最近有一个商城项目中有统计商品点击量和艺术家访问量的需求，但又不想改动太多原来的代码，而点击与访问这两个动作是有明确触发点的，正好可以用laravel中的事件系统来做，在点击和访问对应的函数中产生这俩事件，监视器获取到之后，再将记录保存到数据库中，并更新计数。
1、在 appProvidersEventServiceProvider
中注册监听器：
/** * The event listener mappings for the application. * * @var array */ protected $listen = [ ...... 'AppEventsStatistics' => [ 'AppListenersBehavioralStatistics', ], ...... ];
2、执行
php artisan event:generate
生成事件类与监听类
3、定义事件
<?phpnamespace AppEvents;use IlluminateBroadcastingChannel;use IlluminateQueueSerializesModels;use IlluminateBroadcastingPrivateChannel;use IlluminateBroadcastingPresenceChannel;use IlluminateFoundationEventsDispatchable;use IlluminateBroadcastingInteractsWithSockets;use IlluminateContractsBroadcastingShouldBroadcast;class Statistics{ use Dispatchable, InteractsWithSockets, SerializesModels; public $user; public $obj; /** * Create a new event instance. * * @return void */ public function __construct($user,$obj) { $this->user = $user; $this->obj = $obj; } /** * Get the channels the event should broadcast on. * * @return IlluminateBroadcastingChannel|array */ public function broadcastOn() { return new PrivateChannel('channel-name'); }}4、定义监听器：
<?phpnamespace AppListeners;use AppEventsStatistics;use AppSystemStaticsView;use IlluminateQueueInteractsWithQueue;use IlluminateContractsQueueShouldQueue;use IlluminateSupportFacadesLog;class BehavioralStatistics{ /** * Create the event listener. * * @return void */ public function __construct() { // } /** * Handle the event. * * @param Statistics $event * @return void */ public function handle(Statistics $event) { $obj_class = get_class($event->obj); $statics_view = new StaticsView; switch($obj_class){ case "AppUser": $statics_view->statics_type = 'user'; break; case "AppProduction": $statics_view->statics_type = 'production'; break; } $statics_view->ip = request()->getClientIp();; $statics_view->time_local = 0; $statics_view->statics_id = $event->obj->id; $statics_view->save(); }}5、触发事件：
event(new Statistics(user, user,user,production));
