C#開發(fā)微信門戶及應(yīng)用(40)--使用微信JSAPI實(shí)現(xiàn)微信支付功能
2021-07-25 20:32:33

    wx.config({
        debug: false,
        appId: appid, // 必填，公眾號(hào)的唯一標(biāo)識(shí)
        timestamp: timestamp, // 必填，生成簽名的時(shí)間戳
        nonceStr: noncestr, // 必填，生成簽名的隨機(jī)串
        signature: signature, // 必填，簽名，見附錄1
        jsApiList: [
           'checkJsApi',
           'chooseWXPay',
           'hideOptionMenu'
        ]
    });

wx.chooseWXPay({
    timestamp: 0, // 支付簽名時(shí)間戳，注意微信jssdk中的所有使用timestamp字段均為小寫。但最新版的支付后臺(tái)生成簽名使用的timeStamp字段名需大寫其中的S字符
    nonceStr: '', // 支付簽名隨機(jī)串，不長(zhǎng)于 32 位
    package: '', // 統(tǒng)一支付接口返回的prepay_id參數(shù)值，提交格式如：prepay_id=***）
    signType: '', // 簽名方式，默認(rèn)為'SHA1'，使用新版支付需傳入'MD5'
    paySign: '', // 支付簽名
    success: function (res) {
        // 支付成功后的回調(diào)函數(shù)
    }
});

獲取code后，請(qǐng)求以下鏈接獲取access_token： 
https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code

        /// <summary>
        /// 獲取JSAPI_TICKET接口
        /// </summary>
        /// <param name="accessToken">調(diào)用接口憑證</param>
        /// <returns></returns>
        public string GetJSAPI_Ticket(string accessToken)
        {
            var url = string.Format("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token={0}&type=jsapi", accessToken);
            var result = JsonHelper<GetTicketResult>.ConvertJson(url);
            return result != null ? result.ticket : null;
        }

        /// <summary>
        /// 獲取JSSDK所需要的參數(shù)信息，返回Hashtable結(jié)合
        /// </summary>
        /// <param name="appId">微信AppID</param>
        /// <param name="jsTicket">根據(jù)Token獲取到的JSSDK ticket</param>
        /// <param name="url">頁(yè)面URL</param>
        /// <returns></returns>
        public static Hashtable GetParameters(string appId, string jsTicket, string url)
        {
            string timestamp = GetTimeStamp();
            string nonceStr = GetNonceStr();

            // 這里參數(shù)的順序要按照 key 值 ASCII 碼升序排序  
            string rawstring = "jsapi_ticket=" + jsTicket + "&noncestr=" + nonceStr + "&timestamp=" + timestamp + "&url=" + url + "";

            string signature = GetSignature(rawstring);
            Hashtable signPackage = new Hashtable();
            signPackage.Add("appid", appId);
            signPackage.Add("noncestr", nonceStr);
            signPackage.Add("timestamp", timestamp);
            signPackage.Add("url", url);
            signPackage.Add("signature", signature);
            signPackage.Add("jsapi_ticket", jsTicket);
            signPackage.Add("rawstring", rawstring);

            return signPackage;
        }

    wx.config({
        debug: false,
        appId: appid, // 必填，公眾號(hào)的唯一標(biāo)識(shí)
        timestamp: timestamp, // 必填，生成簽名的時(shí)間戳
        nonceStr: noncestr, // 必填，生成簽名的隨機(jī)串
        signature: signature, // 必填，簽名，見附錄1
        jsApiList: [
           'checkJsApi',
           'chooseWXPay',
           'hideOptionMenu'
        ]
    });

        /// <summary>
        /// 刷新JS-SDK的票據(jù)
        /// </summary>
        protected virtual void RefreshTicket(AccountInfo accountInfo)
        {
            Hashtable ht = baseApi.GetJSAPI_Parameters(accountInfo.AppID, accountInfo.AppSecret, Request.Url.AbsoluteUri);
            ViewBag.appid = ht["appid"].ToString();
            ViewBag.nonceStr = ht["noncestr"].ToString();
            ViewBag.timestamp = ht["timestamp"].ToString();
            ViewBag.signature = ht["signature"].ToString();
        }

    <script language="javascript">
    var openid = '@ViewBag.openid';
    var appid = '@ViewBag.appid';
    var noncestr = '@ViewBag.noncestr';
    var signature = '@ViewBag.signature';
    var timestamp = '@ViewBag.timestamp';

    wx.config({
        debug: false,
        appId: appid, // 必填，公眾號(hào)的唯一標(biāo)識(shí)
        timestamp: timestamp, // 必填，生成簽名的時(shí)間戳
        nonceStr: noncestr, // 必填，生成簽名的隨機(jī)串
        signature: signature, // 必填，簽名，見附錄1
        jsApiList: [
           'checkJsApi',
           'chooseWXPay',
           'hideOptionMenu'
        ]
    });

wx.chooseWXPay({
    timestamp: 0, // 支付簽名時(shí)間戳，注意微信jssdk中的所有使用timestamp字段均為小寫。但最新版的支付后臺(tái)生成簽名使用的timeStamp字段名需大寫其中的S字符
    nonceStr: '', // 支付簽名隨機(jī)串，不長(zhǎng)于 32 位
    package: '', // 統(tǒng)一支付接口返回的prepay_id參數(shù)值，提交格式如：prepay_id=***）
    signType: '', // 簽名方式，默認(rèn)為'SHA1'，使用新版支付需傳入'MD5'
    paySign: '', // 支付簽名
    success: function (res) {
        // 支付成功后的回調(diào)函數(shù)
    }
});

prepay_id=wx2016051517463160322779de0375788970

                PayOrderData data = new PayOrderData()
                {
                    product_id = id,
                    body = "測(cè)試支付" + id,
                    attach = "愛奇迪技術(shù)支持",
                    detail = "測(cè)試JSAPI支付" + id,
                    total_fee = 1,
                    goods_tag = "test" + id,
                    trade_type = "JSAPI",
                    openid = openid
                };

                TenPayApi api = new TenPayApi(accountInfo);
                var orderResult = api.UnifiedOrder(data);
                LogHelper.Debug(string.Format("統(tǒng)一下單結(jié)果:{0}", (orderResult != null) ? orderResult.ToJson() : "為空值"));
                
                if (string.IsNullOrEmpty(orderResult.prepay_id) || string.IsNullOrEmpty(orderResult.appid))
                {
                    throw new WeixinException("統(tǒng)一下單結(jié)果返回失??！");
                }

        /// <summary>
        /// 獲取JSAPI方式的微信字符串參數(shù)對(duì)象
        /// </summary>
        /// <param name="accountInfo">當(dāng)前賬號(hào)</param>
        /// <param name="prepay_id">統(tǒng)一下單ID</param>
        /// <returns></returns>
        private WxPayData GetJSPayParam(AccountInfo accountInfo, string prepay_id)
        {
            WxPayData data = new WxPayData();
            data.SetValue("appId", ViewBag.appId);
            data.SetValue("timeStamp", data.GenerateTimeStamp());
            data.SetValue("nonceStr", data.GenerateNonceStr());
            data.SetValue("signType", "MD5");
            data.SetValue("package", string.Format("prepay_id={0}", prepay_id));

            data.SetValue("paySign", data.MakeSign(accountInfo.PayAPIKey));//簽名
            return data;
        }

                //支付需要的參數(shù)
                WxPayData param = GetJSPayParam(accountInfo, orderResult.prepay_id);
                LogHelper.Debug("GetJSPayParam：" + param.ToJson());

                var obj = new
                {
                    timeStamp = param.GetString("timeStamp"),
                    nonceStr = param.GetString("nonceStr"),
                    signType = param.GetString("signType"),
                    package = param.GetString("package"),
                    paySign = param.GetString("paySign")
                };
                return Content(obj.ToJson());

    //發(fā)起一個(gè)微信支付
    function chooseWXPay(id) {
        //alert(window.location.href);
        var uid = getUrlVars()["uid"];
        $.ajax({
            type: 'POST',
            url: '/JSSDKTest/GetWXPayData',
            //async: false, //同步
            dataType: 'json',
            data : {
                id: id,
                uid: uid,
                openid : openid
            },
            success: function (json) {
                wx.chooseWXPay({
                    appId: appid,
                    timestamp: json.timeStamp,  // 支付簽名時(shí)間戳，注意微信jssdk中的所有使用timestamp字段均為小寫。但最新版的支付后臺(tái)生成簽名使用的timeStamp字段名需大寫其中的S字符
                    nonceStr: json.nonceStr,    // 支付簽名隨機(jī)串，不長(zhǎng)于 32 位
                    package: json.package,      // 統(tǒng)一支付接口返回的prepay_id參數(shù)值，提交格式如：prepay_id=***）
                    signType: json.signType,    // 簽名方式，默認(rèn)為'SHA1'，使用新版支付需傳入'MD5'
                    paySign: json.paySign,      // 支付簽名
                    success: function (res) {   // 支付成功后的回調(diào)函數(shù)
                        if (res.errMsg == 'chooseWXPay:ok') {
                            $.toast('支付成功');
                            //setTimeout(function () {
                            //    window.location.href = "/";//這里默認(rèn)跳轉(zhuǎn)到主頁(yè)
                            //}, 2000);
                            //window.location.href = "/Pay/order_details?order#orderId").val();
                        } else if (res.errMsg == 'chooseWXPay:cancel' || res.errMsg == 'chooseWXPay:fail') {
                            $.toast("支付失敗");
                            //window.location.href = "/Pay/order_details?order#orderId").val();
                        }                        
                    },
                    cancel: function () {
                        $.toast("用戶取消了支付");
                        //window.location.href = "/Pay/order_details?order#orderId").val();
                    }
                });
                wx.error(function (res) {
                    $.toast("調(diào)用支付出現(xiàn)異常");
                    //window.location.href = "/Pay/order_details?order#orderId").val();
                })
            },
            error: function (xhr, status, error) {
                $.toast("操作失敗" + xhr.responseText); //xhr.responseText
            }
        });
    };