From 57be6aa98375207a75620491780318d63f0dde8e Mon Sep 17 00:00:00 2001
From: Jerry Yan <792602257@qq.com>
Date: Fri, 28 Nov 2025 13:37:26 +0800
Subject: [PATCH] =?UTF-8?q?fix(redis):=20=E9=85=8D=E7=BD=AERedis=E7=BC=93?=
 =?UTF-8?q?=E5=AD=98=E7=AE=A1=E7=90=86=E5=99=A8=E4=BB=A5=E9=98=B2=E6=AD=A2?=
 =?UTF-8?q?ClassCastException?=
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- 添加BasicPolymorphicTypeValidator以处理多态类型
- 在ObjectMapper中激活默认类型检查
- 更新Redis序列化配置以支持类型安全
- 防止因类型转换导致的运行时异常
- 确保JavaTimeModule与类型检查兼容
- 统一Redis缓存和模板的序列化配置
---
 .../basic/config/CustomRedisCacheManager.java    | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/main/java/com/ycwl/basic/config/CustomRedisCacheManager.java b/src/main/java/com/ycwl/basic/config/CustomRedisCacheManager.java
index 6c70b0f2..dcbe1de2 100644
--- a/src/main/java/com/ycwl/basic/config/CustomRedisCacheManager.java
+++ b/src/main/java/com/ycwl/basic/config/CustomRedisCacheManager.java
@@ -2,6 +2,8 @@ package com.ycwl.basic.config;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import com.fasterxml.jackson.databind.jsontype.BasicPolymorphicTypeValidator;
+import com.fasterxml.jackson.databind.jsontype.PolymorphicTypeValidator;
 import org.springframework.cache.annotation.CachingConfigurerSupport;
 import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.context.annotation.Bean;
@@ -28,6 +30,13 @@ public class CustomRedisCacheManager extends CachingConfigurerSupport {
     public RedisCacheConfiguration redisCacheConfiguration() {
         ObjectMapper objectMapper = new ObjectMapper();
         objectMapper.registerModule(new JavaTimeModule());
+
+        // Configure type handling to prevent ClassCastException
+        PolymorphicTypeValidator typeValidator = BasicPolymorphicTypeValidator.builder()
+            .allowIfBaseType(Object.class)
+            .build();
+        objectMapper.activateDefaultTyping(typeValidator, ObjectMapper.DefaultTyping.NON_FINAL);
+
         Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(objectMapper, Object.class);
 
         RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig();
@@ -55,6 +64,13 @@ public class CustomRedisCacheManager extends CachingConfigurerSupport {
         // Configure Jackson2JsonRedisSerializer with JavaTimeModule for value serialization
         ObjectMapper objectMapper = new ObjectMapper();
         objectMapper.registerModule(new JavaTimeModule());
+
+        // Configure type handling to prevent ClassCastException
+        PolymorphicTypeValidator typeValidator = BasicPolymorphicTypeValidator.builder()
+            .allowIfBaseType(Object.class)
+            .build();
+        objectMapper.activateDefaultTyping(typeValidator, ObjectMapper.DefaultTyping.NON_FINAL);
+
         Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(objectMapper, Object.class);
 
         redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);