XPath选择文档中具有java中指定名称的所有节点 示例XML

但此代码不选择任何板球节点。请根据您的“更正”示例XML提出建议

<Games>
    <Indoor>
        <TT></TT>
        <Chess>
        </Chess>
        <cricket>asd</cricket>
        <ComputerGame>
            <cricket>asd</cricket>
        </ComputerGame>
    </Indoor>
    <Outdoors>
        <Football></Football>
        <cricket>asd</cricket>
    </Outdoors>
</Games>

我能把它输出

Found 3 results

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我“怀疑”您的XML格式不正确，并且您忽略了由于它而引发的任何异常…

是否涉及任何名称空间？显示加载XML文档的代码。让我们从示例XML格式不正确的事实开始。。。

<Games>
    <Indoor>
        <TT></TT>
        <Chess>
        </Chess>
        <cricket>asd</cricket>
        <ComputerGame>
            <cricket>asd</cricket>
        </ComputerGame>
    </Indoor>
    <Outdoors>
        <Football></Football>
        <cricket>asd</cricket>
    </Outdoors>
</Games>

import java.io.File;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class TestXPath101 {

    public static void main(String[] args) {
        try {
            Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new File("Test.xml"));
            XPath xPath = XPathFactory.newInstance().newXPath();
            XPathExpression exp = xPath.compile("//cricket");
            NodeList nl = (NodeList)exp.evaluate(doc, XPathConstants.NODESET);
            System.out.println("Found " + nl.getLength() + " results");
        } catch (ParserConfigurationException | SAXException | IOException | XPathExpressionException ex) {
            ex.printStackTrace();
        }
    }

}

Found 3 results