正则表达式\\ s *，\\ s *做什么？

I am wondering what this line of code does to a url that is contained in a String called surl?

我想知道这行代码对名为surl的字符串中包含的url做了什么？

String[] stokens = surl.split("\\s*,\\s*");

Lets pretend this is the surl = "http://myipaddress:8080/Map/MapServer.html" What will stokens be?

让我们假装这是surl =“http：// myipaddress：8080 / Map / MapServer.html”会是什么？

2 个解决方案

#1

That regex "\\s*,\\s*" means:

正则表达式“\\ s *，\\ s *”表示：

• \s* any number of whitespace characters
• \ s *任意数量的空白字符
• a comma
• 一个逗号
• \s* any number of whitespace characters
• \ s *任意数量的空白字符

which will split on commas and consume any spaces either side

它将在逗号上分开并消耗任何一侧的空格

#2

• \s stands for "whitespace character".
• \ s代表“空白字符”。

• It includes [ \t\r\n\f]. That is: \s matches a space, a tab, a line break, or a form feed.

  它包括[\ t \ r \ n \ f]。即：\ s匹配空格，制表符，换行符或换页符。

  \s*,\s*

  \ S * \ S *

  \s* - says zero or more occurrence of whitespace characters, followed by a comma and then followed by zero or more occurrence of whitespace characters.

  \ s * - 表示空白字符出现零次或多次，后跟逗号，然后出现零次或多次空格字符。

These are called short hand expressions.

这些被称为短手表达。

You can find similar regex in this site : http://www.regular-expressions.info/shorthand.html

你可以在这个网站找到类似的正则表达式：http：//www.regular-expressions.info/shorthand.html