发布：2021/7/13 16:49:47作者：管理员 来源：本站 浏览次数：1041
先来看看代码，拦截所有Http请求类。下面包含了两种类的集成 IHttpModule IHttpHandlerFactory
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace SoonnetWebSite
{
/// <summary>
/// Handler2 的摘要说明
/// </summary>
public class Handler2 : IHttpModule
{
public void Dispose()
{
}
private void Application_AcquireRequestState(Object source, EventArgs e)
{
HttpApplication httpApplication = (HttpApplication)source;
string url = httpApplication.Context.Request.Path.ToLower();
string imgPhysicalPath = httpApplication.Request.Url.ToString();
if (imgPhysicalPath.ToLower().IndexOf("https") != 0 && imgPhysicalPath.IndexOf("Video/VideoUpload.aspx") == -1 && imgPhysicalPath.IndexOf("Photo/PhotoUpload.aspx") == -1)
{
imgPhysicalPath = imgPhysicalPath.Replace("http", "https");
httpApplication.Response.Redirect(imgPhysicalPath);
return;
}
// httpApplication.Response.Redirect(imgPhysicalPath);
}
public void Init(HttpApplication context)
{
context.AcquireRequestState += (new EventHandler(this.Application_AcquireRequestState));
}
//public IHttpHandler GetHandler(HttpContext context, string requestType, string url, string pathTranslated)
//{
// IHttpHandler handler = null;
// string action = url.Substring(url.LastIndexOf("/", StringComparison.Ordinal) + 1);
// action = action.Substring(0, action.IndexOf(".", StringComparison.Ordinal));
// var Rurl = context.Request.RawUrl.Replace("/", ".");
// string actionClass = $"SoonnetWebSite.{Rurl}";
// if (true)
// {
// }
//}
//public void ReleaseHandler(IHttpHandler handler)
//{
// throw new NotImplementedException();
//}
}
}
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下面我们来看看IHttpHandler
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Web; namespace SoonnetWebSite { /// <summary> /// Handler1 的摘要说明 /// </summary> public class Handler1 : IHttpHandler { private const string DEFAULTIMAGE_URL = "/SGL_Images/Userlogo_Big.jpg"; public void ProcessRequest(HttpContext context) { string imgPhysicalPath = context.Request.Url.ToString(); string rawUrl = context.Request.RawUrl.ToString(); System.Drawing.Image image = null; if (File.Exists(context.Server.MapPath(rawUrl))) { //为空 image = System.Drawing.Image.FromFile(context.Server.MapPath(rawUrl)); } else { //如果图片不存在，放上默认的图片 image = System.Drawing.Image.FromFile(context.Server.MapPath(DEFAULTIMAGE_URL)); } //设置输出的类型 context.Response.ContentType = "image/jpeg"; //把图片保存到输出流里 image.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg); image.Dispose(); } public bool IsReusable { get { return false; } } } }
两端代码的配置如下
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<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1126400000" />
</requestFiltering>
</security>
<validation validateIntegratedModeConfiguration="false" />
<handlers>
<add name="IHttpHandler" verb="GET,POST" path="LokARX.cc" type="SoonnetWebSite.Web_Data.Lok_ARequestX, SoonnetWebSite" />
<add name="IHttpHandler2" verb="GET" path="LokIF.cc" type="SoonnetWebSite.Web_Data.Lok_Interface, SoonnetWebSite" />
<add name="Handler1" verb="*" path="*.jpg" type="SoonnetWebSite.Handler1, SoonnetWebSite" />
</handlers>
<modules>
<add name="Handler2" type="SoonnetWebSite.Handler2,SoonnetWebSite" />
</modules>
</system.webServer>
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发现个问题， IIS 配置的跟本机测试的节点不一样。线上的配置要用
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<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1126400000" />
</requestFiltering>
</security>
<validation validateIntegratedModeConfiguration="false" />
<HttpHandlers>
<add name="IHttpHandler" verb="GET,POST" path="LokARX.cc" type="SoonnetWebSite.Web_Data.Lok_ARequestX, SoonnetWebSite" />
<add name="IHttpHandler2" verb="GET" path="LokIF.cc" type="SoonnetWebSite.Web_Data.Lok_Interface, SoonnetWebSite" />
<add name="Handler1" verb="*" path="*.jpg" type="SoonnetWebSite.Handler1, SoonnetWebSite" />
</HttpHandlers>
<HttpModules>
<add name="Handler2" type="SoonnetWebSite.Handler2,SoonnetWebSite" />
</HttpModules>
</system.webServer>
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前面配置多了一个http
是因为IIS 的经典模式跟集成模式的关系，
参考链接：https://blog.csdn.net/hongwei_23/article/details/44300923
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