使用Vue如何实现拦截器对token处理方法有哪些？

Vue.http.interceptors.push(function (request, next) {//拦截器设置请求token

 // sessionStorage.getItem("tokenUrl");
 request.headers.set('token', sessionStorage.getItem("tokenVal"));
 if (request.url.indexOf(url) === -1) {
 request.url = url + request.url;
 }
 // continue to next interceptor
 next(function (response) {
 // ..if(response.body.code=="失败码")
{
parent.location.href="登录页面路径" rel="external nofollow" ;
}.
 // 请求发送后的处理逻辑
 // ...
 // 根据请求的状态，response参数会返回给successCallback或errorCallback
 return response
 });
});