一：在配置文件的log组件中配置DbTarget

'log' => [ 'traceLevel' => YII_DEBUG ? 3 : 0, 'targets' => [ [ 'class' => 'yii\log\FileTarget', 'levels' => ['error', 'warning'], ], 'test' => [ 'class' => 'yii\log\DbTarget',//DaTarget类 'logTable' => '{{%test_log}}',//日志表 'levels' => ['error', 'info', 'warning'],//日志等级 ], ],],

二：生成日志表

在项目目录下执行如下命令生成日志表

php yii migrate --migrationPath=@yii/log/migrations/

三：使用日志

在需要使用日志的地方使用

Yii::info()

四：自定义DbTarget日志

1：首先创建一个自定义的日志表

(1)在项目目录下执行

php yii migrate/create create_test_log

(2)：在创建的migrate文件下编写创建数据库的迁移脚本

<?phpuse yii\db\Migration;/** * Class m200720_091126_create_test_log */class m200720_091126_create_test_log extends Migration{ /** * {@inheritdoc} */ public function safeUp() { $this->createTable('{{%test_log}}', [ 'id' => $this->bigPrimaryKey(), 'level' => $this->integer()->notNull()->comment('日志等级'), 'category' => $this->string(100)->notNull()->comment('分类名称'), 'prefix' => $this->text(), 'route' => $this->string(100)->notNull()->comment('路由'), 'method' => $this->string(20)->notNull()->comment('请求方式'), 'app' => $this->string(20)->comment('请求应用'), 'module' => $this->string(20)->comment('请求模块'), 'request' => $this->text()->comment('请求参数'), 'status' => $this->string(10)->notNull()->comment('状态码'), 'message' => $this->text()->comment('日志内容'), 'request_at' => $this->double()->notNull()->comment('请求时间'), 'ip' => $this->string(63)->comment('请求IP'), ], 'CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci ENGINE=InnoDB COMMENT=\'请求日志表\''); //增加索引 $this->createIndex('idx_log_level', '{{%test_log}}', 'level'); $this->createIndex('idx_log_category', '{{%test_log}}', 'category'); $this->createIndex('idx_log_route', '{{%test_log}}', 'route'); $this->createIndex('idx_log_method', '{{%test_log}}', 'method'); $this->createIndex('idx_log_status', '{{%test_log}}', 'status'); } /** * @inheritdoc */ public function safeDown() { $this->dropTable('{{%test_log}}'); }}

(3)：执行如下命令生成DbTarget日志表

php yii migrate

2：编写一个DbTarget类来继承yiilogDbTarget类

<?phpnamespace app\components;use Yii;use yii\helpers\VarDumper;use yii\log\LogRuntimeException;use yii\web\HttpException;use yii\web\Request;/** * DbTarget stores log messages in a database table. * * @see yii\log\DbTarget * * @author wangjian * @since 1.0 */class DbTarget extends \yii\log\DbTarget{ /** * @inheritdoc */ public $categories = [ 'application', 'yii\web\HttpException:*', ]; /** * @inheritdoc */ public $except = [ // 'yii\web\HttpException:404', ]; /** * @inheritdoc */ public $logVars = ['_GET', '_POST']; /** * @var string 用户组件ID */ public $userComponentId = 'user'; /** * @inheritdoc */ public function collect($messages, $final) { $this->messages = array_merge($this->messages, static::filterMessages($messages, $this->getLevels(), $this->categories, $this->except)); $count = count($this->messages); if ($count > 0 && ($final || $this->exportInterval > 0 && $count >= $this->exportInterval)) { $oldExportInterval = $this->exportInterval; $this->exportInterval = 0; $this->export(); $this->exportInterval = $oldExportInterval; $this->messages = []; } } /** * @inheritdoc */ public function getMessagePrefix($message) { if ($this->prefix !== null) { return call_user_func($this->prefix, $message); } if (Yii::$app === null) { return ''; } $ip = $this->getIp(); $ip = empty($ip) ? '-' : $ip; return "[$ip]"; } /** * @inheritdoc */ public function export() { if ($this->db->getTransaction()) { $this->db = clone $this->db; } $tableName = $this->db->quoteTableName($this->logTable); $sql = "INSERT INTO $tableName ([[level]], [[category]], [[prefix]], [[route]], [[method]], [[app]], [[module]], [[request]], [[status]], [[message]], [[request_at]], [[ip]]) VALUES (:level, :category, :prefix, :route, :method, :app, :module, :request, :status, :message, :request_at, :ip)"; $command = $this->db->createCommand($sql); $request = Yii::$app->getRequest(); list($route, $params) = $request->resolve(); $method = $request->getMethod(); $module = Yii::$app->controller->module->id; $route = str_replace("{$module}/", '', $route); foreach ($this->messages as $message) { list($text, $level, $category, $timestamp) = $message; $statusCode = 200; if (!is_string($text)) { if ($text instanceof \Throwable || $text instanceof \Exception) { $statusCode = $text instanceof HttpException ? $text->statusCode : 500; $text = $text->getMessage(); } else { $text = VarDumper::export($text); } } if ($command->bindValues([ ':level' => $level, ':category' => $category, ':prefix' => $this->getMessagePrefix($message), ':route' => $route, ':method' => $method, ':app' => Yii::$app->id, ':module' => $module, ':request' => $this->getContextMessage(), ':status' => $statusCode, ':message' => $text, ':request_at' => $timestamp, ':ip' => $this->getIp(), ])->execute() > 0) { continue; } throw new LogRuntimeException('Unable to export log through database!'); } } /** * 获取当前IP */ protected function getIp() { $request = Yii::$app->getRequest(); return $request instanceof Request ? $request->getUserIP() : ''; }}

3：在配置文件中将yiilogDbTarget类改成我们自定义的类

'log' => [ 'traceLevel' => YII_DEBUG ? 3 : 0, 'targets' => [ [ 'class' => 'yii\log\FileTarget', 'levels' => ['error', 'warning'], ], 'test' => [ 'class' => 'app\components\DbTarget', 'logTable' => '{{%test_log}}', 'levels' => ['error', 'info', 'warning'], ], ],],

4：使用DbTarget日志

同样的使用Yii::info来记录日志

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