如何仅更改章节标题和小节的字体？

Question

我正在尝试更改章节标题和小节的字体，但网上的所有示例都无法正常工作。这是我当前的代码及其生成的排版。如何更改标题和小节的字体？例如，我想将标题和小节的字体设置为 Arial，以将正文字体保留为 Palatino。

\documentclass[12pt]{memoir}
\usepackage{fontspec}\setmainfont{Palatino}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{csquotes}
\usepackage{endnotes}
\usepackage{imakeidx}\makeindex[columns=3, title=Alphabetical Index]
\usepackage[
    backend=biber,
    style=authortitle,
    citestyle=authortitle
]{biblatex}\addbibresource{sample.bib}
\usepackage[explicit]{titlesec}
\titleformat{\chapter}[display]{\bfseries\centering}{\huge\thechapter}{1em}{\Huge #1}

\begin{document}

\setlength{\bibhang}{0pt}
\setlength\bibitemsep{\baselineskip}

\frontmatter
\maketitle
\tableofcontents

\mainmatter
\include{./TeX_files/introduction}
\include{./TeX_files/chapter01}

\theendnotes
\printbibliography

\backmatter
\printindex

\end{document}

Answer 1

titlesec我已通过和包将章节和小节标题更改为 Arial fontspec。我还注释掉了一些代码，以便代码可以在我的机器上运行。

\documentclass[12pt]{memoir}
\usepackage{blindtext}
\usepackage{fontspec}
\setmainfont{TeX Gyre Pagella}%I don't have Palatino.
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{csquotes}
%\usepackage{endnotes}
\usepackage{imakeidx}\makeindex[columns=3, title=Alphabetical Index]
\usepackage[
    backend=biber,
    style=authortitle,
    citestyle=authortitle
]{biblatex}\addbibresource{sample.bib}
\usepackage[explicit]{titlesec}
\newfontfamily{\arialfont}{Arial Nova}
\titleformat{\chapter}%
    [display]%
    {%
        \bfseries%
        \centering%
        \arialfont%
    }%
    {\huge\thechapter}%
    {1em}%
    {\Huge #1}
\titleformat{\subsection}
    [display]
    {%
        \bfseries%
        \arialfont%
    }
    {\thesubsubsection}
    {}
    {#1}
\title{Title}
\author{Author}
\begin{document}

\setlength{\bibhang}{0pt}
\setlength\bibitemsep{\baselineskip}

\frontmatter
\maketitle
\tableofcontents

\mainmatter
%\include{./TeX_files/introduction}
%\include{./TeX_files/chapter01}
\blinddocument

%\theendnotes
%\printbibliography

\backmatter
\printindex

\end{document}