微信卡券 H5 投放卡券 Java 代码

java 代码

js

public StringwxCard(String cardId){

String url ="https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=wx_card".replace("ACCESS_TOKEN", WXUtil.getaccess_token_func());

  String str = WXUtil.sendGet(url);

  JSONObject obj = JSONObject.fromObject(str);

  String api_ticket = obj.get("ticket").toString();

  String nonce_str =create_nonce_str();

  String timestamp =create_timestamp();

  String card_id = cardId;

  String signature ="";

  ArrayList list=new ArrayList();

  list.add(api_ticket);

  list.add(nonce_str);

  list.add(timestamp);

  list.add(card_id);

  Collections.sort(list);

  String sign =list.get(0) + list.get(1)+list.get(2)+list.get(3);

try

  {

MessageDigest crypt = MessageDigest.getInstance("SHA-1");

      crypt.reset();

      crypt.update(sign.getBytes("UTF-8"));

      signature =byteToHex(crypt.digest());

  }

catch (Exception e)

{

e.printStackTrace();

  }

JSONObject jsonObject =new JSONObject();

  jsonObject.put("code","");

  jsonObject.put("openid","");

  jsonObject.put("card_id",card_id);

  jsonObject.put("nonce_str",nonce_str);

  jsonObject.put("timestamp",timestamp);

  jsonObject.put("signature",signature);

  return jsonObject.toString();

}

private static StringbyteToHex(final byte[] hash) {

Formatter formatter =new Formatter();

  for (byte b : hash)

{

formatter.format("%02x", b);

  }

String result = formatter.toString();

  formatter.close();

  return result;

}

private static Stringcreate_nonce_str() {

return UUID.randomUUID().toString();

}

private static Stringcreate_timestamp() {

return Long.toString(System.currentTimeMillis() /1000);

}