ajax添加token

//所有请求携带token
$(document).ajaxSend(function(event,xhr){
    xhr.setRequestHeader('token',sessionStorage.getItem('token'))
})

//所有请求监听并更新token
$(document).ajaxSuccess(function(event,xhr){
    console.log(xhr.getResponseHeader("Authentication"))
    if(xhr.getResponseHeader("Authentication")){
        sessionStorage.setItem('token', xhr.getResponseHeader("Authentication"));
    }
})