更新后端界面，用户管理界面

src/api/banner.js

@@ -6,7 +6,7 @@ import request from "@/utils/request";
  */
 export function getBanners() {
   return request({
-    url: "/admin/allbanners",
+    url: "/backend/allbanners",
     method: "get",
   });
 }
@@ -18,7 +18,7 @@ export function getBanners() {
  */
 export function createBanner(formData) {
   return request({
-    url: "/admin/createbanner",
+    url: "/backend/createbanner",
     method: "post",
     data: formData,
     headers: {
@@ -35,7 +35,7 @@ export function createBanner(formData) {
  */
 export function editBanner(id, bannerData) {
   return request({
-    url: `/admin/editbanner/${id}`,
+    url: `/backend/editbanner/${id}`,
     method: "post",
     data: bannerData,
   });
@@ -48,7 +48,7 @@ export function editBanner(id, bannerData) {
  */
 export function deleteBanner(id) {
   return request({
-    url: `/admin/deletebanner/${id}`,
+    url: `/backend/deletebanner/${id}`,
     method: "delete",
   });
 }