如何在LaTex中的两个节点之间绘制水平箭头？

\usepackage{tikz}

\begin{tikzpicture}
  % 绘图命令将放在这里
\end{tikzpicture}

\node (node1) at (0,0) {节点1};
\node (node2) at (2,0) {节点2};

\draw[->] (node1) -- (node2);

\documentclass{article}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
  \node (node1) at (0,0) {节点1};
  \node (node2) at (2,0) {节点2};
  \draw[->] (node1) -- (node2);
\end{tikzpicture}
\end{document}