diff --git a/src/main/java/com/yunhai/userbase/config/CacheConfig.java b/src/main/java/com/yunhai/userbase/config/CacheConfig.java
index 4399a87..444784a 100644
--- a/src/main/java/com/yunhai/userbase/config/CacheConfig.java
+++ b/src/main/java/com/yunhai/userbase/config/CacheConfig.java
@@ -4,7 +4,9 @@ import com.fasterxml.jackson.annotation.JsonAutoDetect;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
 import com.fasterxml.jackson.annotation.PropertyAccessor;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import com.github.benmanes.caffeine.cache.Caffeine;
 import com.yunhai.userbase.utils.ConstantUtil;
 import org.springframework.cache.Cache;
@@ -40,13 +42,7 @@ public class CacheConfig {
     @Bean
     public RedisCacheManager redisCacheManager(RedisConnectionFactory factory) {
         Jackson2JsonRedisSerializer<Object> jacksonSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
-        ObjectMapper mapper = new ObjectMapper();
-        // 允许任意字段可见，保证反序列化不依赖 getter/setter
-        mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
-        // 记录完整类型信息，保证泛型/多态对象反序列化正常（解决 JDK 序列化乱码、泛型丢失）
-        mapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance,
-                ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
-        jacksonSerializer.setObjectMapper(mapper);
+        jacksonSerializer.setObjectMapper(newCacheObjectMapper());
 
         RedisCacheConfiguration cacheConfig = RedisCacheConfiguration.defaultCacheConfig()
                 .entryTtl(ConstantUtil.CACHE_TTL)                                      // 全局 5 分钟过期
@@ -173,11 +169,21 @@ public class CacheConfig {
     /** 统一构建带类型信息的 Jackson 序列化器（解决泛型/乱码），供 RedisTemplate 复用。 */
     private Jackson2JsonRedisSerializer<Object> jacksonSerializer() {
         Jackson2JsonRedisSerializer<Object> jackson = new Jackson2JsonRedisSerializer<>(Object.class);
-        ObjectMapper mapper = new ObjectMapper();
-        mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
-        mapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance,
-                ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
-        jackson.setObjectMapper(mapper);
+        jackson.setObjectMapper(newCacheObjectMapper());
         return jackson;
     }
+
+    /** 构建缓存专用 ObjectMapper：类型信息 + 可见性 + Java 8 时间类型支持。 */
+    private ObjectMapper newCacheObjectMapper() {
+        ObjectMapper mapper = new ObjectMapper();
+        // 允许任意字段可见，保证反序列化不依赖 getter/setter
+        mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
+        // 记录完整类型信息，保证泛型/多态对象反序列化正常（解决 JDK 序列化乱码、泛型丢失）
+        mapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance,
+                ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
+        // 支持 Java 8 时间类型（LocalDateTime 等），否则缓存含时间字段的实体（如 ApplicationInfo.createTime）会序列化失败
+        mapper.registerModule(new JavaTimeModule());
+        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        return mapper;
+    }
 }