add<下单操作>

src/main/java/example/controller/OrdersServlet.java

@@ -1,6 +1,10 @@
 package example.controller;
 
+import example.model.Computer;
+import example.model.User;
+import example.service.ICartService;
 import example.service.IOrdersService;
+import example.service.impl.CartServiceImpl;
 import example.service.impl.OrdersServiceImpl;
 
 import javax.servlet.ServletException;
@@ -9,12 +13,15 @@ import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.util.List;
 
 @WebServlet("/orders")
 public class OrdersServlet extends HttpServlet {
 
     IOrdersService ordersService=new OrdersServiceImpl();
 
+    ICartService cartService=new CartServiceImpl();
+
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
         String action = req.getParameter("action");
@@ -35,4 +42,24 @@ public class OrdersServlet extends HttpServlet {
 
         }
     }
+
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        req.setCharacterEncoding("utf-8");
+        double price = Double.parseDouble(req.getParameter("price"));
+        String address = req.getParameter("address");
+        String remark = req.getParameter("remark");
+        User user = (User) req.getSession().getAttribute("user");
+        int flag=ordersService.addOrder(user.getId(),price, address, remark);
+//        移出购物车所有信息
+        try {
+            List<Computer> computers = cartService.myCart(user.getId());
+            for (Computer computer : computers) {
+                cartService.removeFromCart(user.getId(), computer.getId());
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+        resp.sendRedirect("/");
+    }
 }

src/main/java/example/dao/OrdersDao.java

@@ -5,6 +5,7 @@ import example.utils.DBUtils;
 import org.apache.commons.dbutils.QueryRunner;
 import org.apache.commons.dbutils.handlers.BeanListHandler;
 
+import java.time.LocalDateTime;
 import java.util.List;
 
 public class OrdersDao {
@@ -26,4 +27,14 @@ public class OrdersDao {
         OrdersDao ordersDao = new OrdersDao();
         System.out.println(ordersDao.getAllOrders());
     }
+
+    public int addOrder(int userId,double price, String address, String remark) {
+        String sql="insert into orders(user_id,order_date,total_price,address,remark) values(?,?,?,?,?)";
+        try {
+            return queryRunner.update(sql,userId, LocalDateTime.now(),price,address,remark);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return 0;
+    }
 }

src/main/java/example/service/ICartService.java

@@ -9,5 +9,5 @@ public interface ICartService {
 
     void addCart(int i, int id) throws Exception;
 
-    void removeFromCart(int i, int id) throws Exception;
+    void removeFromCart(int userId, int productId) throws Exception;
 }

src/main/java/example/service/IOrdersService.java

@@ -11,4 +11,6 @@ public interface IOrdersService {
     void allOrder(HttpServletRequest req, HttpServletResponse resp);
 
     void checkOrder(HttpServletRequest req, HttpServletResponse resp) throws Exception;
+
+    int addOrder(int userId,double price, String address, String remark);
 }

src/main/java/example/service/impl/CartServiceImpl.java

@@ -21,7 +21,7 @@ public class CartServiceImpl implements ICartService {
     }
 
     @Override
-    public void removeFromCart(int i, int id) throws Exception {
-        cartDao.deleteCart(id, i);
+    public void removeFromCart(int userId, int productId) throws Exception {
+        cartDao.deleteCart(userId, productId);
     }
 }

src/main/java/example/service/impl/OrdersServiceImpl.java

@@ -46,4 +46,9 @@ public class OrdersServiceImpl implements IOrdersService {
         req.getRequestDispatcher("checkOrder.jsp").forward(req,resp);
     }
 
+    @Override
+    public int addOrder(int userId,double price, String address, String remark) {
+        return ordersDao.addOrder(userId,price,address,remark);
+    }
+
 }

src/main/webapp/checkOrder.jsp

@@ -10,12 +10,12 @@
 <body>
     <h1>订单确认</h1>
     <form action="/orders" method="post">
-        <label for="name">总金额: </label><br>
-        <input type="text" id="name" name="name" value="${order.totalPrice}" disabled><br><br>
-        <label for="price">地址: </label><br>
-        <input type="text" id="price" name="price" value="${order.address}" required><br><br>
-        <label for="stock">商品信息: </label><br>
-        <textarea id="stock" name="stock" rows="15" cols="30" disabled>${order.remark}</textarea><br><br>
+        <label for="price">总金额: </label><br>
+        <input type="text" id="price" name="price" value="${order.totalPrice}" readonly><br><br>
+        <label for="address">地址: </label><br>
+        <input type="text" id="address" name="address" value="${order.address}" required><br><br>
+        <label for="remark">商品信息: </label><br>
+        <textarea id="remark" name="remark" rows="15" cols="30" readonly>${order.remark}</textarea><br><br>
         <input type="submit" value="我已确认">
     </form>
     <br>