axios

拦截器

// axios 拦截器
axios.interceptors.request.use(
    (config) => {
        if (store.state.token) { // 判断是否存在token，如果存在的话，则每个http header都加上token
            config.headers['user-token'] = store.state.token;
        } else if (window.sessionStorage.getItem('token')) {
            store.commit('SET_TOKEN', window.sessionStorage.getItem('token'))
            config.headers['user-token'] = window.sessionStorage.getItem('token')
        } else {
            router.replace({
                //path: '/login'
            })
        }
        return config;
    },
    err => {
        return Promise.reject(err);
    });

axios.interceptors.response.use(
    response => {
        if (response.status != 200) {
            return Promise.reject("err state:" + response.status) // 返回接口返回的错误信息
        }
        if (response.data.status == 0) {
            store.commit('CLEAR_TOKEN');
            store.commit('CLEAR_USERINFO')
            router.replace({
                path: '/login'
            })
        }
        return response;
    },
    error => {
        if (error.response) {
            switch (error.response.status) {
                case 401:
                    // 返回 401 清除token信息并跳转到登录页面
                    store.commit('CLEAR_TOKEN');
                    router.replace({
                        path: '/login'
                    })
            }
            return Promise.reject(error.response.data)
        }
        return Promise.reject(error) // 返回接口返回的错误信息
    });

取消请求

var CancelToken = axios.CancelToken;
var source = CancelToken.source();

axios.get(url, {
    cancelToken: source.token
}).catch(function (thrown) {
    if (axios.isCancel(thrown)) {
        console.log('Request canceled', thrown.message);
    } else {
        //handle error
    }
});

//取消请求（信息的参数可以设置的）
source.cancel("操作被用户取消");