如何在LaTeX中将目录的标题居中？

\documentclass{article}

\usepackage{tocloft}

\renewcommand{\cfttoctitlefont}{\hfill\Huge\bfseries\centering}
\renewcommand{\cftaftertoctitle}{\hfill}

\begin{document}

\tableofcontents

\section{Section 1}
\subsection{Subsection 1.1}
\subsection{Subsection 1.2}

\section{Section 2}
\subsection{Subsection 2.1}
\subsection{Subsection 2.2}

\end{document}