引入pom

<dependency>
    <groupId>com.thoughtworks.xstream</groupId>
    <artifactId>xstream</artifactId>
    <version>1.4.19</version>
</dependency>

工具类

package com.xm.demo.util.xml;

import com.thoughtworks.xstream.XStream;

/**
 * @ClassName: XmlUtils2
 * @Description: XML和兑换互转简化版（基于xstream）
 * @author mengxc
 * @date 2022年4月8日 下午2:27:07
 */
public class XmlUtils {

	/**
	 * @Title: toBean
	 * @Description: 将xml字符串转为对象
	 * @param <T>   目标对象泛型
	 * @param clazz 转换后目标对象clazz
	 * @param xml   待转换XML
	 * @return 转换后目标对象
	 */
	@SuppressWarnings({ "deprecation", "unchecked" })
	public static <T> T toBean(Class<?> clazz, String xml) {
		T xmlObject = null;
		XStream xstream = new XStream();
		XStream.setupDefaultSecurity(xstream);
		xstream.processAnnotations(clazz);
		xstream.autodetectAnnotations(true);
		xstream.allowTypesByRegExp(new String[] { ".*" });
		xmlObject = (T) xstream.fromXML(xml);
		return xmlObject;
	}

	/**
	 * @Title: toXml
	 * @Description: 将对象转为xml字符串
	 * @param obj 待转换为xml的对象
	 * @return xml
	 */
	@SuppressWarnings("deprecation")
	public static String toXml(Object obj) {
		XStream xstream = new XStream();
		XStream.setupDefaultSecurity(xstream);
		xstream.autodetectAnnotations(true);//自动检测模式，默认
		xstream.allowTypesByRegExp(new String[] { ".*" });
		return xstream.toXML(obj);
	}

	/**
	 * @Title: toXml
	 * @Description: 将对象转为xml字符串(带头信息)
	 * @param obj     带转换为xml的对象
	 * @param charSet 编码
	 * @return xml
	 */
	@SuppressWarnings("deprecation")
	public static String toXml(Object obj, String charSet) {
		XStream xstream = new XStream();
		xstream.autodetectAnnotations(true);//自动检测模式，默认
		XStream.setupDefaultSecurity(xstream);
		xstream.allowTypesByRegExp(new String[] { ".*" });

		StringBuffer sb = new StringBuffer();
		sb.append("<?xml version=\"1.0\" encoding=\"").append(charSet.toUpperCase()).append("\"?>\n")
				.append(xstream.toXML(obj));
		return sb.toString();
	}
}

测试类

@Test
public void test3() {
    Response result = XmlUtils.toBean(Response.class, xml);
    log.info("XML转对象3：{}", result);
}

@Test
public void test4() {
    Response resp = new Response();
    resp.setCode(200);
    resp.setMsg("操作成功");
    resp.setResult(true);

    String xml = XmlUtils.toXml(resp);
    log.info("对象转XML4：{}", xml);
}

@Test
public void test5() {
    Response resp = new Response();
    resp.setCode(200);
    resp.setMsg("操作成功");
    resp.setResult(true);

    String xml = XmlUtils.toXml(resp,"gbk");
    log.info("对象转XML5：{}", xml);
}