diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java
index 353764bd..76e84851 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java
@@ -16,6 +16,16 @@
 
 package top.charles7c.cnadmin.system.mapper;
 
+import java.util.List;
+
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+
+import com.baomidou.mybatisplus.core.conditions.Wrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.core.toolkit.Constants;
+
+import top.charles7c.cnadmin.common.annotation.DataPermission;
 import top.charles7c.cnadmin.common.base.BaseMapper;
 import top.charles7c.cnadmin.system.model.entity.UserDO;
 
@@ -25,4 +35,23 @@ import top.charles7c.cnadmin.system.model.entity.UserDO;
  * @author Charles7c
  * @since 2022/12/22 21:47
  */
-public interface UserMapper extends BaseMapper<UserDO> {}
+public interface UserMapper extends BaseMapper<UserDO> {
+
+    @Override
+    @DataPermission
+    List<UserDO> selectList(@Param(Constants.WRAPPER) Wrapper<UserDO> queryWrapper);
+
+    @Override
+    @DataPermission
+    <P extends IPage<UserDO>> P selectPage(P page, @Param(Constants.WRAPPER) Wrapper<UserDO> queryWrapper);
+
+    /**
+     * 根据用户名查询
+     *
+     * @param username
+     *            用户名
+     * @return 用户信息
+     */
+    @Select("SELECT * FROM `sys_user` WHERE `username` = #{username}")
+    UserDO selectByUsername(@Param("username") String username);
+}
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
index cedf71fc..eaf95993 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
@@ -238,7 +238,7 @@ public class UserServiceImpl extends BaseServiceImpl<UserMapper, UserDO, UserVO,
 
     @Override
     public UserDO getByUsername(String username) {
-        return baseMapper.lambdaQuery().eq(UserDO::getUsername, username).one();
+        return baseMapper.selectByUsername(username);
     }
 
     @Override