在java中使用xpath检索特定的子节点

Question

我有像下面这样的 xml

  <results>
        <result>
            <location>/tmp/path1</location>
            <name>name1</name>
        </result>
        <result>
            <location>/tmp/path2</location>
            <name>name2</name>
        </result>
    </results>

我想遍历所有结果对象并使用每个对象的location和name 。 我正在使用以下代码来获取结果对象列表

XPathExpression expression = XPathFactory.newInstance().newXPath().compile("/results/result");
NodeList nodes = (NodeList) expression.evaluate(document, XPathConstants.NODESET); 
for (int i = 0; i < nodes.getLength(); i++) {
  Node node = nodes.item(i);
  // ??
}

如何从节点获取location和name值？

Answer 1

您可以像这样获取值。 还有其他的可能性。 虽然我没有优化代码。

XPathExpression expression = XPathFactory.newInstance().newXPath().compile("/results/result");
NodeList nodes = (NodeList) expression.evaluate(document, XPathConstants.NODESET); 
for (int i = 0; i < nodes.getLength(); i++) {
    Node node = nodes.item(i);
    String location = XPathFactory.newInstance().newXPath().evaluate("location", DomSource(node));
    String name = XPathFactory.newInstance().newXPath().evaluate("name", new DomSource(node));
}