微信公眾號開發之微信JSSDK

wx.config({
    debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
    appId: '', // 必填，公众号的唯一标识
    timestamp: , // 必填，生成签名的时间戳
    nonceStr: '', // 必填，生成签名的随机串
    signature: '',// 必填，签名，见附录1
    jsApiList: [] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
});

wx.ready(function(){

    // config信息验证后会执行ready方法，所有接口调用都必须在config接口获得结果之后，config是一个客户端的异步操作，所以如果需要在页面加载时就调用相关接口，则须把相关接口放在ready函数中调用来确保正确执行。对于用户触发时才调用的接口，则可以直接调用，不需要放在ready函数中。
});

wx.error(function(res){

    // config信息验证失败会执行error函数，如签名过期导致验证失败，具体错误信息可以打开config的debug模式查看，也可以在返回的res参数中查看，对于SPA可以在这里更新签名。

});

public class JSSDKHelper
    {
        public JSSDKHelper()
        {
            Parameters = new Hashtable();
        }
        protected Hashtable Parameters;
        /// <summary>
        /// 设置参数值
        /// </summary>
        /// <param name="parameter"></param>
        /// <param name="parameterValue"></param>
        private void SetParameter(string parameter, string parameterValue)
        {
            if (!string.IsNullOrEmpty(parameter))
            {
                if (Parameters.Contains(parameter))
                {
                    Parameters.Remove(parameter);
                }
                Parameters.Add(parameter, parameterValue);
            }
        }
        private void ClearParameter()
        {
            Parameters.Clear();
        }
        /// <summary>
        /// 获取随机字符串
        /// </summary>
        /// <returns></returns>
        public static string GetNoncestr()
        {
            Random random = new Random();
            return MD5Util.GetMD5(random.Next(1000).ToString(), "GBK");
        }
        /// <summary>
        /// 获取时间戳
        /// </summary>
        /// <returns></returns>
        public static string GetTimestamp()
        {
            TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
            return Convert.ToInt64(ts.TotalSeconds).ToString();
        }
        /// <summary>
        /// sha1加密
        /// </summary>
        /// <returns></returns>
        private string CreateSha1()
        {
            StringBuilder sb = new StringBuilder();
            ArrayList akeys = new ArrayList(Parameters.Keys);
            akeys.Sort();
            foreach (string k in akeys)
            {
                string v = (string)Parameters[k];
                if (sb.Length == 0)
                {
                    sb.Append(k + "=" + v);
                }
                else
                {
                    sb.Append("&" + k + "=" + v);
                }
            }
            return SHA1UtilHelper.GetSha1(sb.ToString()).ToString().ToLower();
        }
        /// <summary>
        /// 生成cardSign的加密方法
        /// </summary>
        /// <returns></returns>
        private string CreateCardSha1()
        {
            StringBuilder sb = new StringBuilder();
            ArrayList akeys = new ArrayList(Parameters.Keys);
            akeys.Sort();
            foreach (string k in akeys)
            {
                string v = (string)Parameters[k];
                sb.Append(v);
            }
            return SHA1UtilHelper.GetSha1(sb.ToString()).ToString().ToLower();
        }
        /// <summary>
        /// 获取JS-SDK权限验证的签名Signature
        /// </summary>
        /// <param name="ticket"></param>
        /// <param name="noncestr"></param>
        /// <param name="timestamp"></param>
        /// <param name="url"></param>
        /// <returns></returns>
        public string GetSignature(string ticket, string noncestr, string timestamp, string url)
        {
            //清空Parameters
            ClearParameter();
            SetParameter("jsapi_ticket", ticket);
            SetParameter("noncestr", noncestr);
            SetParameter("timestamp", timestamp);
            SetParameter("url", url);
            return CreateSha1();
        }
        /// <summary>
        /// 获取位置签名AddrSign
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="appSecret"></param>
        /// <param name="noncestr"></param>
        /// <param name="timestamp"></param>
        /// <param name="url"></param>
        /// <returns></returns>
        public string GetAddrSign(string appId, string appSecret, string noncestr, string timestamp, string url)
        {
            //清空Parameters
            ClearParameter();
            var accessToken = AccessTokenContainer.TryGetToken(appId, appSecret);
            SetParameter("appId", appId);
            SetParameter("noncestr", noncestr);
            SetParameter("timestamp", timestamp);
            SetParameter("url", url);
            SetParameter("accesstoken", accessToken);
            return CreateSha1();
        }
        /// <summary>
        /// 获取卡券签名CardSign
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="appSecret"></param>
        /// <param name="locationId"></param>
        /// <param name="noncestr"></param>
        /// <param name="timestamp"></param>
        /// <param name="cardId"></param>
        /// <param name="cardType"></param>
        /// <returns></returns>
        public string GetCardSign(string appId, string appSecret, string locationId, string noncestr, string timestamp, string cardId, string cardType)
        {
            //清空Parameters
            ClearParameter();
            SetParameter("appId", appId);
            SetParameter("appsecret", appSecret);
            SetParameter("location_id", locationId);
            SetParameter("nonce_str", noncestr);
            SetParameter("times_tamp", timestamp);
            SetParameter("card_id", cardId);
            SetParameter("card_type", cardType);
            return CreateCardSha1();
        }
    }