订单按条件总和金额

src/main/java/cn/chjyj/szwh/mapper/OrderMapper.java

@@ -4,6 +4,7 @@ import cn.chjyj.szwh.bean.Order;
 import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Component;
 
+import java.math.BigDecimal;
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
@@ -67,9 +68,9 @@ public interface OrderMapper {
     int countOrderByStatus(int status);
 
     /**
-     * 根据条件统计订单
-     * @param cmap
+     * 计算条件订单总额,返回 BigDecimal
+     * @param cmap  ( 字段、条件 field,condition)
      * @return
      */
-    int sumOrderByMap(Map cmap);
+    BigDecimal sumOrderByMap(@Param("cmap") Map cmap);
 }

src/main/java/cn/chjyj/szwh/service/impl/IndexServiceImpl.java

@@ -63,8 +63,7 @@ public class IndexServiceImpl implements IndexService {
         //交易总额
         result.put("deal_money",goodsCount);
 
-
-
+        //订单总额
         result.put("order_money",goodsCount);
 
         result.put("shelf_count",goodsCount);

src/main/resources/mapper/szwh/OrderMapper.xml

@@ -68,6 +68,11 @@
         select count(*) from <include refid="tbName"/> where `status`=#{status}
     </select>
 
+    <!-- 条件订单总额 -->
+    <select id="sumOrderByMap" parameterType="java.util.Map" resultType="java.lang.Double">
+        select sum(#{cmap.field}) from <include refid="tbName"/> where #{cmap.wherestr};
+    </select>
+
     <!--新增用户-->
     <insert id="addUser" parameterType="cn.chjyj.szwh.bean.Goods" useGeneratedKeys="true" keyColumn="uid">
         insert into

src/test/java/cn/chjyj/szwh/mapper/OrderMapperTest.java

@@ -9,6 +9,7 @@ import org.springframework.test.annotation.Rollback;
 import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.math.BigDecimal;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.HashMap;
@@ -97,4 +98,17 @@ public class OrderMapperTest {
         int ret = orderMapper.countOrderByStatus(status);
         System.out.println(ret);
     }
+
+    @Test
+    public void mapSumTest(){
+        String starttime ="2022-05-18 00:00:00";
+        String endtime="2022-05-18 23:59:59";
+        String swhere ="(paymenttime between "+starttime+" and "+endtime+") " +
+                "and pay_status=2";
+        Map xmap =new HashMap();
+        xmap.put("field","total_money");
+        xmap.put("wherestr",swhere);
+        BigDecimal bd= orderMapper.sumOrderByMap(xmap);
+        System.out.println(bd);
+    }
 }