<web-view
    id="web-view-1"
    src="http://10.10.71.44:8080/parkstop/"
    @message="getMessage" 
  />
getMessage(e) {
      console.log("收到消息", e.detail); //根据name判断是什么消息
      let { data } = e.detail  
}
<!-----------------h5------------------------>   
wx.miniProgram.postMessage({
    data: {
        link: "//test.com",
        title: "一起学习，一起进步"
    }
});