将带有POSTMAN的POST请求发送到Java REST API并在xml响应中获取空值

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.ByteArrayInputStream;

public class XmlParser {
    public static void main(String[] args) {
        // 假设响应的XML数据为responseXml
        String responseXml = "<response><result></result></response>";

        try {
            // 创建DocumentBuilderFactory实例
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();

            // 将XML字符串转换为InputStream
            ByteArrayInputStream input = new ByteArrayInputStream(responseXml.getBytes("UTF-8"));

            // 解析XML
            Document doc = builder.parse(input);

            // 获取根节点
            Element root = doc.getDocumentElement();

            // 获取result节点的值
            NodeList nodeList = root.getElementsByTagName("result");
            if (nodeList.getLength() > 0) {
                Node resultNode = nodeList.item(0);
                String resultValue = resultNode.getTextContent();
                System.out.println("Result: " + resultValue);
            } else {
                System.out.println("Result not found");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}