fix<路径调整>

src/main/java/example/controller/CartServlet.java

@@ -65,7 +65,7 @@ public class CartServlet extends HttpServlet {
         User user = (User) req.getSession().getAttribute("user");
         cartService.addCart(Integer.parseInt(id),user.getId());
         req.setAttribute("msg","加购成功");
-        req.getRequestDispatcher("/computerList").forward(req,resp);
+        req.getRequestDispatcher("/computer?action=list").forward(req,resp);
     }
 
     private void toCart(HttpServletRequest req, HttpServletResponse resp) throws Exception {

src/main/java/example/controller/ComputerServlet.java

@@ -10,32 +10,33 @@ import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.io.UnsupportedEncodingException;
 import java.sql.SQLException;
 import java.util.List;
 
-@WebServlet(urlPatterns = {"/computerList","/deleteComputer","/addComputer","/editComputer"})
+@WebServlet(urlPatterns = {"/computer"})
 public class ComputerServlet extends HttpServlet {
 
     IComputerService computerService = new ComputerServiceImpl();
 
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-        String path = req.getServletPath();
+        String action = req.getParameter("action");
-        switch (path) {
+        switch (action) {
-            case "/computerList":
+            case "list":
                 try {
                     listServlet(req, resp);
                 } catch (SQLException e) {
                     throw new RuntimeException(e);
                 }
                 break;
-            case "/deleteComputer":
+            case "delete":
                 deleteComputer(req, resp);
                 break;
-            case "/addComputer":
+            case "add":
                 addComputer(req, resp);
                 break;
-            case "/editComputer":
+            case "edit":
                 editComputer(req, resp);
                 break;
         }
@@ -56,7 +57,7 @@ public class ComputerServlet extends HttpServlet {
         String id = req.getParameter("id");
         try {
             computerService.deleteComputer(id);
-            resp.sendRedirect("/computerList");
+            resp.sendRedirect("/computer?action=list");
         } catch (IOException e) {
             throw new RuntimeException(e);
         }
@@ -70,25 +71,25 @@ public class ComputerServlet extends HttpServlet {
 
     @Override
     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-        String path = req.getServletPath();
+        String action = req.getParameter("action");
-        switch (path) {
+        switch (action) {
-            case "/addComputer":
+            case "add":
                 savaComputer(req, resp);
                 break;
-            case "/editComputer":
+            case "edit":
-                UpdatComputer(req, resp);
+                UpdateComputer(req, resp);
                 break;
         }
     }
 
-    private void UpdatComputer(HttpServletRequest req, HttpServletResponse resp) {
+    private void UpdateComputer(HttpServletRequest req, HttpServletResponse resp) throws UnsupportedEncodingException {
         String id = req.getParameter("id");
         String name = req.getParameter("name");
         String price = req.getParameter("price");
         String stock = req.getParameter("stock");
         computerService.updateComputer(id,name,Double.parseDouble(price),Integer.parseInt(stock));
         try {
-            resp.sendRedirect("/computerList");
+            resp.sendRedirect("/computer?action=list");
         } catch (IOException e) {
             throw new RuntimeException(e);
         }
@@ -100,7 +101,7 @@ public class ComputerServlet extends HttpServlet {
         String stock = req.getParameter("stock");
         computerService.addComputer(name,Double.parseDouble(price),Integer.parseInt(stock));
         try {
-            resp.sendRedirect("/computerList");
+            resp.sendRedirect("/computer?action=list");
         } catch (IOException e) {
             throw new RuntimeException(e);
         }

src/main/webapp/addComputer.jsp

@@ -9,7 +9,7 @@
 </head>
 <body>
     <h1>电脑产品发布</h1>
-    <form action="/addComputer" method="post">
+    <form action="/computer?action=add" method="post">
         <label for="name">名称: </label><br>
         <input type="text" id="name" name="name"><br><br>
         <label for="price">价格: </label><br>
@@ -19,6 +19,6 @@
         <input type="submit" value="确定">
     </form>
     <br>
-    <a href="/computerList">返回电脑列表</a>
+    <a href="/computer?action=list">返回电脑列表</a>
 </body>
 </html>

src/main/webapp/computerList.jsp

@@ -31,8 +31,8 @@
                             <td>${computer.stock}</td>
                             <td>
                                 <c:if test="${sessionScope.user.role == 'admin'}">
-                                    <a href="/editComputer?id=${computer.id}">编辑</a> |
+                                    <a href="/computer?action=edit&id=${computer.id}">编辑</a> |
-                                    <a href="/deleteComputer?id=${computer.id}">删除</a>
+                                    <a href="/computer?action=delete&id=${computer.id}">删除</a>
                                 </c:if>
 
 
@@ -52,7 +52,7 @@
                 <a href="/cart?action=list">我的购物车</a>
             </c:if>
             <c:if test="${sessionScope.user.role == 'admin'}">
-                <a href="/addComputer">发布电脑产品</a>
+                <a href="/computer?action=add">发布电脑产品</a>
             </c:if>
             <br>
             <a href="/">主页</a>

src/main/webapp/editComputer.jsp

@@ -10,7 +10,7 @@
 </head>
 <body>
     <h1>更新电脑信息</h1>
-    <form action="/editComputer" method="post">
+    <form action="/computer?action=edit" method="post">
         <input type="hidden" name="id" value="${computer.id}">
         <label for="name">名称: </label><br>
         <input type="text" id="name" name="name" value="${computer.name}"><br><br>
@@ -21,6 +21,6 @@
         <input type="submit" value="提交修改">
     </form>
     <br>
-    <a href="/computerList">返回电脑列表</a>
+    <a href="/computer?action=list">返回电脑列表</a>
 </body>
 </html>

src/main/webapp/index.jsp

@@ -6,7 +6,7 @@
     <h2>电脑商城-首页</h2>
     <p>你好！${sessionScope.user.username}</p>
     <c:if test="${sessionScope.user!= null}">
-        <a href="/computerList">电脑选购</a>
+        <a href="/computer?action=list">电脑选购</a>
         <c:if test="${sessionScope.user.role == 'user'}">
             <a href="/cart?action=list">我的购物车</a>
             <a href="/orders?action=my">我的订单</a>