Jsoup：如何在2个标头标签之间获取所有html

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问题描述

我想在2个h1标签之间获取所有html。实际任务是根据h1（标题1）标记将html分成帧（章节）。

I am trying to get all html between 2 h1 tags. Actual task is to break the html into frames(chapters) based of the h1(heading 1) tags.

感谢任何帮助。

谢谢
Sunil

ThanksSunil

推荐答案

如果你想连续两次获取和处理所有元素 h1 您可以为兄弟姐妹工作的标签。以下是一些示例代码：

If you want to get and process all elements between two consecutive h1 tags you can work on siblings. Here's some example code:

public static void h1s() {
  String html = "<html>" +
  "<head></head>" +
  "<body>" +
  "  <h1>title 1</h1>" +
  "  <p>hello 1</p>" +
  "  <table>" +
  "    <tr>" +
  "      <td>hello</td>" +
  "      <td>world</td>" +
  "      <td>1</td>" +
  "    </tr>" +
  "  </table>" +
  "  <h1>title 2</h1>" +
  "  <p>hello 2</p>" +
  "  <table>" +
  "    <tr>" +
  "      <td>hello</td>" +
  "      <td>world</td>" +
  "      <td>2</td>" +
  "    </tr>" +
  "  </table>" +
  "  <h1>title 3</h1>" +
  "  <p>hello 3</p>" +
  "  <table>" +
  "    <tr>" +
  "      <td>hello</td>" +
  "      <td>world</td>" +
  "      <td>3</td>" +
  "    </tr>" +
  "  </table>" +
  "</body>" +
  "</html>";
  Document doc = Jsoup.parse(html);
  Element firstH1 = doc.select("h1").first();
  Elements siblings = firstH1.siblingElements();
  List<Element> elementsBetween = new ArrayList<Element>();
  for (int i = 1; i < siblings.size(); i++) {
    Element sibling = siblings.get(i);
    if (! "h1".equals(sibling.tagName()))
      elementsBetween.add(sibling);
    else {
      processElementsBetween(elementsBetween);
      elementsBetween.clear();
    }
  }
  if (! elementsBetween.isEmpty())
    processElementsBetween(elementsBetween);
}

private static void processElementsBetween(
    List<Element> elementsBetween) {
  System.out.println("---");
  for (Element element : elementsBetween) {
    System.out.println(element);
  }
}

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