缺少\end{document} ```cpp \documentclass{article} \usepackage{listings} \begin{document} \begin{lstlisting} public static void main(String[] args) { System.out.println("Hello World"); } \end{lstlisting} \end{document} ```  没有设置lst, ```cpp \documentclass{article} \usepackage{listing} \begin{document} \begin{listing} public static void main(String[] args) { System.out.println("Hello World"); } \end{listing} \end{document} ``` 设置lst，例子如下： ```cpp \documentclass{article} \usepackage{tcolorbox} \tcbuselibrary{listings} \lstdefinestyle{mystyle}{ basicstyle=% \ttfamily \lst@ifdisplaystyle\small\fi } \lstset{basicstyle=\ttfamily,style=mystyle} \definecolor{structurecolor}{RGB}{0,120,2}% \definecolor{winered}{rgb}{0.5,0,0} \definecolor{lightgrey}{rgb}{0.9,0.9,0.9} \definecolor{frenchplum}{RGB}{190,20,83} \lstset{language=[LaTeX]TeX, texcsstyle=*\color{magenta}, numbers=left, numberstyle=\tiny\color{blue}, stepnumber=1, numbersep=5pt, breaklines=true, basicstyle=\scriptsize\ttfamily\color{blue!80!black}, keywordstyle=\color{magenta}, commentstyle=\color{gray}, morestring=[s][\bfseries\color{blue!40}]{\[}{\]}, morestring=[s][\bfseries\color{cyan}]{\{}{\}}, %morestring=[s][\bfseries\color{violet}]{(}{)}, emph={main,none,fontenc,fontspec,xeCJK,FiraMono,xunicode,newtxmath,figure,fig,image,img,table,itemize,enumerate,newtxtext,newtxtt,ctex,microtype,description,times,newtx,booktabs,tabular,PDFLaTeX,XeLaTeX,type1cm,BibTeX,device,color,mode,lang,amsthm,tcolorbox,titlestyle,cite,marginnote,ctex,listings}, emphstyle={\color{yellow!20!red}}, morekeywords={main,pic,DeclareSymbolFont,SetSymbolFont,toprule,midruletikzstyle,bottomrule,institute,version,includegraphics,setmainfont,setsansfont,setmonofont ,setCJKmainfont,setCJKsansfont,setCJKmonofont,RequirePackage,figref,tabref,email,maketitle,keywords,definecolor,extrainfo,logo,cover,subtitle,appendix,chapter,hypersetup,mainmatter,tableofcontents,elegantpar,numbers,authoryear,heiti,kaishu,lstset,pagecolor,zhnumber,marginpar,part,equote}, frame=shadowbox, rulesepcolor=\color{blue!15!white}, tabsize=2, rulecolor=\color{blue!30}, framerule=0.5pt, columns=flexible, backgroundcolor=\color{gray!40!white} } \begin{document} \begin{lstlisting} frame=shadowbox, rulesepcolor=\color{blue!15!white}, tabsize=2, rulecolor=\color{blue!30}, framerule=0.5pt, columns=flexible, %backgroundcolor=\color{lightgrey} public static void main(String[] args) { System.out.println("Hello World"); } \end{lstlisting} \end{document} ``` 效果如下：