微信小程序与webview交互实现支付功能

<script type="text/javascript" src="//res.wx.qq.com/open/js/jweixin-1.3.2.js"></script>

<!--webview中(小程序page)-->

//pages/lnyc2019/index.wxml

 <web-view class='page_web' src="{{url}}"></web-view>

 

//pages/lnyc2019/index.js

Page({ 

　　data: { 

　　　　url:'https://xxxxxxxx/wxmini/index.html'//h5地址 

　　} 

})

<!--wxPay中(小程序page)-->

// pages/wxPay/index.js

Page({

 data: {

  payTempcode:'',

  ordercode:'',

  payParam:{}

 },

 onLoad: function (options) {

  console.log('支付开始');

  console.log(options);

  this.setData({

   ordercode: options.ordercode

  });

  this.getTempcode();

 },

 // 换取支付临时code

 getTempcode:function(){

  wx.login({

   success: res => {

    // 发送 res.code 到后台换取 openId, sessionKey, unionId

    this.setData({

     payTempcode:res.code

    });

    console.log('支付code:', this.data.payTempcode);

 

    this.getPayinfo();

   }

  })

 },

 // 换取支付参数

 getPayinfo:function(){

  var self=this;

  wx.request({

   url: 'https://xxxxxx/pay/xcxpay',//后台接口地址

   data: {

    'wxcode': self.data.payTempcode,

    'ordercode': self.data.ordercode,

    'gid': x,

   },

   method: 'POST',

   success: function (res) {

    console.log(res.data.data.payinfo);

    self.setData({

     payParam: res.data.data.payinfo

    });

    console.log('支付的订单====',self.data.ordercode);

    // 调起支付

    wx.requestPayment({

     'timeStamp': self.data.payParam.time,//为字符串，否则报错

     'nonceStr': self.data.payParam.nonce_str,

     'package': `prepay_id=${self.data.payParam.prepay_id}`,

     'signType': 'MD5',

     'paySign': self.data.payParam.paysign,

     'success': function (res) {

      console.log(res)

      console.log('=======支付成功==========');

      wx.navigateTo({

       url: `/pages/lnyc2019/detail?ordercode=${self.data.ordercode}`

      })

     },

     'fail': function (res) {

      console.log(res)

      console.log('=======支付失败==========')

      wx.navigateBack({

       delta: 1//返回1个页面

      })

     }

    })

   }

  })

 }
})