From 7735c946587e31821cf183e2dee10cc25402a365 Mon Sep 17 00:00:00 2001
From: jujn <2087687391@qq.com>
Date: Sun, 9 Aug 2026 21:00:35 +0800
Subject: [PATCH] fix(agui): configure Spring Boot 4 example to decode AG-UI
 requests with Jackson 2

---
 agentscope-examples/agui/pom.xml              |  4 +++
 .../agui/config/Jackson2Configuration.java    | 34 +++++++++++++++++++
 .../agui/src/main/resources/application.yml   |  4 +++
 3 files changed, 42 insertions(+)
 create mode 100644 agentscope-examples/agui/src/main/java/io/agentscope/examples/agui/config/Jackson2Configuration.java

diff --git a/agentscope-examples/agui/pom.xml b/agentscope-examples/agui/pom.xml
index 356433737e..a03bd8cae7 100644
--- a/agentscope-examples/agui/pom.xml
+++ b/agentscope-examples/agui/pom.xml
@@ -64,6 +64,10 @@
             <groupId>io.agentscope</groupId>
             <artifactId>agentscope-agui-spring-boot-starter</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-webflux</artifactId>
diff --git a/agentscope-examples/agui/src/main/java/io/agentscope/examples/agui/config/Jackson2Configuration.java b/agentscope-examples/agui/src/main/java/io/agentscope/examples/agui/config/Jackson2Configuration.java
new file mode 100644
index 0000000000..f415347466
--- /dev/null
+++ b/agentscope-examples/agui/src/main/java/io/agentscope/examples/agui/config/Jackson2Configuration.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2024-2026 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
+ *
+ *     http://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 io.agentscope.examples.agui.config;
+
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class Jackson2Configuration {
+
+    @Bean
+    @ConditionalOnMissingBean(ObjectMapper.class)
+    public ObjectMapper jackson2ObjectMapper() {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        return mapper;
+    }
+}
diff --git a/agentscope-examples/agui/src/main/resources/application.yml b/agentscope-examples/agui/src/main/resources/application.yml
index 2d55e3ac89..44aecd9c62 100644
--- a/agentscope-examples/agui/src/main/resources/application.yml
+++ b/agentscope-examples/agui/src/main/resources/application.yml
@@ -20,6 +20,10 @@ server:
 spring:
   main:
     banner-mode: off
+  http:
+    codecs:
+      # AG-UI models use Jackson 2 annotations and custom serializers.
+      preferred-json-mapper: jackson2
   web:
     resources:
       cache: