allPayCheckMacValue.java

public static boolean verify(WORequest r) {
    // request all post argument
    HashMap<String, String> myMap = new HashMap<String, String>();
    if(HypoUtility.safeTrim(r.stringFormValueForKey("MerchantID")).equals(MERCHANT_ID)){
      myMap.put("MerchantID", MERCHANT_ID);
    } else{
      log.info("allpayAlipay MerchantID is not Our ID");
      return false;
    }
    myMap.put("MerchantTradeNo", HypoUtility.safeTrim(r.stringFormValueForKey("MerchantTradeNo")) );
    myMap.put("RtnCode", HypoUtility.safeTrim(r.stringFormValueForKey("RtnCode")) );
    myMap.put("TradeAmt", HypoUtility.safeTrim(r.stringFormValueForKey("RtnCode")) );
    myMap.put("RtnMsg", HypoUtility.safeTrim(r.stringFormValueForKey("RtnMsg")) );
    myMap.put("TradeNo", HypoUtility.safeTrim(r.stringFormValueForKey("TradeNo")) );
    myMap.put("PaymentDate", HypoUtility.safeTrim(r.stringFormValueForKey("PaymentDate")) );
    myMap.put("PaymentType", HypoUtility.safeTrim(r.stringFormValueForKey("PaymentType")) );
    myMap.put("PaymentTypeChargeFee", HypoUtility.safeTrim(r.stringFormValueForKey("PaymentTypeChargeFee")) );
    myMap.put("TradeDate", HypoUtility.safeTrim(r.stringFormValueForKey("TradeDate")) );
    myMap.put("SimulatePaid", HypoUtility.safeTrim(r.stringFormValueForKey("SimulatePaid")) );


    String hashKeyString = "HashKey=" + HashKey;
    String hashIvString = "HashIV=" + HashIV;
    String CheckMacValue = HypoUtility.safeTrim(r.stringFormValueForKey("CheckMacValue"));
    
    String[] arguList = { "MerchantID", "MerchantTradeNo",
        "RtnCode", "TradeAmt", "RtnMsg", "TradeNo",
        "PaymentDate", "PaymentType", "PaymentTypeChargeFee", "TradeDate",
        "SimulatePaid"};
    Arrays.sort(arguList);
    if (!"1".equals(myMap.get("RtnCode") ))
    { 
      log.info("allpayAlipay RtnCode is not 1");
      return false; 
    }
    
    StringBuffer tempS = new StringBuffer();
    tempS.append(hashKeyString + "&");
    for (int i = 0; i < arguList.length; i++) {
      tempS.append(arguList[i] + "=" + myMap.get(arguList[i]) + "&");
    }
    tempS.append(hashIvString);
    String finalS ="";
    MessageDigest md;
    StringBuffer sb = new StringBuffer();
    try {
      finalS = URLEncoder.encode(tempS.toString(), "UTF-8");
      finalS = finalS.toLowerCase();
      md = MessageDigest.getInstance("MD5");
      byte[] bytesOfMessage = finalS.getBytes("UTF-8");
      byte[] thedigest = md.digest(bytesOfMessage);     
      for (int i = 0; i < thedigest.length; ++i) {
        sb.append(Integer.toHexString((thedigest[i] & 0xFF) | 0x100).substring(
            1, 3));
      }
    } catch (UnsupportedEncodingException | NoSuchAlgorithmException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    if(myMap.get("SimulatePaid").equals("1")){
      log.info("Our CheckValue is : ");
      log.info(sb.toString().toUpperCase());
      log.info("Allpay CheckValue is : ");
      log.info(CheckMacValue);
    }
    if( sb.toString().toUpperCase().equals(CheckMacValue.toUpperCase()) ){
      return true;
    }else{
      System.out.println(sb.toString());
      log.info("allpayAlipay CheckMacValue is not Correct!");
    } 
    
    return false;
  }