From e94f2a8e3ffaf203053ec82ea7719e4ca11c6a77 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Deleuze?= <sdeleuze@vmware.com>
Date: Thu, 30 Jun 2022 15:24:22 +0200
Subject: [PATCH] Add Jackson well-known module runtime hints

Closes gh-28709
---
 .../JacksonBuilderRuntimeHintsRegistrar.java  | 43 +++++++++++++++++++
 .../resources/META-INF/spring/aot.factories   |  3 +-
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 spring-web/src/main/java/org/springframework/http/converter/json/JacksonBuilderRuntimeHintsRegistrar.java

diff --git a/spring-web/src/main/java/org/springframework/http/converter/json/JacksonBuilderRuntimeHintsRegistrar.java b/spring-web/src/main/java/org/springframework/http/converter/json/JacksonBuilderRuntimeHintsRegistrar.java
new file mode 100644
index 00000000000..d3327a7117b
--- /dev/null
+++ b/spring-web/src/main/java/org/springframework/http/converter/json/JacksonBuilderRuntimeHintsRegistrar.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2002-2022 the original author or authors.
+ *
+ * Licensed 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.springframework.http.converter.json;
+
+import org.springframework.aot.hint.MemberCategory;
+import org.springframework.aot.hint.ReflectionHints;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
+
+/**
+ * {@link RuntimeHintsRegistrar} implementation that registers reflection entries
+ * for {@link Jackson2ObjectMapperBuilder} well-known modules.
+ *
+ * @author Sebastien Deleuze
+ * @since 6.0
+ */
+public class JacksonBuilderRuntimeHintsRegistrar implements RuntimeHintsRegistrar {
+	@Override
+	public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
+		ReflectionHints reflectionHints = hints.reflection();
+		reflectionHints.registerType(TypeReference.of("com.fasterxml.jackson.datatype.jdk8.Jdk8Module"),
+				builder -> builder.withMembers(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS));
+		reflectionHints.registerType(TypeReference.of("com.fasterxml.jackson.datatype.jsr310.JavaTimeModule"),
+				builder -> builder.withMembers(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS));
+		reflectionHints.registerType(TypeReference.of("com.fasterxml.jackson.module.kotlin.KotlinModule"),
+				builder -> builder.withMembers(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS));
+	}
+}
diff --git a/spring-web/src/main/resources/META-INF/spring/aot.factories b/spring-web/src/main/resources/META-INF/spring/aot.factories
index d2fb0e5d144..8273f70000b 100644
--- a/spring-web/src/main/resources/META-INF/spring/aot.factories
+++ b/spring-web/src/main/resources/META-INF/spring/aot.factories
@@ -1,3 +1,4 @@
 org.springframework.aot.hint.RuntimeHintsRegistrar= \
 org.springframework.http.MediaTypeResourceHintsRegistrar,\
-org.springframework.http.codec.CodecConfigurerHintsRegistrar
\ No newline at end of file
+org.springframework.http.codec.CodecConfigurerHintsRegistrar,\
+org.springframework.http.converter.json.JacksonBuilderRuntimeHintsRegistrar
\ No newline at end of file