Global.asax或IHttpModule实现屏蔽ip和图片防盗链

Global.asax实现屏蔽ip和图片防盗链

   
     

    
       
    
      protected
    
       
    
      void
    
       Application_BeginRequest(
    
      object
    
       sender, EventArgs e)
 {
 
    
      //
    
      屏蔽ip
 
    
      //
    
      if (HttpContext.Current.Request.UserHostAddress == "127.0.0.1")
 
    
      //
    
      {
 
    
      //
    
       HttpContext.Current.Response.Write("你已被屏蔽");
 
    
      //
    
       HttpContext.Current.Response.End();
 
    
      //
    
      }
 
    
      //
    
      图片防盗链，只要是图片请求，并且请求地址不是本服务器都将图片换位下面的盗链图片
    
      

    
       
    
      if
    
       (HttpContext.Current.Request.Url.AbsolutePath.EndsWith(
    
      "
    
      .jpg
    
      "
    
      ) 
    
      &&
    
       HttpContext.Current.Request.UrlReferrer.Host 
    
      !=
    
       
    
      "
    
      localhost:2535
    
      "
    
      )
 {
 HttpContext.Current.Response.WriteFile(HttpContext.Current.Server.MapPath(
    
      "
    
      ~/imgs/%D7%EE%D6%D5%BB%C3%CF%EB%A2%F7-%CA%A5%CD%AF%BD%B5%C1%D920080427084745.jpg
    
      "
    
      ));
 }
 }