鸿蒙5.0自研应用内嵌入H5，H5内支付跳转支付

第一步：在【module.json5】设置weixin的schemes

如：

"querySchemes": [
  "weixin"
],

第二步：在web监听中添加微信mweb_url链接，并加载

if (url.startsWith('https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?prepay_id=')) {
  if (this.isSetReferer) {
    this.isSetReferer = false;
    return false;
  }
  const headers = data.getRequestHeader();
  headers.push({headerKey:'Referer',headerValue:'https://mall.xxxx.com/'})
  headers.push({headerKey:'Origin',headerValue:'https://mall.xxxx.com'})
  this.controller.loadUrl(url,headers);
  this.isSetReferer = true;
  return true;
}

第三步：监听微信跳转地址

if (url.includes('weixin://wap/pay?')){
  if (Wx.WXApi.isWXAppInstalled()){
    ToastUtil.showToast('未安装微信，请先安装')
    return false;
  }
  this.abilityContext.openLink(url).then(() => {
    Logger.p(`open link success.`);
  }).catch((err: BusinessError) => {
    Logger.p(`open link failed, errCode: ${JSON.stringify(err.code)}`);
  });;
  return true;
}