diff --git a/client-api/src/main/java/org/jiayunet/service/JobIntentionService.java b/client-api/src/main/java/org/jiayunet/service/JobIntentionService.java
index 71e5a00..78f0728 100644
--- a/client-api/src/main/java/org/jiayunet/service/JobIntentionService.java
+++ b/client-api/src/main/java/org/jiayunet/service/JobIntentionService.java
@@ -10,11 +10,13 @@ import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.time.Instant;
+
 /**
  * 求职意向服务
- * 主要功能：用户求职意向的查询和保存
- * 依赖服务：无
- * 使用的表：bg_user_job_intention
+ * <p>主要功能：用户求职意向的查询和保存</p>
+ * <p>依赖服务：无</p>
+ * <p>使用的表：bg_user_job_intention</p>
  *
  * @author zk
  */
@@ -25,7 +27,7 @@ public class JobIntentionService {
 
     /**
      * 查询当前用户的求职意向
-     * 逻辑：根据userId查询，不存在返回null
+     * <p>根据userId查询，不存在返回null</p>
      */
     public JobIntentionDto getJobIntention() {
         Long userId = UserSecurityTool.getUserId();
@@ -40,18 +42,28 @@ public class JobIntentionService {
 
     /**
      * 保存/更新求职意向
-     * 逻辑：先查询是否存在，存在则更新，不存在则新增
+     * <p>先查询是否存在，存在则更新，不存在则新增</p>
      */
     public void saveJobIntention(JobIntentionParam param) {
         Long userId = UserSecurityTool.getUserId();
         UserJobIntention po = intentionMapper.selectOne(new LambdaQueryWrapper<UserJobIntention>().eq(UserJobIntention::getUserId, userId));
+        
         if (po == null) {
             po = new UserJobIntention();
             po.setUserId(userId);
-            BeanUtils.copyProperties(param, po);
+            po.setCategoryIds(param.getCategoryIds() != null ? param.getCategoryIds() : java.util.Collections.emptyList());
+            po.setRegionCodes(param.getRegionCodes() != null ? param.getRegionCodes() : java.util.Collections.emptyList());
+            po.setIndustryIds(param.getIndustryIds() != null ? param.getIndustryIds() : java.util.Collections.emptyList());
+            po.setEmploymentType(param.getEmploymentType());
+            po.setCreateTime(Instant.now());
+            po.setUpdateTime(Instant.now());
             intentionMapper.insert(po);
         } else {
-            BeanUtils.copyProperties(param, po);
+            po.setCategoryIds(param.getCategoryIds() != null ? param.getCategoryIds() : java.util.Collections.emptyList());
+            po.setRegionCodes(param.getRegionCodes() != null ? param.getRegionCodes() : java.util.Collections.emptyList());
+            po.setIndustryIds(param.getIndustryIds() != null ? param.getIndustryIds() : java.util.Collections.emptyList());
+            po.setEmploymentType(param.getEmploymentType());
+            po.setUpdateTime(Instant.now());
             intentionMapper.updateById(po);
         }
     }
diff --git a/common/src/main/java/org/jiayunet/config/JacksonConfig.java b/common/src/main/java/org/jiayunet/config/JacksonConfig.java
index ae26be7..679e571 100644
--- a/common/src/main/java/org/jiayunet/config/JacksonConfig.java
+++ b/common/src/main/java/org/jiayunet/config/JacksonConfig.java
@@ -24,7 +24,24 @@ public class JacksonConfig {
     private static final JsonSerializer<Long> LONG_SERIALIZER = new JsonSerializer<Long>() {
         @Override
         public void serialize(Long value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
-            gen.writeString(value.toString());
+            if (value == null) {
+                gen.writeNull();
+            } else {
+                gen.writeString(value.toString());
+            }
+        }
+    };
+
+    private static final JsonSerializer<Object> NUMBER_TO_STRING_SERIALIZER = new JsonSerializer<Object>() {
+        @Override
+        public void serialize(Object value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+            if (value == null) {
+                gen.writeNull();
+            } else if (value instanceof Number) {
+                gen.writeString(String.valueOf(((Number) value).longValue()));
+            } else {
+                gen.writeString(value.toString());
+            }
         }
     };
 
@@ -38,11 +55,16 @@ public class JacksonConfig {
 
     @Bean
     public ObjectMapper objectMapper(Jackson2ObjectMapperBuilder builder) {
-        return builder
-                .serializerByType(Long.class, LONG_SERIALIZER)
-                .serializerByType(long.class, LONG_SERIALIZER)
+        ObjectMapper mapper = builder
                 .deserializerByType(Long.class, LONG_DESERIALIZER)
                 .deserializerByType(long.class, LONG_DESERIALIZER)
                 .build();
+        
+        // 使用兼容 Number 类型的序列化器
+        mapper.registerModule(new com.fasterxml.jackson.databind.module.SimpleModule()
+                .addSerializer(Long.class, NUMBER_TO_STRING_SERIALIZER)
+                .addSerializer(long.class, NUMBER_TO_STRING_SERIALIZER));
+        
+        return mapper;
     }
 }
diff --git a/manager/src/main/java/org/jiayunet/pojo/po/UserJobIntention.java b/manager/src/main/java/org/jiayunet/pojo/po/UserJobIntention.java
index 1bb36e7..058a161 100644
--- a/manager/src/main/java/org/jiayunet/pojo/po/UserJobIntention.java
+++ b/manager/src/main/java/org/jiayunet/pojo/po/UserJobIntention.java
@@ -1,11 +1,14 @@
 package org.jiayunet.pojo.po;
 
 import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
+import com.baomidou.mybatisplus.extension.handlers.JacksonTypeHandler;
 import lombok.Data;
 
 import java.time.Instant;
+import java.util.List;
 
 /**
  * 用户求职意向表（bg_user_job_intention）
@@ -13,7 +16,7 @@ import java.time.Instant;
  * @author zk
  */
 @Data
-@TableName(value = "bg_user_job_intention")
+@TableName(value = "bg_user_job_intention", autoResultMap = true)
 public class UserJobIntention {
 
     @TableId(type = IdType.ASSIGN_ID)
@@ -22,14 +25,17 @@ public class UserJobIntention {
     /** 用户ID */
     private Long userId;
 
-    /** 意向岗位类型ID列表（JSON数组），节点可能为任意级别 */
-    private String categoryIds;
+    /** 意向岗位类型ID列表，节点可能为任意级别 */
+    @TableField(typeHandler = JacksonTypeHandler.class)
+    private List<Long> categoryIds;
 
-    /** 意向城市编码列表（JSON数组），节点可能为任意级别 */
-    private String regionCodes;
+    /** 意向城市编码列表，节点可能为任意级别 */
+    @TableField(typeHandler = JacksonTypeHandler.class)
+    private List<String> regionCodes;
 
-    /** 意向行业ID列表（JSON数组），节点可能为任意级别 */
-    private String industryIds;
+    /** 意向行业ID列表，节点可能为任意级别 */
+    @TableField(typeHandler = JacksonTypeHandler.class)
+    private List<Long> industryIds;
 
     /** 工作类型 0=全职 1=实习 */
     private Integer employmentType;