public function openMail()
 {
     $page = Verif::canshu(I('page'), "page", false, 'int');
     //验证
     // $da['id']=109;
     $config = array('tablename' => 'OpenMail', 'order' => 'id desc', 'page' => $page, 'num' => 1);
     $pageData = new Page($config);
     $data = $pageData->getOne();
     if (intval($page) > $data['tongji']['count_page']) {
         $this->ajaxReturn(["zhuangtai" => 0, "tishi" => "没有了", "data" => $data]);
     } else {
         $data['data']['user'] = Qita::findUser($data['data']['user_id']);
         $this->ajaxReturn(["zhuangtai" => 1, "tishi" => "公开信获取成功", "data" => $data]);
     }
     //dump($page);
 }