Yii使用DbTarget实现日志功能的示例代码

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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