jamesfredley commented on code in PR #15541:
URL: https://github.com/apache/grails-core/pull/15541#discussion_r3030395829


##########
grails-web-common/src/main/groovy/org/grails/web/config/http/GrailsFilterOrder.java:
##########
@@ -0,0 +1,48 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package org.grails.web.config.http;
+
+/**
+ * Constants for filter ordering in Grails applications.
+ * <p>
+ * These constants were previously obtained from Spring Boot's {@code 
SecurityProperties}
+ * class, but were removed in Spring Boot 4.0. They are now defined here for 
use by
+ * Grails filter configuration.
+ *
+ * @since 8.0
+ */
+public final class GrailsFilterOrder {
+
+    private GrailsFilterOrder() {
+        // Utility class
+    }
+
+    /**
+     * Default order of Spring Security's Filter in the servlet container 
(i.e. amongst
+     * other filters registered with the container). There is no connection 
between this
+     * and the {@code @Order} on a {@code SecurityFilterChain}.
+     * <p>
+     * The value {@code -100} matches what was previously defined in Spring 
Boot's
+     * {@code SecurityProperties.DEFAULT_FILTER_ORDER} (computed as
+     * {@code OrderedFilter.REQUEST_WRAPPER_FILTER_MAX_ORDER - 100}) before it 
was
+     * removed in Spring Boot 4.0.
+     */
+    public static final int DEFAULT_FILTER_ORDER = -100;

Review Comment:
   Yes - Spring Security is moving toward the fluent `HttpSecurity` 
configuration API and away from explicit filter ordering via 
`SecurityProperties`. The `DEFAULT_FILTER_ORDER` constant was removed because 
Spring now manages filter ordering internally through the security filter 
chain. We've preserved the computed value 
(`OrderedFilter.REQUEST_WRAPPER_FILTER_MAX_ORDER - 100`) and documented the 
history in the Javadoc so the reasoning is clear for future reference. Longer 
term, we may want to align with Spring's fluent API approach.



##########
grails-web-url-mappings/src/main/groovy/grails/web/mapping/ResponseRedirector.groovy:
##########
@@ -139,7 +139,7 @@ class ResponseRedirector {
             status = moved ? HttpStatus.MOVED_PERMANENTLY.value() : 
HttpStatus.PERMANENT_REDIRECT.value()
         }
         else {
-            status = moved ? HttpStatus.MOVED_TEMPORARILY.value() : 
HttpStatus.TEMPORARY_REDIRECT.value()
+            status = moved ? HttpStatus.FOUND.value() : 
HttpStatus.TEMPORARY_REDIRECT.value()

Review Comment:
   Good call - adding this to the upgrade guide. `HttpStatus.MOVED_TEMPORARILY` 
was deprecated by Spring and removed in favor of `HttpStatus.FOUND` (both are 
HTTP 302). This is a straightforward rename with no behavioral change, but 
should be documented for anyone referencing `MOVED_TEMPORARILY` in their 
application code.



##########
grails-web-url-mappings/src/main/groovy/org/grails/web/mapping/mvc/UrlMappingsInfoHandlerAdapter.groovy:
##########
@@ -158,6 +158,5 @@ class UrlMappingsInfoHandlerAdapter implements 
HandlerAdapter, ApplicationContex
         return null
     }
 
-    @Override
     long getLastModified(HttpServletRequest request, Object handler) { -1 }

Review Comment:
   Done - removed the `getLastModified` method. It was deprecated and removed 
from the `HandlerAdapter` interface in Spring Framework 7.



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