自生成的订单编号统一为9位(uuid的后9位)，由于真正的订单都是bean那边传入，pea这边的订单仅用于流程验证，碰撞概率很小

project-order/src/main/java/com/dituhui/pea/order/service/impl/OrderCreateServiceImpl.java

@@ -89,7 +89,8 @@ public class OrderCreateServiceImpl implements OrderCreateService {
         entity.setId(IdUtil.getSnowflake().nextIdStr());
         String orderId = req.getOrderId();
         if (StringUtils.isEmpty(orderId)) {
-            orderId = UUID.randomUUID().toString().replace("-", "");
+            String s = UUID.randomUUID().toString().replace("-", "");
+            orderId = s.substring(s.length()-9);
         }
         entity.setOrderId(orderId);
         entity.setName(req.getName());