java - Jsoup:如何在迭代期间将 HTML 类组合到产品记录中

Question

我正在尝试抓取这样的菜单:-

<h3 class="product">Four Cheese Spinach Dip</h3>
<h3 class="specialcallout">Vegetarian</h3>
<h4 class="productdescription">The original, made in-house creamy blend
  of four cheeses, spinach, red pepper and onion. Served warm with fried
  pita chips.</h4>
<h4 class="calories"><span class="productprice">11.99</span>
&nbsp;&nbsp;(620 CALS; serves 2)</h4>

我也许可以通过将每个类迭代到字符串数组中来构造一个菜单对象。下面是扫描获取菜单项名称:

boolean show_product(String item){
  Elements elems = doc.getElementsByClass(item);
  System.out.println("Num products " + elems.size() + "\n");
 for (Element el : elems) {
    xprint(" * product: <%s>  (%s)", "_",trim(el.text(), 35));

我必须对产品、价格、描述等有单独的例程吗？

Answer 1

您不必对每个属性都执行此例程，您可以这样做:

boolean show_product() {
    Elements elems = doc.getElementsByClass("product");
    System.out.println("Num products " + elems.size() + "\n");
    for (Element el : elems) {
        System.out.printf(" * %s: <%s>  (%s)\n", el.className(), "_", el.text());
        for (int i = 0; i < 3; i++) {
            Element nextSibling = el.nextElementSibling();
            System.out.printf(" * %s: <%s>  (%s)\n", nextSibling.className(), "_", nextSibling.text());
            el = nextSibling;
        }
        Element spanEl = el.select("span").first();
        System.out.printf(" * %s: <%s>  (%s)\n", spanEl.className(), "_", spanEl.text());
    }
    return true;
}

HTML 类也被组合到产品记录和其他属性中。