From 027964010035a14a3459ba856f1ca8b602bb3d78 Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Tue, 24 Mar 2026 17:57:50 +0100
Subject: [PATCH] Migration Spring-Boot 3.4.1 -> 4.0.2
 (springkafka/spring-consumer--kafkahandler)

* Ohne die Anpassungen startet die Anwendung ohne Fehler...
* ...allerdings wird der `MessageListenerContainer` nicht gestartet!
* D.h., ohne die Anpassungen verarbeitet die Anwendung gar keine Nachrichten.
---
 pom.xml                            | 8 ++++----
 src/main/resources/application.yml | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/pom.xml b/pom.xml
index b8874dc7..b5fcc8f7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,6 +22,10 @@
   </properties>
 
   <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-kafka</artifactId>
+    </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
@@ -39,10 +43,6 @@
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-validation</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.springframework.kafka</groupId>
-      <artifactId>spring-kafka</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.projectlombok</groupId>
       <artifactId>lombok</artifactId>
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index b3e33585..8c09c9c1 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -27,7 +27,7 @@ spring:
     client-id: DEV
     consumer:
       group-id: my-group
-      value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer
+      value-deserializer: org.springframework.kafka.support.serializer.JacksonJsonDeserializer
       properties:
         "[spring.json.type.mapping]": ADD:de.juplo.kafka.MessageAddNumber,CALC:de.juplo.kafka.MessageCalculateSum
   level:
-- 
2.39.5