如何从 matcher.group() 获取字符串并将其存储在 java 中的单独字符串变量中？

Question

String emailAdress = "[e-mail]";

Pattern emailAddress = Pattern.compile("(.*)(@)(.*)");

Matcher matchEmailAddress = emailAddress.matcher(emailAdress);

String secondPartOfEmail;

while(matchEmailAddress.find()){

    System.out.println(matchEmailAddress.group(1));

    System.out.println(matchEmailAddress.group(3));

}

当我运行这个源代码时，输出是：

你的名字

yourdomin.com

我想将yourdomain.com存储在字符串类型变量中以备后用。我的意思是 matchEmailAddress 匹配器中的 group(3)。

我已经尝试过：

String secondPartOfEmail = matchEmailAddress.group(3)

但是发生了错误。

Answer 1

假设您只想匹配一个电子邮件地址，您可以这样做：String emailAdress = "[e-mail]";Pattern emailAddress = Pattern.compile("(.*)(@)(.*)");Matcher matchEmailAddress = emailAddress.matcher(emailAdress);matchEmailAddress.find(); //find the next substring matching your patternString secondPartOfEmail = matchEmailAddress.group(3);