几个月前我遇到了同样的问题.现在我必须说我不是typo3 开发人员，所以我不知道这是否是正确的解决方案.

I had the same problem a couple of months ago. Now I must say that I am no typo3 developer, so I don't know if this is the right solution.

但我使用了这样的东西:

But I used something like this:

$output .= $this->pi_RTEcssText( $contentFromDb );

在我的扩展程序中，它可以工作.

in my extension and it works.