Asp.net程序优化js、css实现合并与压缩的方法

                        if (type.Equals("js"))
                        {
                            content = JavaScriptCompressor.Compress(content);
                        }
                        else if (type.Equals("css"))
                        {
                            content = CssCompressor.Compress(content);
                        }
                    }

                    //输入到客户端还可以进行Gzip压缩 ,这里就省略了

                    cacheItem = new CompressCacheItem() { Type = type, Content = content, Expires = DateTime.Now.AddDays(30) };
                    HttpRuntime.Cache.Insert(cachekey, cacheItem, null, cacheItem.Expires, TimeSpan.Zero);
                }

                string ifModifiedSince = request.Headers["If-Modified-Since"];
                if (!string.IsNullOrEmpty(ifModifiedSince)
                    && TimeSpan.FromTicks(cacheItem.Expires.Ticks - DateTime.Parse(ifModifiedSince).Ticks).Seconds < 0)
                {
                    response.StatusCode = (int)System.Net.HttpStatusCode.NotModified;
                    response.StatusDescription = "Not Modified";