ajax 错误编码解决403

"Invalid CSRF Token ‘null’ was found on the request parameter ‘_csrf’ or header ‘X-CSRF-TOKEN’."

<meta name="_csrf_parameter" content="_csrf" />
<meta name="_csrf_header" content="X-CSRF-TOKEN" />
<meta name="_csrf" content="e62835df-f1a0-49ea-bce7-bf96f998119c" />

js

	var header = $("meta[name='_csrf_header']").attr("content");
	var token = $("meta[name='_csrf']").attr("content");

ajax在success之前机上beforeSend

	beforeSend : function(xhr) {
					xhr.setRequestHeader(header, token);
				},
				success : function(data) {
					maxItems = data.length;
					// 重置加载flag
					loading = false;

					if (index == 1) {
						$('.infinite-scroll-bottom .list-container').html('');
					}
					index = index + 1;
					//预先加载10条
					for (var i = lastIndex + 1; i <= lastIndex + number; i++) {
						var html = addItems(data[i]);
					}
				}