尝试使用 Apache Tika 和 XPath 获取属性值

Question

I have tried many different XPath values and just don't understand why I can't retrieve what I want with Apache Tika. I want to retrieve the href attribute value of links on random webpages. I managed to find out how to extract the content inside the tags but trying to get the attribute values always returns empty. What am I doing wrong?, Here is my code below, Thanks a lot

XPathParser  xhtmlParser = new XPathParser ("xhtml", XHTMLContentHandler.XHTML);
Matcher anchorLinkContentMatcher = xhtmlParser.parse("//xhtml:a/@xhtml:href/text()");
ContentHandler handler = new MatchingContentHandler(
    new ToHTMLContentHandler(), anchorLinkContentMatcher);
HtmlParser parser = new HtmlParser();
ParseContext pcontext = new ParseContext();
    
try {
    parser.parse(urlContentStream, handler, new Metadata(),pcontext);
    System.out.println(handler);
}
catch (Exception e)
{....}

I have tried these different XPaths:

//xhtml:a/@xhtml:href
//xhtml:a/@href/text()
//xhtml:a/@href
//@xhtml:href/text()

Answer 1

You were almost there... you will need:

//xhtml:a/@href