微信内H5调起支付 ​

const mixinPay = {
  computed: {
    ...mapGetters(["l", "user", "config", "mock"]),
  },
  methods: {
    payByWechat({ shoppingOrderId, successCallback }) {
      const _this = this;
      const endPoint = "/pay/getWeixinPayInfo.action";
      _this.wait(true);
      const requestData = {
        openId: _this.user.openid,
        id: shoppingOrderId,
      };
      return doPost(endPoint, requestData)
        .done((data) => {
          if (data.status === "200" && !data.errorCode) {
            const options = {
              appId: data.responseBody.appid,
              timeStamp: data.responseBody.timestamp,
              nonceStr: data.responseBody.nonceStr,
              package: data.responseBody.package,
              signType: "MD5",
              paySign: data.responseBody.paySign,
            };
            // _this.alert({ text: JSON.stringify(options) })
            if (typeof window.WeixinJSBridge === "undefined") {
              if (window.document.addEventListener) {
                window.document.addEventListener(
                  "WeixinJSBridgeReady",
                  onBridgeReady.bind(null, options),
                  false,
                );
              } else if (window.document.attachEvent) {
                window.document.attachEvent(
                  "WeixinJSBridgeReady",
                  onBridgeReady.bind(null, options),
                );
                window.document.attachEvent(
                  "onWeixinJSBridgeReady",
                  onBridgeReady.bind(null, options),
                );
              }
            } else {
              onBridgeReady(options);
            }
          } else if (data.errorCode) {
            _this.alert({ text: `${data["errorMsg" + _this.l]}` });
          } else {
            _this.alert({
              text:
                _this.l === "En"
                  ? "Server responds abnormally"
                  : "服务器响应异常",
            });
          }
        })
        .fail((jqXHR, textStatus, errorThrown) => {
          _this.alert({
            text:
              _this.l === "En"
                ? "Failed to payment parameters"
                : "微信支付参数失败",
          });
        })
        .always(() => {
          _this.wait(false);
        });

      function onBridgeReady(options) {
        window.WeixinJSBridge.invoke(
          "getBrandWCPayRequest",
          options,
          function (data) {
            if (data && data.err_msg === "get_brand_wcpay_request:ok") {
              _this.toUpdateReceipt(shoppingOrderId, successCallback);
            } else if (
              data &&
              (data.err_msg === "get_brand_wcpay_request:cancel" ||
                data.err_msg === "get_brand_wcpay_request:fail")
            ) {
              _this.alert({
                text: _this.l === "En" ? "Failed to pay" : "未成功支付",
              });
            } else if (data && data.err_desc) {
              _this.alert({ text: data.err_desc });
            } else {
              _this.alert({
                text: _this.l === "En" ? "Failed to pay" : "支付失败",
              });
            }
          },
        );
      }
    },
    toUpdateReceipt(shoppingOrderId, successCallback) {
      const _this = this;
      const endPoint = "/orderInfo/updateReceipt.action";
      _this.wait(true);
      const requestData = {
        id: shoppingOrderId,
        status: 4,
      };
      doPost(endPoint, requestData)
        .done((data) => {
          if (data.status === "200" && !data.errorCode) {
            _this.alert({
              text: _this.l === "En" ? "Paid successfully" : "支付成功",
              callback() {
                if (successCallback && typeof successCallback === "function") {
                  successCallback();
                }
              },
            });
          } else {
            _this.alert({
              text:
                _this.l === "En"
                  ? "Paied successfully, but failed to update order status, please contact the service"
                  : "付款成功，送货单状态更新失败，请联系客服",
              callback() {
                if (successCallback && typeof successCallback === "function") {
                  successCallback();
                }
              },
            });
          }
          // else if (data.errorCode) {
          //   _this.alert({ text: `${data['errorMsg' + _this.l]}` })
          // } else {
          //   _this.alert({ text: JSON.stringify(data) })
          // }
        })
        .fail(() => {
          _this.alert({
            text:
              _this.l === "En"
                ? "Paied successfully, but failed to update order status, please contact the service"
                : "付款成功，送货单状态更新失败，请联系客服",
            callback() {
              if (successCallback && typeof successCallback === "function") {
                successCallback();
              }
            },
          });
        })
        .always(() => {
          _this.wait(false);
        });
    },
    ...mapActions(["alert", "wait"]),
  },
};