知网 网址信息太长

[e71828]

你好，

首先感谢这个项目，我用的时候 发现知网抓取的网址信息太长，在打印的时候占了三行。

我看了相关的问题 #67 看到了有人说不显示网址的定制化建议，我的个人想法是对于网址过于长的不显示（一般的标准应该是不超过1行半的字符吧。）

[hushidong]

可以想如下这般处理，你根据你的需要设置url的长度阈值，我下面的例子中是100，超过100个字符，则不要url。

比如：

% !Mode:: "TeX:UTF-8"
% 用于测试gb7714-2015样式，对于作者姓名格式的控制和选项
% 测试gbnamefmt选项
% 测试bib文件中的nameformat域
\documentclass[twoside]{article}
\usepackage{ctex}
\usepackage{xcolor}
\usepackage[colorlinks]{hyperref}
\usepackage{lipsum}
\usepackage{geometry}

\usepackage[backend=biber,style=gb7714-2015,url=true,doi=false]{biblatex}

\DeclareStyleSourcemap{
    \maps[datatype=bibtex]{%
        \map[overwrite]{%若url内部长度超过100个字符则不输出
            \step[fieldsource=url,match=\regexp{(.{100,})},final]%
            \step[fieldset=url,null]%
            \step[fieldset=urldate,null]%
        }
    }
}

\begin{filecontents}[force]{\jobname.bib}
@article{wu2018da,
  title = {Assessing River Water Quality Using Water Quality Index in {{Lake Taihu Basin}}, {{China}}},
  author = {Wu, Zhaoshi and Wang, Xiaolong and Chen, Yuwei and Cai, Yongjiu and Deng, Jiancai},
  date = {2018-01},
  journaltitle = {Science of The Total Environment},
  shortjournal = {Science of The Total Environment},
  volume = {612},
  pages = {914--922},
  issn = {00489697},
  doi = {10.1016/j.scitotenv.2017.08.293},
  urldate = {2023-07-19},
  url={10.1016/j.scitotenv.2017.08.29310.1016/j.scitotenv.2017.08.29310.1016/j.scitotenv.
  2017.08.29310.1016/j.scitotenv.2017.08.29310.1016/j.scitotenv.2017.08.293},
  langid = {english},
  extradate={1}
}

@article{wu2018d,
  title = {Assessing River Water Quality Using Water Quality Index in {{Lake Taihu Basin}}, {{China}}},
  author = {Wu, Zhaoshi and Wang, Xiaolong and Chen, Yuwei and Cai, Yongjiu and Deng, Jiancai},
  date = {2018-01},
  journaltitle = {Science of The Total Environment},
  shortjournal = {Science of The Total Environment},
  volume = {612},
  pages = {914--922},
  issn = {00489697},
  doi = {10.1016/j.scitotenv.2017.08.293},
  url={10.1016/j.scitotenv.2017.08.293},
  urldate = {2023-07-19},
  langid = {english},
  extradate={1}
}

\end{filecontents}
\addbibresource{\jobname.bib}

\begin{document}

\nocite{*}

\printbibliography

 \end{document} 

结果为：

[e71828]

\DeclareStyleSourcemap{
    \maps[datatype=bibtex]{%
        \map[overwrite]{%若url内部长度超过100个字符则不输出
            \step[fieldsource=url,match=\regexp{(.{100,})},final]%
            \step[fieldset=url,null]%
            \step[fieldset=urldate,null]%
        }
    }
}

结题。