如果未输入OU路径，请改为设置默认值

<dependency>
    <groupId>org.jdom</groupId>
    <artifactId>jdom2</artifactId>
    <version>2.0.6</version>
</dependency>

import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.input.SAXBuilder;
import org.jdom2.output.Format;
import org.jdom2.output.XMLOutputter;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.List;

public class TestNGXmlModifier {

    public static void main(String[] args) {
        String filePath = "path/to/your/testng.xml"; // 替换为你的testng.xml文件路径
        String defaultOU = "default/OU/path"; // 设置默认的OU路径

        try {
            // 加载testng.xml文件
            SAXBuilder saxBuilder = new SAXBuilder();
            Document document = saxBuilder.build(new File(filePath));

            // 获取根元素
            Element rootElement = document.getRootElement();

            // 修改XML内容
            modifyTestNGXml(rootElement, defaultOU);

            // 保存修改后的XML文件
            saveTestNGXml(document, filePath);

            System.out.println("testng.xml文件已成功修改并保存。");

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static void modifyTestNGXml(Element rootElement, String defaultOU) {
        // 获取所有<parameter>元素
        List<Element> parameterElements = rootElement.getChildren("parameter");

        for (Element parameterElement : parameterElements) {
            // 检查是否有名为"OU"的参数
            if ("OU".equals(parameterElement.getAttributeValue("name"))) {
                // 如果OU参数的值为空或未设置，则设置默认值
                if (parameterElement.getAttributeValue("value") == null || parameterElement.getAttributeValue("value").isEmpty()) {
                    parameterElement.setAttribute("value", defaultOU);
                }
            }
        }
    }

    private static void saveTestNGXml(Document document, String filePath) throws IOException {
        XMLOutputter xmlOutputter = new XMLOutputter();
        xmlOutputter.setFormat(Format.getPrettyFormat());
        try (FileWriter fileWriter = new FileWriter(filePath)) {
            xmlOutputter.output(document, fileWriter);
        }
    }
}