wxminipay/pages/zf/index.wxml

<view class="fadeIn" wx:if="{{sandpay=='fail'}}">
        <view class="weui-mask"></view>
        <view class="weui-dialog">
            <view class="weui-dialog__hd"><strong class="weui-dialog__title">支付失败请选择</strong></view>
            <!-- <view class="weui-dialog__bd">弹窗内容，告知当前状态、信息和解决方法，描述文字尽量控制在三行内</view> -->
            <view class="weui-dialog__ft" >
                <a class="weui-dialog__btn weui-dialog__btn_default"  wx:if="{{msg == '9999'}}" bindtap="composeAndPay">继续支付</a>
                <a class="weui-dialog__btn weui-dialog__btn_primary "  wx:if="{{back}}">
                <!-- <button  class='btn' open-type="launchApp"  app-parameter="{{msg}}" binderror="launchAppError"></button> -->
                <button  class='btn' open-type="launchApp" app-parameter="{{wechatData.redirectUrl}}" binderror="launchAppError">返回APP</button>
                 <!-- <navigator open-type="exit" target="miniProgram">
                 <button  class='btn' open-type="launchApp"  app-parameter="{{msg}}" binderror="launchAppError">关闭</button></navigator> -->
                 </a>
            </view>
        </view>
</view>
  <view class="fadeIn" wx:if="{{sandpay=='success'}}">
        <view class="weui-mask"></view>
        <view class="weui-dialog">
            <view class="weui-dialog__bd">支付成功</view>
            <view class="weui-dialog__ft" wx:if="{{back}}">
                <a class="weui-dialog__btn weui-dialog__btn_primary"  >
                <!-- <button  class='btn' open-type="launchApp"  app-parameter="{{msg}}" binderror="launchAppError"></button>           -->
                <!-- <navigator open-type="exit" target="miniProgram"> <button  class='btn' open-type="launchApp"  app-parameter="{{msg}}" binderror="launchAppError">关闭</button> </navigator>               -->
                <button  class='btn' open-type="launchApp" app-parameter="{{wechatData.redirectUrl}}" binderror="launchAppError">返回APP</button>
                </a>
            </view>
        </view>
    </view>