我想以一种特殊的方式格式化表和长表：
1）table/longtable 应该位于页面的中心
2）表格/长表格标题应位于左右表格/长表格宽度之间；还应与对象的左边缘对齐。
在环境中使用\centering命令\table满足第一个要求（longtable 默认居中）
我找到了一种满足表格第二个要求的方法 - 使用\usepackage{floatrow}并重新格式化所有表格\ttabbox{}{}。但有两个缺点：
我不知道如何将它与 longtable 一起使用
\usepackage{floatrow}使长表位于页面左侧
提供了最少的示例。
\documentclass[12pt, a4paper, final, oneside, titlepage]{article}
\usepackage{caption}
\usepackage{longtable}
%\usepackage{float}
%\usepackage{floatrow}
\begin{document}
Table should be positioned at the center of the page, and caption should be positioned between left and right edge of table (aligned to left edge)
\begin{table}[h!]
\centering
\caption{Very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very long caption}
\begin{tabular}{|c|c|p{8cm}|}
\hline
a & b & c \\ \hline
1 & 2 & 3 \\ \hline
\end{tabular}
\end{table}
Longtable should positioned at the center of the page, and caption should be positioned between left and right edge of table (aligned to left edge)
\begin{longtable}[h!]{|p{5cm}|p{3cm}|}
\caption{Very, very, very, very, very, very, very, very very, very, very, very, very, very, very long caption} \\
\hline
a & b \\ \hline
\endfirsthead
\multicolumn{2}{l}{Short caption} \\
\hline
a & b \\ \hline
\endhead
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
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Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
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Some string & c \\ \hline
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Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
Some string & c \\ \hline
\end{longtable}
\end{document}