diff --git a/src/main/java/com/syjiaer/clinic/server/common/config/RedisConfig.java b/src/main/java/com/syjiaer/clinic/server/common/config/RedisConfig.java
index af27130..7f2b28c 100644
--- a/src/main/java/com/syjiaer/clinic/server/common/config/RedisConfig.java
+++ b/src/main/java/com/syjiaer/clinic/server/common/config/RedisConfig.java
@@ -15,7 +15,16 @@ public class RedisConfig {
     public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
         RedisTemplate<String, Object> template = new RedisTemplate<>();
         template.setConnectionFactory(connectionFactory);
+        // 设置 key 和 hashKey 使用 StringRedisSerializer
         template.setKeySerializer(new StringRedisSerializer());
+        template.setHashKeySerializer(new StringRedisSerializer());
+
+        // 设置 value 和 hashValue 使用 StringRedisSerializer
+        template.setValueSerializer(new StringRedisSerializer());
+        template.setHashValueSerializer(new StringRedisSerializer());
+
+        template.afterPropertiesSet();
+
         return template;
     }
 
diff --git a/src/main/java/com/syjiaer/clinic/server/common/util/CacheUtil.java b/src/main/java/com/syjiaer/clinic/server/common/util/CacheUtil.java
index dae3e97..757f8b4 100644
--- a/src/main/java/com/syjiaer/clinic/server/common/util/CacheUtil.java
+++ b/src/main/java/com/syjiaer/clinic/server/common/util/CacheUtil.java
@@ -21,9 +21,9 @@ public class CacheUtil {
     }
 
     public <T> T get(String key, Class<T> clazz) {
-        Object object = redisTemplate.opsForValue().get(key);
-        T t = JSON.parseObject((String) object, clazz);
-        return t;
+        String json = (String) redisTemplate.opsForValue().get(key);
+        if (json == null) return null;
+        return JSON.parseObject(json, clazz);
     }
 
     public JSONObject get(String key) {