java - 使用 xml dom 解析器获取元素

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如何仅使用 xml DOM 解析器在 jbeil 中获取餐厅名称，请帮忙:这是我的 XML 文件

 <city>

 <beirut>
     <restaurant>
       <name>sada</name>
     </restaurant>
</beirut>

<jbeil>
     <restaurant>
       <name>sada</name>
     </restaurant>
</jbeil>

 <sour>     
     <restaurant>
       <name>sada</name>
     </restaurant>
 </sour>

 </city>

我想使用 dom 解析器获取 Jbeil 的餐厅名称，此代码为我提供所有城市的餐厅名称:

 try {  
     File inputFile = new File("src/josephXml.xml");
     DocumentBuilderFactory dbFactory 
        = DocumentBuilderFactory.newInstance();
     DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
     Document doc = dBuilder.parse(inputFile);
     doc.getDocumentElement().normalize();


     NodeList nList = doc.getElementsByTagName("Restaurant");

     for (int temp = 0; temp < nList.getLength(); temp++) {
        Node nNode = nList.item(temp);


       if (nNode.getNodeType() == Node.ELEMENT_NODE) {
           Element eElement = (Element) nNode; 


            jTextArea1.append( "\n"+"Name      :   "+ eElement
              .getElementsByTagName("name")
              .item(0)
              .getTextContent()+"\n "

Answer 1

使用 XPath

许多资源:http://viralpatel.net/blogs/java-xml-xpath-tutorial-parse-xml/

类似的东西(未测试)

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathFactory;

XPath xPath =  XPathFactory.newInstance().newXPath();
String expression = "/city/jbeil/restaurant/name";
//read a string value
String thename= xPath.compile(expression).evaluate(xmlDocument);