Java RegEx从字符串中复制第二个URL

我正试图从这些Stings中提取第二个url

 submitted by <a href="http://www.reddit.com/user/thecrappycoder"> thecrappycoder </a> <br /> <a href="http://blogs.msdn.com/b/bethmassi/archive/2015/02/25/understanding-net-2015.aspx">[link]</a> <a href="http://www.reddit.com/r/programming/comments/2x9o4o/understanding_net_2015/">[3 comments]</a>
 submitted by <a href="http://www.reddit.com/user/durdn"> durdn </a> <br /> <a href="https://www.youtube.com/watch?v=yG-UaBJXZ80">[link]</a> <a href="http://www.reddit.com/r/programming/comments/2x89le/hacking_with_andrew_and_brad_an_http2_client/">[1 comment]</a>

我也试过这样做

System.out.println(("http://"+text.split("http://")[1]).split("")[0]);

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不幸的是，我没能得到它。任何帮助，谢谢。

您可以使用简化的正则表达式模式采用相同的方法：

String text = "submitted by <a href=\"http://www.reddit.com/user/thecrappycoder\"> thecrappycoder </a> <br />" +
        " <a href=\"http://blogs.msdn.com/b/bethmassi/archive/2015/02/25/understanding-net-2015.aspx\">[link]</a> " +
        "<a href=\"http://www.reddit.com/r/programming/comments/2x9o4o/understanding_net_2015/\">[3 comments]</a>\n" +
        " ";
String regex = "href=.(http.*?)\"";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(text);
m.find(); // ignore the 1st match
m.find(); // find the 2nd match
String urlStr = m.group(); // read the 2nd match
System.out.println("urlStr = " + urlStr); // prints: urlStr = http://blogs.msdn.com/b/bethmassi/archive/2015/02/25/understanding-net-2015.aspx

String text=“提交人
”+
"  " +
“\n”+
" ";
字符串regex=“href=（http.*？\”；
Pattern p=Pattern.compile（regex）；
匹配器m=p.Matcher（文本）；
m、 find（）；//忽略第一个匹配项
m、 find（）；//查找第二个匹配项
字符串urlStr=m.group（）；//读取第二个匹配项
System.out.println（“urlStr=“+urlStr）；//prints:urlStr=http://blogs.msdn.com/b/bethmassi/archive/2015/02/25/understanding-net-2015.aspx

谢谢你的优雅解决方案。我不知道这样做可以忽略第一场比赛。谢谢！

String text = "submitted by <a href=\"http://www.reddit.com/user/thecrappycoder\"> thecrappycoder </a> <br />" +
        " <a href=\"http://blogs.msdn.com/b/bethmassi/archive/2015/02/25/understanding-net-2015.aspx\">[link]</a> " +
        "<a href=\"http://www.reddit.com/r/programming/comments/2x9o4o/understanding_net_2015/\">[3 comments]</a>\n" +
        " ";
String regex = "href=.(http.*?)\"";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(text);
m.find(); // ignore the 1st match
m.find(); // find the 2nd match
String urlStr = m.group(); // read the 2nd match
System.out.println("urlStr = " + urlStr); // prints: urlStr = http://blogs.msdn.com/b/bethmassi/archive/2015/02/25/understanding-net-2015.aspx