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有人可以提供一个使用 iTextSharp (C#) 中的 XMLWorkerHelper 将 HTML 解析为元素列表的示例。

文档中给出的 JAVA 版本是：

XMLWorkerHelper.getInstance().parseXHtml(new ElementHandler() {
        public void add(final Writable w) {

          if (w instanceof WritableElement) {
            List<Element> elements = ((WritableElement)w).elements();
          // write class names of elements to file
         }
        }

     }, HTMLParsingToList.class.getResourceAsStream("/html/walden.html"));
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1 回答 1

4

您需要IElementHandler在自己的类中实现接口：

public class SampleHandler : IElementHandler {
    //Generic list of elements
    public List<IElement> elements = new List<IElement>();
    //Add the supplied item to the list
    public void Add(IWritable w) {
        if (w is WritableElement) {
            elements.AddRange(((WritableElement)w).Elements());
        }
    }
}

这里没有使用文件流，而是解析字符串的示例。要使用文件，请将 替换StringReader为StreamReader.

    string html = "<html><head><title>Test Document</title></head><body><p>This is a test. <strong>Bold <em>and italic</em></strong></p><ol><li>Dog</li><li>Cat</li></ol></body></html>";
    //Instantiate our handler
    var mh = new SampleHandler();
    //Bind a reader to our text
    using (TextReader sr = new StringReader(html)) {
        //Parse
        XMLWorkerHelper.GetInstance().ParseXHtml(mh, sr);
    }

    //Loop through each element
    foreach (var element in mh.elements) {
        //Loop through each chunk in each element
        foreach (var chunk in element.Chunks) {
            //Do something
        }
    }
于 2013-03-12T13:33:44.453 回答