOrder(Order order);
Order findOrder(String id);
List getAllOrder(boolean state);
void updateState(String user_id);
List findUserOrder(String user_id);
}
BussinessService
private OrderDao orderDao = DaoFactory.getInstance().createDao("zhongfucheng.dao.impl.OrderDaoImpl", OrderDao.class);
public void createOrder(Cart cart, User user) {
//订单的基本信息
String order_id = WebUtils.makeId();
Order order = new Order();
order.setId(order_id);
order.setPrice(cart.getPrice());
order.setOrdertime(new Date());
order.setState(false);
order.setUser_id(user.getId());
//订单项的基本信息
//得到每个购物项，购物项就作为订单项
for (Map.Entry me : cart.getMap().entrySet()) {
OrderItem orderItem = new OrderItem();
CartItem cartItem = me.getValue();
orderItem.setId(WebUtils.makeId());
orderItem.setPrice(cartItem.getPrice());
orderItem.setBook_id(cartItem.getBook().getId());
orderItem.setQuantity(cartItem.getQuantity());
orderItem.setOrder_id(order_id);
order.getItems().add(orderItem);
}
orderDao.addOrder(order);
}
public Order findOrder(String user_id) {
return orderDao.findOrder(user_id);
}
public List getAllOrder(boolean state) {
return orderDao.getAllOrder(state);
}
public void sendOutOrder(String id) {
orderDao.updateState(id);
}
public List findUserOrder(String user_id) {
return orderDao.findUserOrder(user_id);
}
生成订单的Servlet
BussinessServiceImpl service = new BussinessServiceImpl();
//检查该用户的购物车是否有商品
Cart cart = (Cart) request.getSession().getAttribute("cart");
if (cart == null) {
request.setAttribute("message", "您购物车没有商品，无法生成订单");
request.getRequestDispatcher("/message.jsp").forward(request, response);
return;
}
//如果有商品，得到当前用户
User user = (User) request.getSession().getAttribute("user");
service.createOrder(cart, user);
request.setAttribute("message", "订单已经生成了，准备好钱来收货把");
request.getRequestDispatcher("/message.jsp").forward(request, response);
return;
BussinessServiceImpl service = new BussinessServiceImpl();
String state = request.getParameter("state");
if (state.equals("true")) {
List list = service.getAllOrder(true);
request.setAttribute("list",list);
} else if (state.equals("false")) {
List list = service.getAllOrder(false);
request.setAttribute("list", list);
}
request.getRequestDispatcher("/background/listOrder.jsp").forward(request, response);
BussinessServiceImpl service = new BussinessServiceImpl();
//得到用户想要查看详细信息的表单
String order_id = request.getParameter("order_id");
Order order = service.findOrder(order_id);
//将该order对象给相对应的JSP显示
request.setAttribute("order", order);
request.getRequestDispatcher("/background/listDetail.jsp").forward(request, response);
BussinessServiceImpl service = new BussinessServiceImpl();
String id = request.getParameter("id");
service.sendOutOrder(id);
request.setAttribute("message", "已发货！");
request.getRequestDispatcher("/message.jsp").forward(request, response);
return;
//查找用户的所有权限
public List findUserPrivilege(String user_id) {
QueryRunner queryRunner = new QueryRunner(Utils2DB.getDataSource());
String sql = "SELECT p.* FROM privilege p, user_privilege up WHERE p.id = up.privilege_id AND up.user_id = ?";
try {
return (List) queryRunner.query(sql, new Object[]{user_id}, new BeanListHandler(Privilege.class));
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
抽取到接口上
List findUserPrivilege(String user_id);
注解模块
编写注解
@Retention(RetentionPolicy.RUNTIME)
public @interface permission {
String value();
}
在Service层方法中需要权限的地方添加注解CategoryServiceImpl
@permission("添加分类")
/*添加分类*/
public void addCategory(Category category) {
categoryDao.addCategory(category);
}
/*查找分类*/
public void findCategory(String id) {
categoryDao.findCategory(id);
}
@permission("查找分类")
/*查看分类*/
public List getAllCategory() {
return categoryDao.getAllCategory();
}
