解决方案

在matcher中获取命名组之前，忘记使用 matcher.matches();

Pattern pattern = Pattern.compile(regex);
	Matcher matcher = pattern.matcher(string);
	matcher.matches(); // 漏了这行
	String name = matcher.group(1);

Exception in thread "main" java.lang.IllegalStateException: No match found
	at java.util.regex.Matcher.group(Unknown Source)