优化各页面跳转逻辑，以及权限验证

src/main/java/eu/org/biwin/screen/advice/GlobalExceptionHandler.java

@@ -1,6 +1,7 @@
 package eu.org.biwin.screen.advice;
 
 import cn.dev33.satoken.exception.NotLoginException;
+import cn.dev33.satoken.exception.NotRoleException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import org.springframework.http.HttpStatus;
@@ -34,6 +35,10 @@ public class GlobalExceptionHandler {
         return "redirect:/login";
     }
 
+    @ExceptionHandler(NotRoleException.class)
+    public Object handlerNotRoleException(NotRoleException nre, HttpServletRequest request, HttpServletResponse response) {
+        return "redirect:/";
+    }
     @ExceptionHandler(Exception.class)
     public ResponseEntity<String> handleException(Exception e) {
         e.printStackTrace();

src/main/java/eu/org/biwin/screen/controller/AdminController.java

@@ -83,12 +83,6 @@ public class AdminController {
         return JSONUtil.toJsonStr(result);
     }
 
-    @GetMapping
-    @SaCheckRole("admin") // Add annotation to each protected method
-    public String adminPage() {
-        return "admin";
-    }
-
     @GetMapping("/codes")
     @ResponseBody
     @SaCheckRole("admin") // Add annotation to each protected method

src/main/java/eu/org/biwin/screen/controller/GalleryController.java

@@ -1,5 +1,6 @@
 package eu.org.biwin.screen.controller;
 
+import cn.dev33.satoken.annotation.SaCheckRole;
 import cn.dev33.satoken.stp.StpUtil;
 import eu.org.biwin.screen.model.ImageGroup;
 import jakarta.servlet.http.HttpServletRequest;
@@ -96,6 +97,12 @@ public class GalleryController {
         return "cart";
     }
 
+    @GetMapping("/admin")
+    @SaCheckRole("admin") // Add annotation to each protected method
+    public String adminPage() {
+        return "admin";
+    }
+
     @PostMapping("/doLogin")
     @ResponseBody
     public String doLogin(String password) {

src/main/resources/templates/cart.html

@@ -74,7 +74,7 @@
 
 <div class="navbar">
     <a href="/">返回主页</a>
-    <a id="admin-link" href="/api/admin" style="display: none;">管理后台</a>
+    <a id="admin-link" href="/admin" style="display: none;">管理后台</a>
 </div>
 
 <div class="main-content">

src/main/resources/templates/index.html

@@ -77,7 +77,7 @@
 <div class="main-content">
     <div class="breadcrumb" id="breadcrumb">
         <div id="breadcrumb-links"></div>
-        <a id="admin-link" class="admin-link" href="/api/admin" style="display: none;">后台管理</a>
+        <a id="admin-link" class="admin-link" href="/admin" style="display: none;">后台管理</a>
     </div>
     <div class="folder-container" id="folder-list"></div>
     <div class="grid" id="image-grid"></div>