目錄

• 1 應用場景
• • 1.1 企微后臺配置
  • 1.2 配置配置項
• 2 回調接口
• • 2.1 請求方式get
  • 2.2 請求方式post
• 3 解析xml代碼

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1 應用場景

審批回調，其實任何需要回調的接口邏輯相同，會一種即可

企業微信后臺配置接口地址細心的同學已經發現了，這貨的參數跟微信的差不了多少。

1.1 企微后臺配置

1.2 配置配置項

其一是回調的接口地址，其二是需要驗簽用的token，其三是隨機的key，然后我們看一下回調接口的回調參數

2 回調接口

2.1 請求方式get

這個是企微文檔的回調接口

然后看到回調參數有

msg_signature=ASDFQWEXZCVAQFASDFASDFSS
timestamp=13500001234
nonce=123412323
echostr=ENCRYPT_STR
根據企微提供的加密類我們可以直接對該參數進行解密

post請求為企微驗證通過之后發送的數據（接口地址與get請求一樣）

接口實現
首先是get請求

/*** get 請求 驗簽.** @param msgSignature 加密* @param timestamp 時間戳* @param nonce 隨機* @param echostr .* @param response .* @throws Exception .*/@GetMapping(value = "/callback")public void reveiceMsg(@RequestParam(name = "msg_signature") final String msgSignature,@RequestParam(name = "timestamp") final String timestamp,@RequestParam(name = "nonce") final String nonce,@RequestParam(name = "echostr") final String echostr,final HttpServletResponse response) throws Exception {//企業回調的url-----該url不做任何的業務邏輯，僅僅微信查看是否可以調通.WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(token,corpid, encodingAesKey);// 隨機字符串String sEchoStr = wxcpt.verifyURL(msgSignature, timestamp, nonce, echostr);PrintWriter out = response.getWriter();try {//必須要返回解密之后的明文if (StringUtils.isBlank(sEchoStr)) {System.out.println("URL驗證失敗");} else {System.out.println("驗證成功!");}} catch (Exception e) {e.printStackTrace();}out.write(sEchoStr);out.flush();}

get請求有可能解密失敗

2.2 請求方式post

/*** 企業微信客戶聯系回調.** @param request request* @param sMsgSignature 簽名* @param sTimestamp 時間戳* @param sNonce 隨機值* @return success*/@ResponseBody@PostMapping(value = "/callback")public String callback(final HttpServletRequest request,@RequestParam(name = "msg_signature") final String sMsgSignature,@RequestParam(name = "timestamp") final String sTimestamp,@RequestParam(name = "nonce") final String sNonce) {try {InputStream inputStream = request.getInputStream();String sPostData = IOUtils.toString(inputStream, "UTF-8");WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(token,corpid, encodingAesKey); //解密String sMsg = msgCrypt.decryptMsg(msgSignature, timeStamp, String nonce, postData);//將post數據轉換為mapMap<String, String> dataMap = MessageUtil.parseXml(sMsg);//然后去操作你的業務邏輯} catch (Exception e) {e.printStackTrace();}return "success";}

配置完成調試接口即可

3 解析xml代碼

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();DocumentBuilder db = dbf.newDocumentBuilder();StringReader sr = new StringReader(msg);InputSource is = new InputSource(sr);Document document = db.parse(is);Element root = document.getDocumentElement();// 獲取提交用戶IDNodeList ApprovalInfo = root.getElementsByTagName("ApprovalInfo");if (ApprovalInfo == null || ApprovalInfo.getLength() == 0) {logger.error("ApprovalInfo is null");logger.error(msg);return;}// 獲取審批狀態String spNo = "";String spStatus = "";NodeList nodes = ApprovalInfo.item(0).getChildNodes();for (int i = 0; i < nodes.getLength(); i++) {Node node = nodes.item(i);String nodeName = node.getNodeName();String text = node.getTextContent();if ("SpNo".equals(nodeName)) {spNo = text;} else if ("SpStatus".equals(nodeName)) {spStatus = text;}}

可能有xml轉java對象但是我用起來不是很好用，個人覺得還很差勁，所以我想用xml轉jsonobject好一些

import org.apache.commons.lang.StringUtils; import org.jdom2.Document; import org.jdom2.JDOMException; import com.alibaba.fastjson.JSONObject; import org.jdom2.Element; import org.jdom2.input.SAXBuilder;import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.util.LinkedList; import java.util.List;/*** Created by alany on 2018/7/10.*/ public class XmlUtils {public static JSONObject xml2Json(String xmlStr) throws JDOMException, IOException {if (StringUtils.isEmpty(xmlStr)) {return null;}xmlStr = xmlStr.replaceAll("\\\n", "");byte[] xml = xmlStr.getBytes("UTF-8");JSONObject json = new JSONObject();InputStream is = new ByteArrayInputStream(xml);SAXBuilder sb = new SAXBuilder();Document doc = sb.build(is);Element root = doc.getRootElement();json.put(root.getName(), iterateElement(root));return json;}private static JSONObject iterateElement(Element element) {List<Element> node = element.getChildren();JSONObject obj = new JSONObject();List list = null;for (Element child : node) {list = new LinkedList();String text = child.getTextTrim();if (StringUtils.isBlank(text)) {if (child.getChildren().size() == 0) {continue;}if (obj.containsKey(child.getName())) {list = (List) obj.get(child.getName());}list.add(iterateElement(child)); //遍歷child的子節點obj.put(child.getName(), list);} else {if (obj.containsKey(child.getName())) {Object value = obj.get(child.getName());try {list = (List) value;} catch (ClassCastException e) {list.add(value);}}if (child.getChildren().size() == 0) { //child無子節點時直接設置textobj.put(child.getName(), text);} else {list.add(text);obj.put(child.getName(), list);}}}return obj;}

用到的依賴

<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.32</version></dependency><dependency><groupId>org.jdom</groupId><artifactId>jdom</artifactId><version>2.0.2</version></dependency>

總結

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