Token verification and message processing methods for WeChat public platform development

This article introduces token verification and message processing methods for public platform development. This article introduces token verification and message processing methods for public platform development.

/***** @ Description: message processing and user group * @ author zhangjun * @ date 10:51:51 */public class WeiXinMessageAction extends BaseAction {/***/private static final long serialVersionUID = 1L; private IFeWeiXinMessageService weiXinExternalService; private String wxNo; public String responseMessgaeInfo () {Boolean isGet = request. getMethod (). inclusignorecase ("GET"); if (isGet) {validateSignature ();} else {saveWxMessage ();} return null;}/*** @ Description: receive post save accept message save only MsgType type is text information * @ param * @ return void * @ throws */private void saveWxMessage () {InputStream inputStream; try {request. setCharacterEncoding ("UTF-8"); Document doc = null; SAXReader reader = new SAXReader (); inputStream = request. getInputStream (); doc = reader. read (inputStream); Element root = doc. getRootElement (); String toUserName = root. element ("ToUserName "). getTextTrim (); String fromUserName = root. element ("FromUserName "). getTextTrim (); String content = root. element ("Content "). getTextTrim (); String msgType = root. element ("MsgType "). getTextTrim (); String msgId = root. element ("MsgId "). getTextTrim (); String createTime = root. element ("CreateTime "). getTextTrim (); // only save text messages // time System. out. println ("received message content:" + content + "--------------- msgType:" + msgType); if (WeiXinMsgType. TEXT. type. equals (msgType) {weiXinExternalService. addWxMessage (toUserName, fromUserName, content, msgType, msgId, formatTime (createTime) ;}} catch (Exception e) {e. printStackTrace () ;}/ ***** @ Description: the input CreateTime is converted to the long type * @ param createTime * @ param @ return * @ return Date * @ throws */private Date formatTime (String createTime) {long msgCreateTime = Long. parseLong (createTime) * 1000L; return new Date (msgCreateTime);}/***** @ Description: verify the signature * @ param * @ return void * @ throws */private void validateSignature () {PrintWriter out = null; try {String signature = request. getParameter ("signature"); String timestamp = request. getParameter ("timestamp"); String nonce = request. getParameter ("nonce"); out = response. getWriter (); if (checkSignature (signature, timestamp, nonce) {out. print (request. getParameter ("echostr");} catch (Exception e) {e. printStackTrace ();} finally {out. close (); out = null;}/***** @ Description: determine whether the token is valid * @ param signature * @ param timestamp * @ param nonce * @ param @ return * @ return boolean * @ throws */private boolean checkSignature (string signature, string timestamp, String nonce) {// Obtain the token based on the account and verify the Map
 
  
Map = new HashMap
  
   
(); Map. put ("wxNo", wxNo); WeiXinMasterConfig masterConfig = weiXinExternalService. selectWeiXinMasterConfig (map); if (masterConfig = null) {return false;} String [] arr = new String [] {masterConfig. getWxToken (), timestamp, nonce}; Arrays. sort (arr); StringBuilder content = new StringBuilder (); for (int I = 0; I <arr. length; I ++) {content. append (arr [I]);} MessageDigest md = null; String tmpStr = nul L; try {md = MessageDigest. getInstance ("SHA-1"); byte [] digest = md. digest (content. toString (). getBytes (); tmpStr = byteToStr (digest);} catch (NoSuchAlgorithmException e) {e. printStackTrace ();} content = null; return tmpStr! = Null? TmpStr. equals (signature. toUpperCase (): false;} // Convert bytes to a hexadecimal String private static String byteToHexStr (byte ib) {char [] Digit = {'0 ', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A ', 'B', 'C', 'D', 'e', 'F'}; char [] ob = new char [2]; ob [0] = Digit [(ib >>> 4) & 0X0F]; ob [1] = Digit [ib & 0X0F]; String s = new String (ob ); return s;} // Convert the byte array to a hexadecimal String private static String byteToStr (byte [] bytearray) {String strDigest = ""; for (int I = 0; I <bytearray. length; I ++) {strDigest + = byteToHexStr (bytearray [I]);} return strDigest ;}
  
 

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