使用 jQuery's beforeSend 回调方法添加 HTTP header with the authentication information:http://api.jquery.com/jQuery.ajax/
beforeSend:function(xhr){ xhr.setRequestHeader ("Authorization","Basic XXXXXX");},
$.ajax({
url: url,type: 'GET',dataType: 'text',beforeSend: function (xhr) {
xhr.setRequestHeader ("Authorization","Basic MzQ2NTUyNTYxQHFxLmNvbToxMjM0cXdl");
},
