我想知道我是否可以创建一个超链接，以某种方式自动使用 bib 文件存储的标签“url”？只是为了防止在同一文本中链接到参考文献和网络源时出现错误，例如：
母语：
\documentclass{article}
\usepackage{filecontents}
\usepackage[style=nature, url=true]{biblatex}
\usepackage{hyperref}
\begin{filecontents}{\jobname.bib}
@online{UseCase20,
title = {{Use-Case 2.0 ebook}},
journal = {Ivar Jacobson International},
year = {2014},
month = {Jul},
note = {[Online; accessed 25. Dec. 2018]},
url = {https://www.ivarjacobson.com/publications/white-papers/use-case-ebook}
}
\end{filecontents}
\addbibresource{\jobname.bib}
\begin{document}
\href{https://www.ivarjacobson.com/publications/white-papers/use-case-ebook}{sometext} \footcite{UseCase20}
\printbibliography
\end{document}
我想做一些这样的工作：
\documentclass{article}
\usepackage{filecontents}
\usepackage[style=nature, url=true]{biblatex}
\usepackage{hyperref}
\begin{filecontents}{\jobname.bib}
@online{UseCase20,
title = {{Use-Case 2.0 ebook}},
journal = {Ivar Jacobson International},
year = {2014},
month = {Jul},
note = {[Online; accessed 25. Dec. 2018]},
url = {https://www.ivarjacobson.com/publications/white-papers/use-case-ebook}
}
\end{filecontents}
\addbibresource{\jobname.bib}
\begin{document}
\href{\citeurl{UseCase20}}{sometext} \footcite{UseCase20}
\printbibliography
\end{document}
但不幸的是，这在第 18 节中被打破了；
\href{\citeurl{UseCase20}}{sometext}
编辑：
所有测试的 MWE：
\documentclass{article}
\usepackage{filecontents}
\usepackage[style=nature, url=true]{biblatex}
\usepackage{hyperref}
\begin{filecontents}{\jobname.bib}
@online{UseCase20,
title = {{Use-Case 2.0 ebook}},
journal = {Ivar Jacobson International},
year = {2014},
month = {Jul},
note = {[Online; accessed 25. Dec. 2018]},
url = {https://www.ivarjacobson.com/publications/white-papers/use-case-ebook}
}
\end{filecontents}
\addbibresource{\jobname.bib}
%https://tex.stackexchange.com/a/413372/118709
\DeclareCiteCommand{\citelink}
{\boolfalse{citetracker}%
\boolfalse{pagetracker}%
\usebibmacro{prenote}}
{\iffieldundef{postnote}
{\href{\thefield{url}}{\printfield{title}}}
{\href{\thefield{url}}{\thefield{postnote}}}}
{\multicitedelim}
{}
% https://tex.stackexchange.com/a/412927/118709
\DeclareCiteCommand{\citeqrurl}
{\boolfalse{citetracker}%
\boolfalse{pagetracker}%
\usebibmacro{prenote}}
{\qrcode{\thefield{url}}}
{\multicitedelim}
{\usebibmacro{postnote}}
% https://tex.stackexchange.com/a/413519/118709
\DeclareCiteCommand{\geturl}
{\boolfalse{citetracker}\boolfalse{pagetracker}}
{\iffieldundef{postnote}
{\xdef\biburl{\thefield{url}}}
{%
\edef\geturlTmpCmd{\csfield{postnote}}%
\expandafter\xdef\geturlTmpCmd{\thefield{url}}%
}%
}
{}
{}
\begin{document}
~\\
\citelink{sometext}{UseCase20}\footcite{UseCase20}\\
~\\
\citeqrurl{sometext}{UseCase20}\footcite{UseCase20}\\
~\\
\geturl{UseCase20}
%The \href{\biburl}{UseCase}\footcite{UseCase20}\\.
\printbibliography
\end{document}
答案1
\citeurl不会返回相关条目的 URL（以可扩展的方式），而是用于打印格式化URL。这意味着它不能用作 的 URI 参数\href。如果您希望能够将\href条目的 URL 转换为任意文本，最简单的方法是创建一个新的\cite...宏。由于\cite...宏具有固定的参数结构，因此下面的宏的工作方式如下
\citehrefurl[<arbitrary text that is going ot be linked>]{<entrykey>}
你可以使用任意参数创建新命令。通常我强烈建议不要通过\cite...命令创建新命令\newcommand，但在这种情况下我们可以例外。
\documentclass{article}
\usepackage[style=nature, url=true]{biblatex}
\usepackage{hyperref}
\DeclareCiteCommand{\citehrefurl}
{\boolfalse{citetracker}%
\boolfalse{pagetracker}}
{\iffieldundef{url}
{\PackageWarning{biblatex}
{The entry \thefield{entrykey} has no URL.\MessageBreak
No link will be created}%
\printfield{postnote}}
{\href{\thefield{url}}
{\iffieldundef{postnote}
{\PackageWarning{biblatex}
{Text argument missing,\MessageBreak
using the title for entry\MessageBreak
\thefield{entrykey}}%
\printfield[citetitle]{labeltitle}}
{\printfield{postnote}}}}}
{}
{}
\newcommand*{\citehrefurlwrap}[2]{\citehrefurl[#2]{#1}}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@online{UseCase20,
title = {Use-Case 2.0 ebook},
author = {Ivar Jacobson and Ian Spence and Kurt Bittner},
date = {2011-12},
url = {https://www.ivarjacobson.com/publications/white-papers/use-case-ebook},
urldate = {2018-12-25},
}
\end{filecontents}
\addbibresource{\jobname.bib}
\begin{document}
\citehrefurl{UseCase20}
\citehrefurl[some text]{UseCase20}
\citehrefurlwrap{UseCase20}{some other text}
\citeurl{UseCase20}
\href{https://www.ivarjacobson.com/publications/white-papers/use-case-ebook}{sometext}
\printbibliography
\end{document}
抱歉，目前没有图片。我无法上传它们。如果您愿意，请随意添加结果的屏幕截图。
这基本上是一个稍微修改过的版本贾昆来自\citelink他们的回答如何使用自定义文本创建 bib 文件中提供的 URL 链接而这又受到了从 citeurl 创建二维码。