我的硕士项目遇到了问题，我无法写下我的名字，因为里面有一个 ø。当我编译时我收到错误。
Package inputenc Error: Keyboard character used is undefined
(inputenc) in inputencoding `utf8'.
See the inputenc package documentation for explanation.
Type H <return> for immediate help.
...
l.1 ...lly I would like to thank my Father Niels Sø
gaard and Mia Louise Søga...
You need to provide a definition with \DeclareInputText
or \DeclareInputMath before using this key.
我一直在网上搜索，发现遇到此问题的人通常文件未使用 utf8 编码，我正在使用 Sharelatex，因此所有内容都应该是 utf8，与我的 Dropbox 同步的文件也是如此！
我的项目有
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
还有什么可能导致此错误？我已经尝试修复它超过 4 个小时了 :(
更新：我必须使用 LuaLatex 计算机才能使我的图表工作，但如果我使用 PDFLatex 剂量 æ ø å 工作就很好
更新 2：我使用的学校（丹麦学校）的官方模板
%==================================================================================================
% LUKE PHD THESIS LAYOUT STYLE FILE
% ---------------------------------
% Based upon work by: Henrik Aalborg Nielsen, Thomas Fabricius, Jan Larsen and Finn Kuno
% Christensen
% Contact: Luke Herbert ([email protected])
%==================================================================================================
\typeout{----------------------------------------------------}
\typeout{USING LUKE'S PHD THESIS TEMPLATE 1.2}
\typeout{----------------------------------------------------}
%
%==================================================================================================
% BASE PACKAGES
%==================================================================================================
%\usepackage[utf8]{inputenc} %Allows input of tex files encoded in UTF8
%\usepackage[T1]{fontenc} %Set font encoding for output PDF
\usepackage[danish,english]{babel} %Allows langauge switching (English is default)
\usepackage{graphicx} %Support for including graphics
\usepackage{xcolor} %Support for using colours
\usepackage[hang,normalsize,bf]{caption} %Make pretty captions
\usepackage{varioref} %Enhances references (\vref {label})
\usepackage{fancyhdr} %Pretty headers/footers
\usepackage{hyperref} %References package
\usepackage{amsmath,amssymb,latexsym} %AMS and other symbols
\usepackage{epic,eepic,epsfig,graphics,psfrag} %Figure/picture packages
\usepackage{theorem} %Allows creation of custom enviroments
%
%==================================================================================================
% PAGE GEOMETRY
%==================================================================================================
\addtolength{\parskip}{\baselineskip}
\setlength{\parindent}{0pt}
\pagestyle{myheadings}
\setlength{\paperwidth}{176mm} %b5
\setlength{\paperheight}{250mm} %b5
\setlength{\textheight}{185mm} % 540pt = 7.5inch = 190.5mm
\setlength{\topmargin}{-5.4mm}
\setlength{\headheight}{8mm}
\setlength{\headsep}{7mm}
\setlength{\footskip}{10.0mm}
\setlength{\textwidth}{121.36mm} % 129.36 mm % width and margins must add to 176 mm:
\setlength{\oddsidemargin}{1.24mm} % 1 inch + 1.24 mm = 26.64 mm inside
\setlength{\evensidemargin}{-5.4mm} % 1 inch - 5.4 mm = 20 mm outside
%==================================================================================================
% HEADINGS SETUP
%==================================================================================================
\pagestyle{fancyplain}
\renewcommand{\chaptermark}[1]{\markboth{#1}{}}
\renewcommand{\sectionmark}[1]{\markright{\thesection\ #1}}
\lhead[\fancyplain{}{\sffamily\bfseries\thepage}]%
{\fancyplain{}{\sffamily\bfseries\rightmark}}
\rhead[\fancyplain{}{\sffamily\bfseries\leftmark}]%
{\fancyplain{}{\sffamily\bfseries\thepage}}
\cfoot{}
%
%==================================================================================================
% GENERATE DERIVED THESIS PROPERTIES
%==================================================================================================
\newcommand{\derivethesisprops}{
\def\ttitle{{\sf\textbf{\thesistitle}}}
\def\thesisdef{IMM-\thesisdegree-\thesisyear-\thesisnumber}
\def\printversion{print}
\ifx\thesisversion\printversion
\special{papersize=176mm,250mm} %DTU-IMM special paper size
\hypersetup{pdftitle={\thesistitle},
pdfauthor={\thesisauthor},
pdfsubject={\thesisdef},
pdfkeywords={\thesiskeywords},
breaklinks,
bookmarksopen,
bookmarksnumbered,
plainpages=false}
\else
\hypersetup{pdftitle={\thesistitle},
pdfauthor={\thesisauthor},
pdfsubject={\thesisdef},
pdfkeywords={\thesiskeywords},
colorlinks,
linkcolor=blue,
breaklinks,
bookmarksopen,
bookmarksnumbered,
plainpages=false}
\fi
}
%
%==================================================================================================
% GENERATE PREFRONTMATTER
%==================================================================================================
\newcommand{\prefrontmatter}{
\pagenumbering{alph} %Set prefrontmatter numbering style
\thispagestyle{empty} %Front page (inside cover)
\vspace*{\fill}
\begin{center}
{\huge\ttitle}\\*[2cm]
\LARGE\sf\thesisauthor\\*[2.5cm]
\includegraphics[scale=2]{dtu/DTU-logo} \\*[1cm]
\small\sf Kongens Lyngby \thesisyear\\
%\small\sf IMM-\thesisdegree-\thesisyear-\thesisnumber
\small\sf IMM-\thesisdegree-\thesisyear
\end{center}
\vspace*{\fill}
\newpage %Back of front page
\thispagestyle{empty}
\vspace*{11cm}
{\sf Technical University of Denmark}\\
{\sf Department of Applied Mathematics and Computer Science}\\
{\sf Matematiktorvet, building 303B,}\\
{\sf 2800 Kongens Lyngby, Denmark}\\
{\sf Phone +45 4525 3351}\\
{\sf [email protected]}\\
{\sf www.compute.dtu.dk}
\vspace*{2.5cm}
\def\empty{}
%{\sf IMM-\thesisdegree-\thesisyear-\thesisnumber}
{\sf IMM-\thesisdegree-\thesisyear}
}
%
%==================================================================================================
% ENVIROMENTS SETUP
%==================================================================================================
\newtheorem{lemma}{Lemma}[chapter]
\newtheorem{proposition}[lemma]{Proposition}
\newtheorem{theorem}[lemma]{Theorem}
\newtheorem{corollary}[lemma]{Corollary}{\theorembodyfont{\rmfamily}
\newtheorem{definition}[lemma]{Definition}}\theoremheaderfont{\scshape\bfseries}
\newenvironment{proof}{{\scshape Proof.}}{}
\newcommand{\qed}{\hfill $\square$ \vspace{5mm}}
\newtheorem{example}{Example}[chapter]
%
%==================================================================================================
% CHAPTER AND APPENDIX STYLING SETUP
%==================================================================================================
\renewcommand{\chaptername}{C h a p t e r }
\renewcommand{\appendixname}{A p p e n d i x }
%
\def\@makechapterhead#1{%
\vspace*{50\p@}%
{\parindent \z@ \raggedright \normalfont
\ifnum \c@secnumdepth >\m@ne
\if@mainmatter
\large\scshape \@chapapp \space\space \Huge\upshape\thechapter
\par\nobreak
\vskip 20\p@
\fi
\fi
\interlinepenalty\@M
\flushleft\parbox{\textwidth}{\raggedleft \sffamily\Huge\bfseries #1}
\par\nobreak
\vskip 15pt
\hrule height 0.4pt
\vskip 80\p@
}}
%
\def\@makeschapterhead#1{%
\vspace*{50\p@}%
{\parindent \z@ \raggedright \normalfont
\interlinepenalty\@M
\sffamily\huge\bfseries #1
\par\nobreak
\vskip 15pt
\hrule height 0.4pt
\vskip 80\p@
}}
% % % EOF % % %
更新3：我的主要文件：
%==================================================================================================
% LUKES THESIS TEMPLATE 1.2
% -------------------------
% This template is based upon the offcial IMM PhD Thesis template, it is enhanced with a number
% of new features and a number of errors have fixed. This template is intended to be complied to
% PDF using PDFLATEX and is tested using the MiKTeX 2.9 LaTeX distribution.
% It is based on the official DTU-IMM Thesis template by Finn Kuno Christensen in 2009.
% Small bugfixes by Kasper Laursen in 2012 and 2013.
% -------------------------
% Last Updated: 2012-09-19
% Contact: [email protected]
%==================================================================================================
%
%==================================================================================================
% DOCUMENT SETUP
%==================================================================================================
\documentclass[10pt,twoside]{book} %Official DTU-IMM Thesis document setup
%\usepackage[utf8]{inputenc}
%\usepackage{fontspec}
%
%Set to 'print' for printed version, use 'net' for online version
\def\thesisversion{print}
%
%==================================================================================================
% PACKAGES
%==================================================================================================
\usepackage{LukeThesis} %Import Thesis base style
%input{PhDMacros} %Thesis specific macros
%
%==================================================================================================
% THESIS PROPERTIES (Modifiy these fields with your details)
%==================================================================================================
\def\thesisauthor{Kasper Rune Søgaard} %Author
\def\thesistitle{Schema Evolution for Automatic Migration} %Title
\def\thesishandin{31-July} %Submission date (Day-Month}
\def\thesisdegree{M.Sc.} %Degree ('B.Eng', 'B.Sc.', 'M.Sc.' or 'PhD')
\def\thesisyear{2014} %Submission year
\def\thesisnumber{????} %DTU-IMM Serial number (do not include year)
\def\thesisISSN{0000-0000} %ISSN number
\def\thesiskeywords{Keywords are, comma separated} %PDF keywords
\derivethesisprops %Derive dependent properties
%
%==================================================================================================
% SECTION NUMBERING SETUP
%==================================================================================================
\setcounter{tocdepth}{2} %2 adds sections up to subsections
\setcounter{secnumdepth}{3} %Subsubsections get a number when this is 3
%
%==============================
% My stuff
%==============================
\usepackage{tabularx}
\usepackage{graphicx}
\usepackage{tikz}
\usepackage{forest}
\usetikzlibrary{graphdrawing}
\usetikzlibrary{graphs}
\usegdlibrary{trees}
\usepackage{adjustbox}
\usepackage{listings}
\usepackage{algorithm}
\usepackage[noend]{algpseudocode}
\usepackage{algorithmicx}
\tikzset{highlightcircle/.style={circle, draw, ultra thick, minimum size=0.75cm}}
\usepackage{color}
\definecolor{gray}{rgb}{0.4,0.4,0.4}
\definecolor{darkblue}{rgb}{0.0,0.0,0.6}
\definecolor{cyan}{rgb}{0.0,0.6,0.6}
\lstset{
basicstyle=\ttfamily,
columns=fullflexible,
showstringspaces=false,
commentstyle=\color{gray}\upshape
}
\lstdefinelanguage{XML}
{
morestring=[b]",
morestring=[s]{>}{<},
morecomment=[s]{<?}{?>},
stringstyle=\color{black},
identifierstyle=\color{darkblue},
keywordstyle=\color{cyan},
morekeywords={xmlns,version,type}% list your attributes here
}
\algdef{SE}[DOWHILE]{Do}{doWhile}{\algorithmicdo}[1]{\algorithmicwhile\ #1}%
%==================================================================================================
% THESIS STRUCTURE (Modifiy to include more chapters etc)
%==================================================================================================
\begin{document}
更新 4：你想要一个小测试
\documentclass{book}
\begin{document}
this is a "æ"
\end{document}
给出结果
this is a ""
答案：添加以下内容解决了我的问题
\usepackage[utf8]{luainputenc}
答案1
当使用 pdflatex 编译时，它可以完美运行：
\documentclass[]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\begin{document}
Niels Søgaard
\end{document}
如果出现 inputenc 错误，则表示带有 ø 的文件不是 utf8 编码的，您需要重新编码。或者创建一个新的 utf8 文档，然后将内容复制并粘贴到其中。
您不需要切换到 lualatex 来获取这样的字符，但是如果您这样做：lualatex 也需要 utf8 格式的文件。
答案2
您不应该使用luainputenc，请确保您的 *.tex 文件是 utf8 编码的，并加载 fontspec 包：
\documentclass[]{article}
\usepackage{fontspec}
\begin{document}
Niels Søgaard
\end{document