在Yii2中获取JSON格式的响应

use yii\web\Controller;
use yii\web\Response;

class SiteController extends Controller
{
    public function actionJsonResponse()
    {
        // 获取需要返回的数据
        $data = [
            'name' => 'John Doe',
            'age' => 30,
            'email' => 'johndoe@example.com'
        ];

        // 创建一个响应对象
        $response = Yii::$app->response;
        
        // 设置响应的数据
        $response->format = Response::FORMAT_JSON;
        $response->data = $data;
        
        // 设置响应的Content-Type
        $response->headers->add('Content-Type', 'application/json');
        
        // 返回响应对象
        return $response;
    }
}