1 /// <summary>
2 /// 管道当中的第一个事件
3 /// </summary>
4 /// <param name="sender"></param>
5 /// <param name="e"></param>
6 protected void Application_BeginRequest(object sender, EventArgs e)
7 {
8 //防盗链
9 if (Request.RawUrl.Contains("images/"))
10 {
11 if (Request.UrlReferrer==null || !IsSameDomain(Request.UrlReferrer,Request.Url))
12 {
13 Response.ContentType = "image/jpeg";
14 string path = Request.MapPath("/daplian.jpg");
15 Response.WriteFile(path);
16 Response.End();
17 }
18 }
19 }
20 /// <summary>
21 /// 判断域名是否相同
22 /// </summary>
23 /// <param name="u1"></param>
24 /// <param name="u2"></param>
25 /// <returns></returns>
26 bool IsSameDomain(Uri u1,Uri u2)
27 {
28 return Uri.Compare(u1, u2, UriComponents.HostAndPort, UriFormat.SafeUnescaped, StringComparison.CurrentCulture) == 0 ? true : false;
29 }
