你还在为浏览器缓存而困扰么，快来看吧
1 /// <summary> 2 /// Auto versioning of custom static files. 3 /// </summary> 4 public static class HtmlHelperExtension 5 { 6 public static MvcHtmlString IncludeVersionedJs(this HtmlHelper helper, string filename) 7 { 8 string version = GetVersion(helper, filename); 9 return MvcHtmlString.Create("<script type='text/javascript' src='" + filename + version + "'></script>"); 10 } 11 12 public static MvcHtmlString IncludeVersionedCss(this HtmlHelper helper, string filename) 13 { 14 string version = GetVersion(helper, filename); 15 return MvcHtmlString.Create("<link rel='stylesheet' href='" + filename + version + "'/>"); 16 } 17 18 static string GetVersion(this HtmlHelper helper, string filename) 19 { 20 var context = helper.ViewContext.RequestContext.HttpContext; 21 22 if (context.Cache[filename] == null) 23 { 24 var physicalPath = context.Server.MapPath(filename); 25 var version = "?v=" + new System.IO.FileInfo(physicalPath).LastWriteTime.ToString("yyyyMMddHHmmss"); 26 context.Cache.Add(physicalPath, version, null, DateTime.UtcNow.AddSeconds(60), System.Web.Caching.Cache.NoSlidingExpiration, CacheItemPriority.Default, null); 27 context.Cache[filename] = version; 28 return version; 29 } 30 else 31 { 32 return context.Cache[filename] as string; 33 } 34 } 35 36 public static string GetFileWithVersion(this HtmlHelper helper, string filename) 37 { 38 return filename + GetVersion(helper, filename); 39 } 40 }
