java - 从括号中获取字符串的正则表达式？

Question

我有以下字符串:

"The girl with the dragon tattoo (LISBETH)"

我需要在输入的末尾仅获取括号中的字符串。

到目前为止我是这样的:

    public static void main(String[] args) {

    Pattern pattern =
    Pattern.compile("\\({1}([a-zA-Z0-9]*)\\){1}");

    Matcher matcher = pattern.matcher("The girl with the dragon tattoo (LISBETH)");

    boolean found = false;
    while (matcher.find()) {
        System.out.println("I found the text " + matcher.group()
                + " starting at " + "index " + matcher.start()
                + " and ending at index " +
                matcher.end());
        found = true;
    }
    if (!found) {
        System.out.println("No match found");
    }
}

但结果我得到:(LISBETH)。

如何摆脱这些括号？

谢谢!

Answer 1

使用这个模式:\\((.+?)\\) 然后得到组 1

public static void main(String[] args) {

    Pattern pattern = Pattern.compile("\\((.+?)\\)");
    Matcher matcher = pattern.matcher("The girl with the dragon tattoo (LISBETH)");

    boolean found = false;
    while (matcher.find()) {
        System.out.println("I found the text " + matcher.group(1)
                + " starting at " + "index " + matcher.start()
                + " and ending at index " +
                matcher.end());
        found = true;
    }
    if (!found) {
        System.out.println("No match found");
    }
}