..

src/main/java/io/renren/modules/app/controller/AppMeetingController.java

    public R contact(@PathVariable("id") Long id) {
        MeetingEntity meeting = meetingService.getById(id);
        String contactIds = meeting.getContactIds();
        if(contactIds == null) {
            return R.ok().put("list", null);
        }
        List<Map<String, Object>> list = employeeService.getContact(contactIds);
        return R.ok().put("list", list);