在模式中使用组的捕获文本

import java.util.regex.Matcher;

import java.util.regex.Pattern;// 来 自 时 代      J a v a   公   众 号 - nowjava.com


public class Main {

  public static void main(String[] args) throws Exception {

    // Compile regular expression with a back reference to group 1

    String patternStr = "<(\\S+?).*?>(.*?)</\\1>";

    Pattern pattern = Pattern.compile(patternStr);

    Matcher matcher = pattern.matcher("");


    // Set the input

    matcher.reset("test this is test xx <tag a=b> yy test test</tag> zz");


    // Get tagname and contents of tag// from 时   代    Java - nowjava.com

    boolean matchFound = matcher.find();

    System.out.println(matchFound);

    String tagname = matcher.group(1); 

    System.out.println(tagna