需求描述：后端接受xml格式数据，解析出相应数据，并返回xml格式数据。

		<!--XML解析--><dependency><groupId>com.fasterxml.jackson.dataformat</groupId><artifactId>jackson-dataformat-xml</artifactId></dependency><dependency><groupId>com.thoughtworks.xstream</groupId><artifactId>xstream</artifactId><version>1.4.9</version></dependency>

package com.zlp.cps.dto;import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;/*** 接收xml格式数据解析类* * @author zlp* @date 2023/8/25**/
@Data
@XStreamAlias("xml")
public class WxUserMessageModel {@XStreamAlias("ToUserName")private String toUserName;@XStreamAlias("FromUserName")private String fromUserName;@XStreamAlias("CreateTime")private Long createTime;@XStreamAlias("MsgType")private String msgType;@XStreamAlias("Content")private String content;@XStreamAlias("MsgId")private String msgId;@XStreamAlias("Title")private String title;@XStreamAlias("Description")private String description;@XStreamAlias("Url")private String url;/*** 订阅或者取消订阅的事件*/@XStreamAlias("Event")private String event;@XStreamAlias("EventKey")private String eventkey;
}

    public String acceptMsg(HttpServletRequest request, ServletResponse response) {// 数据提取StringBuffer reqXmlData = new StringBuffer();try {InputStream inputStream = request.getInputStream();String s;BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));while ((s = in.readLine()) != null) {reqXmlData.append(s);}in.close();inputStream.close();} catch (IOException e) {System.out.println("流解析xml数据异常!");e.printStackTrace();}//判断请求数据是否为空if (reqXmlData.length() <= 0) {System.out.println("请求数据为空!");}//json类型数据JSONObject jsonObject = XML.toJSONObject(reqXmlData.toString());log.info("xml :{}", jsonObject.toString());Object obj = jsonObject.get("xml");JSONObject data = JSONUtil.parseObj(obj);String fromUserName = data.get("FromUserName").toString();String toUser = data.get("ToUserName").toString();String context = data.get("Content").toString();// 返回数据WxUserMessageModel responseXmlData = new WxUserMessageModel();responseXmlData.setToUserName(fromUserName);responseXmlData.setFromUserName(toUser);responseXmlData.setCreateTime(System.currentTimeMillis());responseXmlData.setMsgType("text");// 按需编写业务if (context.startsWith(GzhConstant.tbSearch)) {String[] split = context.split("\\+");context = split[1];long pageNum = 1L;if (split.length > 2) {pageNum = Long.parseLong(split[2]);}// 调用淘宝商品搜索服务TbCpsReq req = new TbCpsReq();req.setKeyword(context);req.setPageNum(pageNum);req.setPageSize(8L);BaseResponse search = tbCpsService.search(req);List<TbMaterialData> list = (List<TbMaterialData>) search.getData();if (ListUtil.isEmpty(list)) {context = "该商品暂时没有优惠券";} else {context = convertSearchToMsg(list);}} else if (context.startsWith(GzhConstant.pddSearch)) {context = "拼多多搜索服务升级中!!!";} else if (context.startsWith(GzhConstant.jdSearch)) {context = "京东搜索服务升级中!!!";} else {return GzhConstant.defaultReply;}responseXmlData.setContent(context);XStream xstream = new XStream();xstream.processAnnotations(WxUserMessageModel.class);xstream.setClassLoader(WxUserMessageModel.class.getClassLoader());log.info("return xml : {}", xstream.toXML(responseXmlData));return xstream.toXML(responseXmlData);  //XStream的方法，直接将对象转换成 xml数据}