我研究了如何在 C# 中检查请求是否通过 AJAX 发送,但它似乎对我不起作用。我的代码如下。我使用一种方法在客户端对页面进行 AJAX(在我的例子中,正在使用 activeXobject)。 ajax 页面正在检查 ajax 属性服务器端的请求,但是 X-Requested-With 属性都没有返回任何内容(我在打印时得到空白)。想法?
Ajax 方法(Javascript)
/*
* Ajax page loads with url
* @param url : URL to call for ajax page load
* @param element : Element ID to be updated
*/
function ajax(url, element) {
UtilLogger.log(HtmlLogger.INFO, "-AJAX Call for " + url + " in " + element + "-");
var ajx;
if (window.HXMLHttpRequest) {
UtilLogger.log(HtmlLogger.FINE, "Using XMLHttpRequest");
ajx = new XMLHttpRequest();
}
else {
UtilLogger.log(HtmlLogger.FINE, "Using ActiveXObject");
ajx = new ActiveXObject("Microsoft.XMLHTTP");
}
ajx.open("GET", url, true);
ajx.send();
ajx.onreadystatechange = function () {
if (ajx.readyState == 4 && ajx.status == 200) {
document.getElementById(element).innerHTML = ajx.responseText;
}
else if (ajx.readyState == 4 && ajx.status == 400) {
alert("Page Error. Please refresh and try again.");
}
else if (ajx.readyState == 4 && ajx.status == 500) {
alert("Server Error. Please refresh and try again.");
}
}
UtilLogger.log(HtmlLogger.INFO, "-END AJAX Call for " + url + " in " + element + "-");
}
Ajax 登录检查(C#)
/* Checks for ajax request validity
* @param HttpResponse resp : response to redirect if not ajax request
* @param HttpRequest req : request to check for ajax
*/
public static void checkAjax(HttpResponse resp, HttpRequest req)
{
if(req == null ||
(req["X-Requested-With"] != "XMLHttpRequest" &&
(req.Headers != null && req.Headers["X-Requested-With"] != "XMLHttpRequest"))){
// resp.Redirect("./ajaxerror.aspx");
resp.Write(req["X-Requested-With"] + ":" + req.Headers["X-Requested-With"]);
}
}
最佳答案
您的客户端请求不会自动向您的服务器提供任何“X-Requested-With” header 或查询参数(但 Microsoft AJAX 等某些框架会提供)。 AJAX 调用像任何 HTTP 请求一样工作,添加一些 header :
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
关于c# - 检查 Ajax 请求,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10209382/