将表格置于表格内的表格中央

Question

这听起来很奇怪，但我需要单元格拆分。我如何才能垂直和水平居中此 MWE 中的内容：

\begin{table*}[htbp]
\centering
\caption{MWE}
\begin{tabular}{l|l|l|l|l}
\hline\noalign{\smallskip}

&  & Does this really work & this & way? \\ \hline

\noalign{\smallskip}\hline\noalign{\smallskip}

Testing centering & 
\begin{tabular}{c} This \\ \hline is a \\ \hline test \end{tabular} &
\begin{tabular}{c} 1 \\ \hline 2 \\ \hline 3 \end{tabular} &
\begin{tabular}{c} oneoneone \\ \hline twotwotwo \\ \hline threethreethree \end{tabular} &
\begin{tabular}{c} 4 \\ \hline 5 \\ \hline 6 \end{tabular} \\ \hline

\noalign{\smallskip}\hline
\end{tabular}
\end{table*}

如果你看一下，你会发现 1|2|3 以及其他单元格内容没有居中。我也尝试过\centering围绕\begin{center}单元格，但没有成功。我遗漏了什么？

谢谢！

Answer 1

关于单元格内容的居中，您已在上面的评论中找到解决方案。因此，我仅建议使用包\makecell中的宏\makecell而不是嵌套表：

\documentclass[a4paper,11pt]{scrbook}
\usepackage[utf8]{inputenc}
\usepackage{booktabs,makecell}

\begin{document}

\begin{table*}[htb]
    \centering
\caption{MWE}
    \begin{tabular}{*{5}{c}}
    \toprule
&   &   Does this really work & this & way?     \\
    \midrule
Testing centering &
\makecell{This \\ 
          is a \\ 
          test} 
    &   \makecell{1 \\
                  2 \\ 
                  3} 
        &   \makecell{oneoneone \\
                      twotwotwo  \\ 
                      threethreethree} 
            &   \makecell{4 \\ 
                          5 \\ 
                          6}                        \\ 
    \bottomrule
\end{tabular}
    \end{table*}
\end{document}

我还\hline用包中的规则替换了您的构造booktabs并删除了垂直线。Meany 认为这样的表格设计很“专业”：