PHP学习：利用Laravel事件系统如何实现登录日志的记录详解

protected $listen = [ 
  ...,
  //添加登录事件及对应监听器,一个事件可绑定多个监听器
  'App\Events\LoginEvent' => [
  'App\Listeners\LoginListener',
 ],
];

namespace App\Events;
use Illuminate\Broadcasting\Channel; 
use Illuminate\Queue\SerializesModels; 
use Illuminate\Broadcasting\PrivateChannel; 
use Illuminate\Foundation\Events\Dispatchable; 
use Illuminate\Broadcasting\InteractsWithSockets;
use App\Models\User; 
use Jenssegers\Agent\Agent;
class LoginEvent 
{
 use Dispatchable, InteractsWithSockets, SerializesModels;
 /**
 * @var User 用户模型
 */
 protected $user;
 /**
 * @var Agent Agent对象
 */
 protected $agent;
 /**
 * @var string IP地址
 */
 protected $ip;
 /**
 * @var int 登录时间戳
 */
 protected $timestamp;
 /**
 * 实例化事件时传递这些信息
 */
 public function __construct($user, $agent, $ip, $timestamp)
 {
 $this->user = $user;
 $this->agent = $agent;
 $this->ip = $ip;
 $this->timestamp = $timestamp;
 }
 public function getUser()
 {
 return $this->user;
 }
 public function getAgent()
 {
 return $this->agent;
 }
 public function getIp()
 {
 return $this->ip;
 }
 public function getTimestamp()
 {
 return $this->timestamp;
 }
 /**
 * Get the channels the event should broadcast on.
 *
 * @return Channel|array
 */
 public function broadcastOn()
 {
 return new PrivateChannel('channel-default');
 }
} 

namespace App\Listeners;
use App\Events\LoginEvent;
class LoginListener 
{
 // handle方法中处理事件
 public function handle(LoginEvent $event)
 {
 //获取事件中保存的信息
 $user = $event->getUser();
 $agent = $event->getAgent();
 $ip = $event->getIp();
 $timestamp = $event->getTimestamp();
 //登录信息
 $login_info = [
  'ip' => $ip,
  'login_time' => $timestamp,
  'user_id' => $user->id
 ];
 // zhuzhichao/ip-location-zh 包含的方法获取ip地理位置
 $addresses = \Ip::find($ip);
 $login_info['address'] = implode(' ', $addresses);
 // jenssegers/agent 的方法来提取agent信息
 $login_info['device'] = $agent->device(); //设备名称
 $browser = $agent->browser();  
 $login_info['browser'] = $browser . ' ' . $agent->version($browser); //浏览器
 $platform = $agent->platform();
 $login_info['platform'] = $platform . ' ' . $agent->version($platform); //操作系统
 $login_info['language'] = implode(',', $agent->languages()); //语言
 //设备类型
 if ($agent->isTablet()) {
  // 平板
  $login_info['device_type'] = 'tablet';
 } else if ($agent->isMobile()) {
  // 便捷设备
  $login_info['device_type'] = 'mobile';
 } else if ($agent->isRobot()) {
  // 爬虫机器人
  $login_info['device_type'] = 'robot';
  $login_info['device'] = $agent->robot(); //机器人名称
 } else {
  // 桌面设备
  $login_info['device_type'] = 'desktop';
 }
 //插入到数据库
 DB::table('login_log')->insert($login_info);
 } 
}

namespace App\Controllers; 
...
use App\Events\LoginEvent; 
use Jenssegers\Agent\Agent; 
class AuthControoler extends Controller 
{
 ...
 public function login(Request $request)
 {
 //登录实现
 ...
 //登录成功,触发事件
 event(new LoginEvent($this->guard()->user(), new Agent(), \Request::getClientIp(), time()));
 ... 
 } 
} 

namespace App\Listeners; 
...
use Illuminate\Contracts\Queue\ShouldQueue; 
class LoginListener implements ShouldQueue 
{
 /**
 * 失败重试次数
 * @var int
 */
 public $tries = 1;
 ...
}