添加基本代码

src/router/index.js

@@ -52,6 +52,11 @@ const routes = [
     }
 ];
 
+const route404 = {
+    path:" /:pathMatch(.*)*",
+    name: "404",
+    redirect: "/404"
+}
 const router = createRouter({history: createWebHashHistory(), routes})
 
 router.beforeEach((to) => {