一、自定义图片输出，启用客户端的图片缓存处理

代码示例：

string path = Request.Url.LocalPath;                if (path != null)                {                    path = path.ToLower();                    if (path.Contains("uploadfiles") || path.Contains("ueditor/net/upload"))                    {                        path = Server.MapPath(path).Replace("LiuXue.Mobile", "LiuXue.Web");                        //输出主站内容                        if (File.Exists(path))                        {                            //自定义缓存处理                            Response.ContentType = "image/jpeg";                            Response.Headers["Cache-Control"] = "public"; //指定客户端，服务器都处理缓存                            int length = path.LastIndexOf(".") - path.LastIndexOf("/") - 1;                            Response.Headers["Etag"] = path.Substring(path.LastIndexOf("/") + 1, length);                            Response.Headers["Last-Modified"] = new DateTime(2018).ToString("r");                            Response.Headers["Content-Length"] = new FileInfo(path).Length.ToString();                            Response.Headers["Accept-Ranges"] = "bytes";                            Response.TransmitFile(path);                            Response.End();                        }                    }                }

 

 

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