java – So extrahieren Sie HTML-Inhalte mithilfe regulärer Ausdrücke

Question

    <p class="info-detail-head-classify-subname"><a id="info_detail_head_classify_type" href="" target="_blank">财富</a></p>
    
    
    想用java 提取财富两个字 请问用正则怎么提取 

    用jsoup会不会简单一点

Answer 1

可以使用jsoup和regex, 推荐使用jsoup!
jsoup document:
https://jsoup.org/cookbook/in...
http://www.open-open.com/jsoup/

    import org.jsoup.Jsoup;
    import org.jsoup.nodes.Document;
    import org.jsoup.nodes.Element;
    
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    public class Main {
    
        public static void main(String[] args) {
    
            // 方法１: jsoup
            String html = "<p class=\"info-detail-head-classify-subname\"><a id=\"info_detail_head_classify_type\" href=\"\" target=\"_blank\">财富</a></p>";
    
            Document doc = Jsoup.parse(html);
            Element element = doc.getElementById("info_detail_head_classify_type");
            System.out.println(element.text());
    
            // 方法2: regex
            Pattern r = Pattern.compile("<a.*>(.*)</a>");
            Matcher m = r.matcher(html);
            if (m.find()) {
                System.out.println(m.group(1));
            }
        }
    }

Answer 2

<a[^>]*>([^<]*)</a>

取<a></a>中的内容