承载网页的容器页面

wxml

<view class="container">
  <web-view src="{{banner_url}}"></web-view>
</view>

js

  onShareAppMessage: function (options) {
    var that = this
    var return_url =options.webViewUrl    
    var path = 'pages/action/action?banner_url=' + return_url  //需要转发的当前页面的路径
    return {
      title: that.data.title,
      path: path,
      success: function (res) {
        that.web_url = return_url
        // 转发成功
        wx.showToast({
          title: "转发成功",
          icon: 'success',
          duration: 2000
        })
      },
      fail: function (res) {
        // 转发失败
      }
    }
  }