通过http上下文判断是否是Ajax请求
程序员文章站
2022-10-18 13:00:38
一直不清楚服务端是如何判断一个请求是否是ajax请求,通过ILSpy查看,才得知是通过判断请求头是否存在 X-Requested-With:XMLHttpRequest 来判断是否是ajax请求。 ......
using System; namespace System.Web.Mvc { /// <summary>Represents a class that extends the <see cref="T:System.Web.HttpRequestBase" /> class by adding the ability to determine whether an HTTP request is an AJAX request.</summary> public static class AjaxRequestExtensions { /// <summary>Determines whether the specified HTTP request is an AJAX request.</summary> /// <returns>true if the specified HTTP request is an AJAX request; otherwise, false.</returns> /// <param name="request">The HTTP request.</param> /// <exception cref="T:System.ArgumentNullException">The <paramref name="request" /> parameter is null (Nothing in Visual Basic).</exception> public static bool IsAjaxRequest(this HttpRequestBase request) { if (request == null) { throw new ArgumentNullException("request"); } return request["X-Requested-With"] == "XMLHttpRequest" || (request.Headers != null && request.Headers["X-Requested-With"] == "XMLHttpRequest"); } } }
一直不清楚服务端是如何判断一个请求是否是ajax请求,通过ILSpy查看,才得知是通过判断请求头是否存在
X-Requested-With:XMLHttpRequest 来判断是否是ajax请求。
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