first commit

src/main/java/com/greenorange/promotion/constant/CommonConstant.java

@@ -0,0 +1,18 @@
+package com.greenorange.promotion.constant;
+
+/**
+ * 通用常量
+ */
+public interface CommonConstant {
+
+    /**
+     * 升序
+     */
+    String SORT_ORDER_ASC = "ascend";
+
+    /**
+     * 降序
+     */
+    String SORT_ORDER_DESC = " descend";
+    
+}