优化

shopingcart-backend/src/main/java/com/ywp/shoppingcartbackend/ShoppingcartBackendApplication.java

@@ -12,6 +12,7 @@ public class ShoppingcartBackendApplication {
 
     public static void main(String[] args) {
         SpringApplication.run(ShoppingcartBackendApplication.class, args);
+        System.out.println("----------------------start success-----------------------");
     }
 
 }

shopingcart-backend/src/main/resources/application.yml

@@ -4,4 +4,6 @@ spring:
     username: root
     password: 123456
     driver-class-name: com.mysql.cj.jdbc.Driver
+server:
+  port: 9998
 

shoppingcart-frontend/shoppingcart/src/App.js

@@ -1,37 +1,29 @@
 import React, { useState } from 'react';
-import { BrowserRouter as Router, Switch, Route, Redirect } from 'react-router-dom';
+import { BrowserRouter as Router, Route, Routes, Navigate } from "react-router-dom";
 import LoginPage from './pages/LoginPage';
 import CartPage from './pages/CartPage';
 import OrderPage from './pages/OrderPage';
 import ProductPage from './pages/ProductPage';
 // 引入其他页面组件...
 
-const App = () => {
-    const [user, setUser] = useState(null);
+function App() {
+  const [user, setUser] = useState(null);
 
-    const handleLogin = (userData) => {
-        setUser(userData);
-    };
+  const handleLogin = (userData) => {
+      setUser(userData);
+  };
 
-    return (
-        <Router>
-            <Switch>
-                <Route path="/login">
-                    {user ? <Redirect to="/cart" /> : <LoginPage onLogin={handleLogin} />}
-                </Route>
-                <Route path="/cart">
-                    {user ? <CartPage userId={user.id} /> : <Redirect to="/login" />}
-                </Route>
-                <Route path="/orders">
-                    {user ? <OrderPage userId={user.id} /> : <Redirect to="/login" />}
-                </Route>
-                <Route path="/products">
-                    <ProductPage />
-                </Route>
-                {/* 添加其他路由... */}
-            </Switch>
-        </Router>
-    );
+  return (
+      <Router>
+          <Routes>
+              <Route path="/login" element={user ? <Navigate to="/cart" /> : <LoginPage onLogin={handleLogin} />}/>
+              <Route path="/cart" element={user ? <CartPage userId={user.id} /> : <Navigate to="/login" />} />
+              <Route path="/orders" element={user ? <OrderPage userId={user.id} /> : <Navigate to="/login" />} />
+              <Route path="/products" element={<ProductPage />} />
+              {/* 添加其他路由... */}
+          </Routes>
+      </Router>
+  );
 };
 
 export default App;