团购劵管理一个美团优惠券应该只能绑定一个规则

share-system/src/main/java/share/system/mapper/SCouponMapper.java

@@ -66,4 +66,6 @@ public interface SCouponMapper
     List<SCoupon> listDuration(SCoupon sCoupon);
 
     List<SCoupon> selectSCouponByDealgroupId(Long dealgroupId);
+
+    SCoupon selectByDealgroupId(Long dealgroupId);
 }

share-system/src/main/java/share/system/service/impl/SCouponServiceImpl.java

@@ -95,8 +95,12 @@ public class SCouponServiceImpl implements ISCouponService {
         sCoupon.setMaxDuration(DEFAULT_MAX_DURATION);
         sCoupon.setMinPrice(new BigDecimal("0.00"));
         sCoupon.setCreateTime(DateUtils.getNowDate());
-
-        return sCouponMapper.insertSCoupon(sCoupon);
+        SCoupon sCouponList = sCouponMapper.selectByDealgroupId(sCoupon.getDealgroupId());
+        if (ObjectUtils.isEmpty(sCouponList)) {
+            return sCouponMapper.insertSCoupon(sCoupon);
+        } else {
+            throw new RuntimeException("该团购已存在");
+        }
     }
 
     /**
@@ -108,7 +112,12 @@ public class SCouponServiceImpl implements ISCouponService {
     @Override
     public int updateSCoupon(SCoupon sCoupon) {
         sCoupon.setUpdateTime(DateUtils.getNowDate());
-        return sCouponMapper.updateSCoupon(sCoupon);
+        SCoupon sCouponList = sCouponMapper.selectByDealgroupId(sCoupon.getDealgroupId());
+        if (ObjectUtils.isEmpty(sCouponList)) {
+            return sCouponMapper.updateSCoupon(sCoupon);
+        } else {
+            throw new RuntimeException("该团购已存在");
+        }
     }
 
     /**

share-system/src/main/resources/mapper/system/SCouponMapper.xml

@@ -105,6 +105,10 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <include refid="selectSCouponVo"/>
         where dealgroup_id = #{dealgroupId}
     </select>
+    <select id="selectByDealgroupId" resultMap="SCouponResult">
+        <include refid="selectSCouponVo"/>
+        where dealgroup_id = #{dealgroupId}
+    </select>
 
     <insert id="insertSCoupon" parameterType="SCoupon" useGeneratedKeys="true" keyProperty="id">
         insert into s_coupon