XPath最后一次出现的每个元素

import xml.etree.ElementTree as ET

# 解析XML文档
tree = ET.parse('document.xml')
# 获取文档中的所有节点
root = tree.getroot()
# 定义变量，用于存储XPath最后一次出现的每个元素的值
last_elements = []

# 遍历所有节点，找到XPath最后一次出现的每个元素
for element in root.findall('.//{xpath}'):
    if element.attrib.get('last'):
        last_elements.append(element)

# 输出XPath最后一次出现的每个元素的值
print(last_elements)

import java.io.IOException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class XPathLastElements {

    public static void main(String[] args) throws IOException, XPathExpressionException {
        String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
                       "<root>\n" +
                       "    <element key=\"1\">\n" +
                       "        <content>内容1</content>\n" +
                       "    </element>\n" +
                       "    <element key=\"2\">\n" +
                       "        <content>内容2</content>\n" +
                       "    </element>\n" +
                       "    <element key=\"3\">\n" +
                       "        <content>内容3</content>\n" +
                       "    </element>\n" +
                       "</root>";

        Document document = XML.toDocument(xml);
        XPath xpath = XPathFactory.newInstance().newXPath();
        XPathExpression expression = xpath.compile("//*[contains(@key, 'element') and not(contains(@key, 'last'))]");
        NodeList nodes = (NodeList) expression.evaluate(document, XPathConstants.NODESET);

        for (int i = 0; i < nodes.getLength(); i++) {
            Element element = (Element) nodes.item(i);
            System.out.println(element.getAttribute("key"));
        }
    }
}

xmlDocPtr doc = xmlReadMemory(xml_str, strlen(xml_str), NULL, NULL, 0);

if (doc == NULL) {

    fprintf(stderr, "Error parsing XML: %s\n", strerror(XML_ERROR_NO_MEMORY));

    return;

}

xmlXPathContextPtr context = xmlXPathNewContext(doc);

if (context == NULL) {

    fprintf(stderr, "Error creating XPath context\n");

    xmlFreeDoc(doc);

    return;

}

// 定义XPath表达式

xmlChar* xpath = xmlCharStrdup(BAD_CAST "//*[contains(@key, 'element') and not(contains(@key, 'last'))]");

if (xpath == NULL) {

    fprintf(stderr, "Error allocating XPath expression: %s\n", strerror(XML_ERROR_NO_MEMORY));

    xmlXPathFreeContext(context);

    xmlFreeDoc(doc);

    return;

}

// 执行XPath表达式，查找符合条件的节点

xmlNode* node = xmlXPathEvalExpression(context, xpath, NULL, NULL);

if (node == NULL) {

    fprintf