1、controller

/**
     * 接收企业微信信息
     * @param map
     * @return
     */
    @RequestMapping(value = "/pom-attendances/getWeChatInfo/", method = { RequestMethod.GET, RequestMethod.POST })
    @Timed
    public Map<String, Object> getWeChatInfo(HttpServletRequest request, HttpServletResponse response) {
        Map<String, Object> mapResult = null;
        pomAttendanceService.getWeChatInfo(request, response);
        
        return mapResult;
    }

2、实现类

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

/**
     * 接收企业微信信息
     * @param map
     * @return
     */
    @Override
    public void getWeChatInfo(HttpServletRequest request, HttpServletResponse response) {
        System.out.println("******************************");
        //判断当前请求时GET还POST
        boolean isGet = request.getMethod().toLowerCase().equals("get");
        String sToken = applicationPomProperties.getsToken();
        String sCorpID = applicationPomProperties.getCorpid();
        String sEncodingAESKey = applicationPomProperties.getsEncodingAESKey();
        PrintWriter out = null;
        try {
            response.setContentType("text/html;charset=utf-8");
            request.setCharacterEncoding("utf-8");
            WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(sToken, sEncodingAESKey, sCorpID);
            //获取企业微信验证url参数
            String msg_signature = request.getParameter("msg_signature");
            String timestamp = request.getParameter("timestamp");
            String nonce = request.getParameter("nonce");
            String echostr = request.getParameter("echostr");
            
            out = response.getWriter();
            String sEchoStr; // 需要返回的明文
            if (isGet) {
                //验证
                sEchoStr = wxcpt.VerifyURL(msg_signature, timestamp,nonce, echostr);
                System.out.println("verifyurl echostr: " + sEchoStr);
                // 验证URL成功，将sEchoStr返回
                out.print(sEchoStr);
            //post请求
            }else {
                //获取post请求的数据
                BufferedReader reader = request.getReader();
                char[] buf = new char[512];
                int len = 0;
                StringBuffer contentBuffer = new StringBuffer();
                while ((len = reader.read(buf)) != -1) {
                    contentBuffer.append(buf, 0, len);
                }
                String content = contentBuffer.toString();
                if(content == null){
                    content = "";
                }
                
                //解密xml
                System.out.println(content);
                String sMsg = wxcpt.DecryptMsg(msg_signature, timestamp, nonce, content);
                System.out.println(sMsg);
                Map <String, String> map = new HashMap<>();
                Document doc;
                try {
                    doc = DocumentHelper.parseText(sMsg);
                    Element root = doc.getRootElement();
                    // 获取根节点下的所有元素
                    List children = root.elements();
                    // 循环所有子元素
                    if (children != null && children.size() > 0) {
                        for (int i = 0; i < children.size(); i++) {
                            Element child = (Element) children.get(i);
                            //xml转Map
                            map.put(child.getName(), child.getTextTrim());
                        }
                    }
                    String key =  map.get("EventKey");
                    ZonedDateTime now = ZonedDateTime.now();
                    
                    //获取审批人姓名，id
                    String checkUserName = map.get("FromUserName").toLowerCase();
                } catch (DocumentException e) {
                    e.printStackTrace();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally {  
            try {  
                if (out != null) {  
                    out.close();  
                }  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
        
    }