苍穹外卖--POI的入门案例-读写操作

sky-server/src/main/resources/mapper/DishMapper.xml

@@ -64,4 +64,16 @@
         </where>
         order by create_time desc
     </select>
+
+    <select id="countByMap" resultType="java.lang.Integer">
+        select count(id) from dish
+        <where>
+            <if test="status != null">
+                and status = #{status}
+            </if>
+            <if test="categoryId != null">
+                and category_id = #{categoryId}
+            </if>
+        </where>
+    </select>
 </mapper>