如何在Java中解析HTML字符串？

• Z时代
• 2024-01-10
• 分类：问答

给定字符串"<table><tr><td>Hello

World!</td></tr></table>"，获取代表它的DOM元素的（最简单）方法是什么？

回答：

我在某个地方找到了（不记得在哪里）：

 public static DocumentFragment parseXml(Document doc, String fragment)
 {
    // Wrap the fragment in an arbitrary element.
    fragment = "<fragment>"+fragment+"</fragment>";
    try
    {
        // Create a DOM builder and parse the fragment.
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        Document d = factory.newDocumentBuilder().parse(
                new InputSource(new StringReader(fragment)));
        // Import the nodes of the new document into doc so that they
        // will be compatible with doc.
        Node node = doc.importNode(d.getDocumentElement(), true);
        // Create the document fragment node to hold the new nodes.
        DocumentFragment docfrag = doc.createDocumentFragment();
        // Move the nodes into the fragment.
        while (node.hasChildNodes())
        {
            docfrag.appendChild(node.removeChild(node.getFirstChild()));
        }
        // Return the fragment.
        return docfrag;
    }
    catch (SAXException e)
    {
        // A parsing error occurred; the XML input is not valid.
    }
    catch (ParserConfigurationException e)
    {
    }
    catch (IOException e)
    {
    }
    return null;
}

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