修改console/controllers/InitController.php文件，将clearDb方法改为命令行可访问的actionClearDb方法

console/controllers/InitController.php

@@ -63,7 +63,7 @@ class InitController extends Controller {
      * TODO没有完善
      * 清空数据库
      */
-    public function clearDb() {
+    public function actionClearDb() {
         Yii::$app->db->createCommand("SET FOREIGN_KEY_CHECKS = 0;")->execute();
         $dbname = explode('=', explode(';', Yii::$app->db->dsn)[1])[1];
         $sql = "SELECT CONCAT('drop table ',table_name,';') FROM information_schema.`TABLES` WHERE table_schema='{$dbname}';";