~C

gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/controller/PayController.java

@@ -216,6 +216,14 @@ public class PayController extends BaseController
     @ApiOperation(value = "0元支付", notes = "兑换码支付", httpMethod = "POST")
     public AjaxResult test(@RequestBody UseExchangeArg useExchangeArg) throws ParseException {
         Long userId = useExchangeArg.getUserId();
+        AppOrder entity = new AppOrder();
+        entity.setLevel(1);
+        entity.setUserId(userId);
+        entity.setPayStatus(2);
+        List<AppOrder> list = appOrderMapper.selectAppOrderList(entity);
+        if (list != null && list.size() > 0) {
+            return AjaxResult.error(2001,"您已体验过7天无理由试用，不可重复试用！");
+        }
         // 生成订单信息
         AppOrder order = new AppOrder();
         order.setPrice("0");

gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/impl/AppEventsServiceImpl.java

@@ -1,5 +1,6 @@
 package com.ruoyi.app.service.impl;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -54,6 +55,8 @@ public class AppEventsServiceImpl implements IAppEventsService
             List<AppEventsUser> list = appEventsUserMapper.selectAppEventsUserList(appEventsUser);
             if (list != null && list.size() > 0) {
                 appEvents.setIds(list.stream().map(x->x.getEventsId()).distinct().collect(Collectors.toList()));
+            } else {
+                return new ArrayList<>();
             }
         }
         return appEventsMapper.selectAppEventsList(appEvents);