Java中的复杂组正则表达式模式

Question

我已经开发了正则表达式模式来解析科学文章中的书目。 我们使用AMA引用样式，对于期刊引用，可以如下所示：

"Nielsen MK, Neergaard MA, Jensen AB, Bro F, Guldin MB. Psychological distress, health, and socio-economic factors in caregivers of terminally ill patients: a nationwide population-based cohort study. Support Care Cancer. 2016; 24(7): 3057-3067."

或没有发行编号：

"Nielsen MK, Neergaard MA, Jensen AB, Bro F, Guldin MB. Psychological distress, health, and socio-economic factors in caregivers of terminally ill patients: a nationwide population-based cohort study. Support Care Cancer. 2016; 24: 3057-3067."

或只有首页（电子号码）。

"Nielsen MK, Neergaard MA, Jensen AB, Bro F, Guldin MB. Psychological distress, health, and socio-economic factors in caregivers of terminally ill patients: a nationwide population-based cohort study. Support Care Cancer. 2016; 24(7): 3057."

或仅使用卷号（如果提前打印）：

"Nielsen MK, Neergaard MA, Jensen AB, Bro F, Guldin MB. Psychological distress, health, and socio-economic factors in caregivers of terminally ill patients: a nationwide population-based cohort study. Support Care Cancer. 2016; 24."

我的模式匹配所有这种情况，并对所有数据进行分组（由于Java，用2个斜杠转义）：

(.*?)\\.(.*?)\\.(.*?)(?<year>\\d+)\\s*?;?\\s*?(?:(?<volume>\\d+))?(?:\\((?<issue>\\d+)\\))?\\s*?(?::\\s*?(?<fpage>\\d+|[A-Za-z]+\\d+))?(?:[\\-\\–](?<lpage>\\d+))?\\.

问题在于作者始终在第一页和最后一页页码之间放置空格。 我认为也许也可以更改此模式以匹配它？

"Nielsen MK, Neergaard MA, Jensen AB, Bro F, Guldin MB. Psychological distress, health, and socio-economic factors in caregivers of terminally ill patients: a nationwide population-based cohort study. Support Care Cancer. 2016; 24(7): 3057 - 3067."

这是一个示例 ，可以看出模式与之不正确匹配。

Answer 1

正确的正则表达式是

(.*?)\.(.*?)\.(.*?)(?<year>\d+)\s*?;?\s*?(?:(?<volume>\d+))?(?:\((?<issue>\d+)\))?\s*?(?::\s*?(?<fpage>\d+|[A-Za-z]+\d+))?(?:[ ]*[\-|\–][ ]*(?<lpage>\d+))?\.

这个https://regex101.com/r/RAdNgb/2解决了您的问题。 请检查一下。