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
企業微信后台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 企微后台配置
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map
Map<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ID
NodeList 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text
obj.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>