src/main/java/com/g9/g9backend/service/InvitationService.java

package com.g9.g9backend.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.g9.g9backend.pojo.Invitation;

public interface InvitationService extends IService<Invitation> {

    // 定义生成邀请码的方法
    String[] generateInvitationCode();
}