Typo3 版本 8.x 异常"Connection pool was not found"

Question

我在typo3 8中使用查询构建器功能，现在我正在收到此例外。

下面是我的错误

Uncaught TYPO3 Exception Class 'TYPO3CMSCoreDatabaseConnectionPool' not found 

下面是我的源代码

use TYPO3CMSCoreDatabaseConnectionPool;
use TYPO3CMSCoreUtilityGeneralUtility;
*
*
*
public function getItems($Variable1,$Variable2)
{
   $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('tx_xxxxxx');
   $statement = $queryBuilder
      ->select('*')
      ->from('tx_xxxxxx AS txx')
      ->where(
          $queryBuilder->expr()->eq('txx.field_name_1',$Variable1),
          $queryBuilder->expr()->eq('txx.field_name_2',$Variable2)
      )
      ->execute();
   return $statement->fetch();
}

源代码有什么问题？

谢谢，

Answer 1

这可能是从类名称空间的起点缺少(Backslash(的原因。

尝试此GeneralUtility::makeInstance(TYPO3CMSCoreDatabaseConnectionPool::class);