微信小程序页面使用wx.addcard

onLoad: function (options) {    var that = this;    wx.request({        url: that.data.getdataUrl, //获取所需的数据的接口地址        data: { cardId:"pN_xS1rQhJzL4F_7-OzRcTUuVuTe"},   //卡券id        header: {            'content-type': 'application/json' //默认值            },        success: function (res) {            let cardExt = {            timestamp: res.data.timestamp,    //时间戳，以秒为单位            nonce_str: res.data.nonceStr,     //随机字符串            signature: res.data.signature,   //签名                api_ticket: res.data.ticket,    //apiticket            }            console.log(JSON.stringify(cardExt));            wx.addCard({                cardList: [{                    cardId: res.data.cardId,                    cardExt: JSON.stringify(cardExt),                }],                success(res) {                    console.log(res.cardList) // 卡券添加结果                }            })        }    });}

在小程序里用wx.addcard不需要wx.config

服务端

    @Autowiredprivate RedisDao redisDao;/**   *    获取token * @param region * @param appid * @param AppSecret * @return */@Overridepublic String getToken(String appid, String AppSecret) {try {String httpsURL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+appid+"&secret="+AppSecret;byte[] bytes = HttpsUtil.doGet(httpsURL);String Str = new String(bytes);JSONObject jsonObject = JSONObject.fromObject(Str);return jsonObject.getString("access_token");} catch (Exception e) {e.printStackTrace();}return "";}/** * 获取apiticket * @param token * @return */@Overridepublic String getApiTicket(String token) {try {String httpsURL = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+token+"&type=wx_card";byte[] bytes = HttpsUtil.doGet(httpsURL);String Str = new String(bytes);JSONObject jsonObject = JSONObject.fromObject(Str);return jsonObject.getString("ticket");} catch (Exception e) {e.printStackTrace();}return "";}/** * 领取卡券 */@Overridepublic Map<String, Object> receiveCard(String cardId) {//从redis取出tokenString token = redisDao.get(BreakGoldEggConst.TOKEN_KEY);//若redis中没有token，则访问微信接口获取tokenif(StringUtils.isBlank(token)) {token = this.getToken(BreakGoldEggConst.WX_APPID, BreakGoldEggConst.WX_APPSECRET);redisDao.addString(BreakGoldEggConst.TOKEN_KEY, token, BreakGoldEggConst.TOKEN_TIMEOUT);}//从redis取出apiticketString ticket = redisDao.get(BreakGoldEggConst.TICKET_KEY);//若redis中没有apiticket，则访问微信接口获取apiticketif(StringUtils.isBlank(ticket)) {ticket = this.getApiTicket(token);redisDao.addString(BreakGoldEggConst.TICKET_KEY, ticket, BreakGoldEggConst.TICKET_TIMEOUT);}//添加需要进行签名的参数ArrayList<String> m_param_to_sign = new ArrayList<String>();m_param_to_sign.add(ticket);String nonceStr = UuidUtil.get32UUID();m_param_to_sign.add(nonceStr);String timestamp = String.valueOf(System.currentTimeMillis()/1000);m_param_to_sign.add(timestamp);m_param_to_sign.add(cardId);//获取签名String signature = GetSignature(m_param_to_sign);Map<String,Object> resultMap = new HashMap<String, Object>();resultMap.put("ticket", ticket);resultMap.put("nonceStr", nonceStr);resultMap.put("timestamp", timestamp);resultMap.put("signature", signature);resultMap.put("cardId", cardId);return resultMap;}/** * 获取签名 * @param m_param_to_sign * @return */public String GetSignature(ArrayList<String> m_param_to_sign)    {        Collections.sort(m_param_to_sign);        StringBuilder string_to_sign = new StringBuilder();        for (String str : m_param_to_sign)        {            string_to_sign.append(str);        }        System.out.println("string_to_sign:" + string_to_sign);        try        {            MessageDigest hasher = MessageDigest.getInstance("SHA-1");            byte[] digest = hasher.digest(string_to_sign.toString().getBytes());            return ByteToHexString(digest);        } catch (NoSuchAlgorithmException e)        {            e.printStackTrace();            return "";        }    }        public String ByteToHexString(byte[] data)    {        StringBuilder str = new StringBuilder();        for (byte b : data)        {            String hv = Integer.toHexString(b & 0xFF);             if( hv.length() < 2 )                str.append("0");            str.append(hv);        }        return str.toString();    }

这里只提供大概的逻辑进行参考，工具类不做提供。

1、需要注意的是，token和apiticket的有效期只有两小时，所以这里我是把它们存在redis，设置过期时间。

2、需要用到的是apiticket！！！！！！！不是jsapiticket！！！！！！

      apiticket获取的接口是https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+token+"&type=wx_card

3、制作签名的方法代码是从微信公众平台下载的demo复制的。

4、制作签名的参数中的时间戳，是以秒为单位的！！！！！！  千万要注意！！！！！！！