diff --git a/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/mapper/MybatisUserMapper.java b/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/mapper/MybatisUserMapper.java
index a07bf10..cf2ee82 100644
--- a/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/mapper/MybatisUserMapper.java
+++ b/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/mapper/MybatisUserMapper.java
@@ -1,7 +1,7 @@
 package com.xkcoding.springbootdemomybatis.mapper;
 
 import com.xkcoding.springbootdemomybatis.model.MybatisUser;
-import com.xkcoding.springbootdemomybatis.utils.MyMapper;
+import com.xkcoding.springbootdemomybatis.util.MyMapper;
 import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Component;
 
diff --git a/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/utils/MyMapper.java b/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/util/MyMapper.java
similarity index 75%
rename from spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/utils/MyMapper.java
rename to spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/util/MyMapper.java
index 8fea828..c1c8cbc 100644
--- a/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/utils/MyMapper.java
+++ b/spring-boot-demo-mybatis/src/main/java/com/xkcoding/springbootdemomybatis/util/MyMapper.java
@@ -1,4 +1,4 @@
-package com.xkcoding.springbootdemomybatis.utils;
+package com.xkcoding.springbootdemomybatis.util;
 
 import tk.mybatis.mapper.common.Mapper;
 import tk.mybatis.mapper.common.MySqlMapper;
diff --git a/spring-boot-demo-mybatis/src/main/resources/application.yml b/spring-boot-demo-mybatis/src/main/resources/application.yml
index d2c9878..c8f7b18 100644
--- a/spring-boot-demo-mybatis/src/main/resources/application.yml
+++ b/spring-boot-demo-mybatis/src/main/resources/application.yml
@@ -2,6 +2,8 @@ server:
   port: 8080
   context-path: /demo
 spring:
+  jackson:
+    default-property-inclusion: non_null
   datasource:
     # 启动时自动运行的 SQL 文件
     schema: classpath:init-sql/schema.sql
@@ -55,7 +57,7 @@ mybatis:
 mapper:
   not-empty: false
   identity: MYSQL
-  mappers: com.xkcoding.springbootdemomybatis.utils.MyMapper
+  mappers: com.xkcoding.springbootdemomybatis.util.MyMapper
 #PageHelper 配置
 pagehelper:
   helper-dialect: mysql