ExtBase: JSON-Ausgabe erstellen und verwenden

ext_localconf.php

<?php

defined('TYPO3_MODE') or die();
\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin('Trafo2.'.$_EXTKEY, 'JsonList', [ 'Json' =-->'findJsonData' ], [ 'Json' => 'findJsonData' ]);

Controller-Action (JsonController.php)

<?php

/**
 * @var \Trafo2\T2Extension\Domain\Repository\JsonDataRepository * @inject
*/
protected $jsonDataRepository;
 
public function findJsonDataAction(){
    $jsonData = $this->jsonDataRepository->findAll()->toArray();
    return json_encode($jsonData);
}

TS-Setup

myJson = PAGE
myJson {
typeNum = 112233
config {
        additionalHeaders = Content-Type: application/json
        additionalHeaders.10.header = Content-Type: application/json
        no_cache = 1
        disableAllHeaderCode = 1
        disablePrefixComment = 1
        xhtml_cleaning = 0
        admPanel = 0
        debug = 0
    }
    10 = USER_INT
    10 {
        userFunc = TYPO3\CMS\Extbase\Core\Bootstrap->run
        pluginName = JsonPlugin
        vendorName = Trafo2
        extensionName = T2Extension
        controller = Json
        switchableControllerActions {
            Json{
                1 = jsonData
            }
        }
        features.requireCHashArgumentForActionArguments = 0
    }
}