feat(wms): 新增合同挂接钢卷统计功能

- 在IWmsCoilContractRelService接口中添加queryContractCoilStatistics方法
- 在WmsCoilContractRelController控制器中添加统计查询和导出接口
- 在WmsCoilContractRelMapper中添加selectContractCoilStatistics查询方法
- 实现合同挂接钢卷统计的SQL查询逻辑，支持多条件筛选
- 创建ContractCoilStatisticsBo查询对象和ContractCoilStatisticsVo视图对象
- 开发前端统计页面，包含搜索筛选、统计卡片、图表展示和数据表格
- 集成ECharts实现合同状态分布饼图和销售员挂接钢卷柱状图
- 实现统计数据的Excel导出功能
- 添加响应式设计适配移动端显示

klp-wms/src/main/resources/mapper/klp/WmsCoilContractRelMapper.xml

@@ -154,4 +154,49 @@
         LIMIT 1
     </select>
 
+    <!-- 合同挂接钢卷统计：LEFT JOIN 合同 + 关联表 + 钢卷，按合同分组统计 -->
+    <select id="selectContractCoilStatistics" resultType="com.klp.domain.vo.ContractCoilStatisticsVo">
+        SELECT
+            co.order_id AS orderId,
+            co.order_code AS orderCode,
+            co.contract_code AS contractCode,
+            co.contract_name AS contractName,
+            co.customer,
+            co.supplier,
+            co.salesman,
+            co.status,
+            co.order_amount AS orderAmount,
+            co.sign_time AS signTime,
+            co.delivery_date AS deliveryDate,
+            COUNT(rel.coil_id) AS coilCount,
+            IFNULL(SUM(mc.net_weight), 0) AS totalNetWeight,
+            IFNULL(SUM(mc.gross_weight), 0) AS totalGrossWeight
+        FROM crm_order co
+        LEFT JOIN wms_coil_contract_rel rel ON co.order_id = rel.contract_id AND rel.del_flag = 0
+        LEFT JOIN wms_material_coil mc ON rel.coil_id = mc.coil_id AND mc.del_flag = 0
+        WHERE co.del_flag = 0
+        <if test="bo.contractCode != null and bo.contractCode != ''">
+            AND co.contract_code LIKE CONCAT('%', #{bo.contractCode}, '%')
+        </if>
+        <if test="bo.contractName != null and bo.contractName != ''">
+            AND co.contract_name LIKE CONCAT('%', #{bo.contractName}, '%')
+        </if>
+        <if test="bo.customer != null and bo.customer != ''">
+            AND co.customer LIKE CONCAT('%', #{bo.customer}, '%')
+        </if>
+        <if test="bo.salesman != null and bo.salesman != ''">
+            AND co.salesman LIKE CONCAT('%', #{bo.salesman}, '%')
+        </if>
+        <if test="bo.status != null">
+            AND co.status = #{bo.status}
+        </if>
+        <if test="bo.orderCode != null and bo.orderCode != ''">
+            AND co.order_code LIKE CONCAT('%', #{bo.orderCode}, '%')
+        </if>
+        GROUP BY co.order_id, co.order_code, co.contract_code, co.contract_name,
+                 co.customer, co.supplier, co.salesman, co.status,
+                 co.order_amount, co.sign_time, co.delivery_date
+        ORDER BY coilCount DESC, co.order_id ASC
+    </select>
+
 </mapper>