Global.asax.cs中相关方法

        protected void Session_Start(object sender, EventArgs e)
        {
#if DEBUG
            //debug 登陆默认设置
#endif
        }

        protected void Application_BeginRequest(object sender, EventArgs e)
        {

        }

        protected void Application_End(object sender, EventArgs e)
        {
            Brotli.Brolib.FreeLibrary();
        }

        protected void Application_Error(object sender, EventArgs e)
        {
            //错误日志记录
        }

       protected void AddCompressSupport(HttpContext context)
        {
            Boolean doCompress = true;
            String compressMode = System.Web.Configuration.WebConfigurationManager.AppSettings["CompressMode"];
            if (!String.IsNullOrEmpty(compressMode))
            {
                Boolean.TryParse(compressMode, out doCompress);
            }
            //don't use compress for filehandler
            if (context.Request.Url.AbsoluteUri.Contains("FileHandler.ashx")) return;
            if (context.Response.ContentType.IndexOf("json", StringComparison.CurrentCultureIgnoreCase) >= 0
                || (context.Handler is System.Web.SessionState.IRequiresSessionState)
                )
            {
                context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
                context.Response.Cache.SetMaxAge(TimeSpan.Zero);
                context.Response.Cache.SetExpires(new DateTime(2000, 1, 1));
            }

            if (doCompress)
            {
                var app = context.ApplicationInstance;
                String acceptEncodings = app.Request.Headers.Get("Accept-Encoding");

                if (!String.IsNullOrEmpty(acceptEncodings))
                {
                    System.IO.Stream baseStream = app.Response.Filter;
                    acceptEncodings = acceptEncodings.ToLower();

                    if (acceptEncodings.Contains("br") || acceptEncodings.Contains("brotli"))
                    {
                        app.Response.Filter = new Brotli.BrotliStream(baseStream, System.IO.Compression.CompressionMode.Compress);
                        app.Response.AppendHeader("Content-Encoding", "br");
                    }
                    else
                    if (acceptEncodings.Contains("deflate"))
                    {
                        app.Response.Filter = new System.IO.Compression.DeflateStream(baseStream, System.IO.Compression.CompressionMode.Compress);
                        app.Response.AppendHeader("Content-Encoding", "deflate");
                    }
                    else if (acceptEncodings.Contains("gzip"))
                    {
                        app.Response.Filter = new System.IO.Compression.GZipStream(baseStream, System.IO.Compression.CompressionMode.Compress);
                        app.Response.AppendHeader("Content-Encoding", "gzip");
                    }

                }
            }
        }

        protected void Application_PostAcquireRequestState(object sender, EventArgs e)
        {
            //压缩Response请求
            AddCompressSupport(Context);
        }