Merge branch 'dev'

src/main/java/com/izouma/nineth/service/EventMgmtService.java

@@ -47,7 +47,7 @@ public class EventMgmtService {
     @Data
     @AllArgsConstructor
     @NoArgsConstructor
-    public class VipPointDTO {
+    public static class VipPointDTO {
         @ExcelProperty("用户ID")
         private Long userId;