java - Android XML 解析 - 标签内有标签的 XML

Question

我正在解析 xml，但无法解析位于其他标签内的 xml 标签。 这是 XML 结构。

<Entry>
  <MediaID>434234242342</MediaID>
  <MediaName>Brazil</MediaName>
  <PhoneNo>
     <Ip>23232323232</Ip>
     <Ip>32323232323</Ip>
     <Ip>323232323232</Ip>
  </PhoneNo>
</Entry>

这是 Java 代码。我成功地解析了 MediaID 和 MediaName，但是如何解析

中的标签

Document doc = parser.getDomElement(return_string); // getting DOM element
NodeList nl2 = doc.getElementsByTagName("Entry");

   for (int i = 0; i < nl2.getLength(); i++) {

        Element e = (Element) nl2.item(i); 
        media_name = parser.getValue(e,"MediaName");
        mediaID    = parser.getValue(e,"MediaID");
        phoneNo =  parser.getValue(e,"PhoneNo"); //it is not working
   }

Answer 1

尝试递归。您可以按照自己的方式格式化输出。

import java.io.IOException;
import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

public class DOMParser {
    public static void main(final String[] args) throws SAXException, IOException, ParserConfigurationException {
        String xml = "<Entry>"
                + "<MediaID>434234242342</MediaID>"
                + "<MediaName>Brazil</MediaName>"
                + "<PhoneNo>"
                    + "<Ip>23232323232</Ip>"
                    + "<Ip>32323232323</Ip>"
                    + "<Ip>323232323232</Ip>"
                + "</PhoneNo>"
            + "</Entry>";
        DOMParser parser = new DOMParser();
        final Document doc = parser.getDomElement(xml);
        parser.parse(doc.getDocumentElement());
    }

    public void parse(final Element e) {
        final NodeList children = e.getChildNodes();
        for (int i = 0; i < children.getLength(); i++) {
            final Node n = children.item(i);
            if(n.getNodeType() == Node.TEXT_NODE){
            System.out.println(n.getTextContent());
            } else if (n.getNodeType() == Node.ELEMENT_NODE) {
            System.out.print(n.getNodeName() + " : ");
            parse((Element) n);
            }
        }
    }

    public Document getDomElement(String xml){
        Document doc = null;
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        try {

            DocumentBuilder db = dbf.newDocumentBuilder();

            InputSource is = new InputSource();
            is.setCharacterStream(new StringReader(xml));
            doc = db.parse(is); 

            } catch (ParserConfigurationException e) {
            return null;
            } catch (SAXException e) {
            return null;
            } catch (IOException e) {
            return null;
            }

            return doc;
        }
}