From 3d494890dbd90fd6e2f70ecd56c2ce8c1d7c0036 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Nicoll?= <stephane.nicoll@broadcom.com>
Date: Thu, 25 Apr 2024 15:06:34 +0200
Subject: [PATCH] Add reflection hints for field access

---
 .../com/example/demo/ReflectionController.java  | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/example/demo/ReflectionController.java b/src/main/java/com/example/demo/ReflectionController.java
index 752a493..8bfcb5e 100644
--- a/src/main/java/com/example/demo/ReflectionController.java
+++ b/src/main/java/com/example/demo/ReflectionController.java
@@ -1,12 +1,17 @@
 package com.example.demo;
 
-import org.springframework.aot.hint.annotation.Reflective;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.context.annotation.ImportRuntimeHints;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;
 import java.util.Arrays;
 import java.util.stream.Collectors;
 
+import com.example.demo.ReflectionController.ReflectionControllerHints;
+
 @RestController
+@ImportRuntimeHints(ReflectionControllerHints.class)
 public class ReflectionController {
 
     @GetMapping("/reflection")
@@ -14,7 +19,6 @@ public String message() {
         return getMessage();
     }
 
-    @Reflective
     private String getMessage() {
         try {
             String className = Arrays.asList("com", "example", "demo", "Message").stream().collect(Collectors.joining("."));
@@ -23,4 +27,13 @@ private String getMessage() {
             return "Got an error: " + e.getMessage();
         }
     }
+
+    static class ReflectionControllerHints implements RuntimeHintsRegistrar {
+
+        @Override
+        public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
+            hints.reflection().registerType(Message.class, type -> type.withField("MESSAGE"));
+        }
+    }
+
 }
\ No newline at end of file