Vue公众号配置微信授权，路由采用history模式

created() {
  let vm = this;
  /**如果扫码进入，后端会在地址传openid;
   * */
  if (this.$route.query.openid !== "" || Cookies.get('SESSION')) {
    return
  }
  let code=this.getUrlKey("code");
  if (!code) {
    this.getCodeApi("123");
  } else {
/*调取接口查看是否登录*/
    userLogin({code:code}).then((res) => {
      window.localStorage.setItem("loginState", '1');
    }).catch((err)=> {
      /*说明没登录*/
      window.localStorage.setItem("loginState", '0');
      vm.$_toast(err.message)
    })
  }
}
getUrlKey(name){// 获取url 参数
  return decodeURIComponent((new RegExp('[?|&]'+name+'='+'([^&;]+?)(&|#|;|$)').exec(location.href)||[,""])[1].replace(/\+/g,'%20'))||null;
}
getCodeApi(state){// 获取code
  let urlNow=window.location.href;
  let scope='snsapi_base';    // snsapi_userinfo   //静默授权 用户无感知
  let appid=appId;
  let url=`https://open.weixin.qq.com/connect/oauth2/authorize?appid=${appid}&redirect_uri=${urlNow}&response_type=code&scope=${scope}&state=${state}#wechat_redirect`;
  window.location.replace(url);
}