排序值不重复

@@ -23,5 +23,5 @@ public interface SaleCategoryMapper {
 
     List<SaleCategory> selectAll();
 
-
+    List<SaleCategory> selectByPidAndOrderBy(@Param("pid") Integer pid, @Param("orderBy") Integer orderBy);
 }

@@ -65,6 +65,10 @@
         select <include refid="Base_Column_List" />
         from sale_category where id = #{id}
     </select>
+    <select id="selectByPidAndOrderBy" resultMap="BaseResultMap">
+        select <include refid="Base_Column_List" />
+        from sale_category where parent_id = #{pid} and order_by=#{orderBy}
+    </select>
 
     <select id="selectByNameAndParentId" resultMap="BaseResultMap">
         select <include refid="Base_Column_List" />

@@ -84,6 +84,9 @@ public class SaleCategoryServiceImpl implements ISaleCategoryService {
                 // 一级层级
                 saleCategory.setLevel(PRODUCT_SORT_LEVEL_1);
                 saleCategory.setParentId(TOP_PARENT_ID);
+                if (!saleCategoryMapper.selectByPidAndOrderBy(TOP_PARENT_ID, saleCategory.getOrderBy()).isEmpty()) {
+                    throw new CommonException(201, "排序已存在：" + saleCategory.getOrderBy());
+                }
                 if(StringUtils.equals(saleCategoryResponseBo.getLinkType(), "on")) {
                 	saleCategory.setLinkType("series");
                 } else {
@@ -95,6 +98,9 @@ public class SaleCategoryServiceImpl implements ISaleCategoryService {
                 if(saleCategoryParent==null){
                     throw new CommonException(201, "父类销售类目找不到!");
                 }
+                if (!saleCategoryMapper.selectByPidAndOrderBy(saleCategory.getParentId(), saleCategory.getOrderBy()).isEmpty()) {
+                    throw new CommonException(201, "排序已存在：" + saleCategory.getOrderBy());
+                }
                 saleCategory.setLevel(saleCategoryParent.getLevel()+1);
             }
             saleCategory.setStatus(1);//新创建的默认为“关闭”
@@ -113,6 +119,12 @@ public class SaleCategoryServiceImpl implements ISaleCategoryService {
             if(db_saleCategory==null){
                 throw new CommonException(201, "找不到销售类目!");
             }
+
+            List<SaleCategory> exists = saleCategoryMapper.selectByPidAndOrderBy(db_saleCategory.getParentId(), saleCategory.getOrderBy());
+            if (exists.size() > 1 || (exists.size() == 1 && !exists.get(0).getId().equals(saleCategory.getId()))) {
+                throw new CommonException(201, "排序已存在：" + saleCategory.getOrderBy());
+            }
+
             db_saleCategory.setCategoryName(saleCategory.getCategoryName());
             db_saleCategory.setOrderBy(saleCategory.getOrderBy());
             db_saleCategory.setImageUrl(saleCategory.getImageUrl());