diff --git a/src/main/resources/mapper/CategoryMybatisMapper.xml b/src/main/resources/mapper/CategoryMybatisMapper.xml
new file mode 100644
index 0000000..1a8e7e0
--- /dev/null
+++ b/src/main/resources/mapper/CategoryMybatisMapper.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<!-- 修改1：使用全限定类名 -->
+<mapper namespace="edu.bjtu.groupone.backend.mapper.CategoryMybatisMapper">
+
+    <!-- 查询所有分类 -->
+    <select id="findAll"
+            resultType="edu.bjtu.groupone.backend.domain.entity.Category">
+        SELECT * FROM categories
+    </select>
+
+    <!-- 根据父分类ID查询 -->
+    <select id="findByParentId" parameterType="Long"
+            resultType="edu.bjtu.groupone.backend.domain.entity.Category">
+        SELECT * FROM categories WHERE parent_id = #{parentId}
+    </select>
+
+</mapper>
\ No newline at end of file
diff --git a/src/main/resources/mapper/WorkMybatisMapper.xml b/src/main/resources/mapper/WorkMybatisMapper.xml
new file mode 100644
index 0000000..dd0d444
--- /dev/null
+++ b/src/main/resources/mapper/WorkMybatisMapper.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="edu.bjtu.groupone.backend.mapper.WorkMybatisMapper">
+
+    <!-- 结果集映射 -->
+    <resultMap id="WorkResultMap" type="Work">
+        <id property="id" column="id"/>
+        <result property="title" column="title"/>
+        <result property="description" column="description"/>
+        <result property="categoryId" column="category_id"/>
+        <result property="createTime" column="create_time"/>
+    </resultMap>
+
+    <!-- 查询所有作品 -->
+    <select id="findAll" resultMap="WorkResultMap">
+        SELECT id, title, description, category_id, create_time
+        FROM works
+    </select>
+
+    <!-- 根据分类ID列表分页查询 -->
+    <select id="findByCategoryIdIn" resultMap="WorkResultMap">
+        SELECT * FROM works
+        <where>
+            <if test="categoryIds != null and categoryIds.size() > 0">
+                category_id IN
+                <foreach item="categoryId" collection="categoryIds"
+                         open="(" separator="," close=")">
+                    #{categoryId}
+                </foreach>
+            </if>
+        </where>
+        ORDER BY create_time DESC
+        LIMIT #{pageable.pageSize} OFFSET #{pageable.offset}
+    </select>
+
+</mapper>
\ No newline at end of file