request.interceptors.response.use((response) => {
    return response.data
}, (error) => {
    //失败回调，处理http网络错误
    let message = ''
    let status = error.response.status
    switch (status) {
        case 401:
            message = "token过期"
            break
        case 403:
            message = "无权"
            break
        case 500:
            message = "500"
            break
        case 404:
            message = "404"
            break
    }
    ElMessage.error(message)
    return Promise.reject(error)
})