refactor(SourceMapper): 优化查询条件动态拼接逻辑

- 使用<where>标签替换原有静态where条件
- 添加对scenicId、isBuy、type、faceId参数的动态判断
- 确保只有非空参数参与SQL查询条件构建
- 提高SQL语句可读性和维护性
- 避免因缺少条件导致的语法错误风险

src/main/resources/mapper/SourceMapper.xml

@@ -244,13 +244,12 @@
         select so.id, ms.scenic_id, device_id, thumb_url, url, ms.is_free, so.create_time, so.update_time, ms.is_buy, video_url
         from member_source ms
                  left join source so on ms.source_id = so.id
-                 
-        where
-            ms.member_id = #{memberId} and so.id is not null
+        <where>
             <if test="scenicId!= null">and ms.scenic_id = #{scenicId} </if>
             <if test="isBuy!=null">and ms.is_buy = #{isBuy} </if>
             <if test="type!=null">and ms.type = #{type} </if>
             <if test="faceId!=null">and ms.face_id = #{faceId} </if>
+        </where>
         order by ms.is_free desc, so.create_time asc
     </select>