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public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
                    // 添加错误处理
    app.UseExceptionHandler(a => a.Run(async context =>
    {
                    var feature = context.Features.Get<Microsoft.AspNetCore.Diagnostics.IExceptionHandlerPathFeature>();
                    var ext = feature.Error;
        DCSoft.DCMiddleWareForWebServerLog.LogError(context, ext);// 记录错误
                    byte[] bs = System.Text.Encoding.UTF8.GetBytes("<pre>" + ext.ToString() + "</pre>");
        context.Response.StatusCode = 500;
        context.Response.ContentType = "text/html;charset=utf-8";
                    await context.Response.Body.WriteAsync(bs, 0, bs.Length);
    }));
    app.UseHsts();
    app.UseHttpsRedirection();
    app.UseStaticFiles();
    app.UseCookiePolicy();
    app.UseSession();
    app.UseRouting();

    app.UseAuthorization();
                    // 添加操作中间件
    app.UseMiddleware<DCSoft.DCMiddleWareForWebServerLog>(System.IO.Path.Combine(env.WebRootPath, "LogFiles"));
    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllerRoute(
            name: "default",
            pattern: "{controller=DCWriterDemo}/{action=Index}/{id?}");
    });
}

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public class Global : System.Web.HttpApplication
{
                    protected void Application_Start(object sender, EventArgs e)
    {
                    // 设置数据文件保存路径,将在该目录下创建类似dcsoft_serverlog_20200601.dat数据文件
                    // 每天一个文件。这个文件可以用于在线分析，也可以复制到他处进行离线分析。
        DCSoft.DCWebServerLog.StartSpecifyWorkDirectory(this.Server.MapPath("."));
    }
                    protected void Application_BeginRequest(object sender, EventArgs e)
    {
                    // 开始记录一次请求
        DCSoft.DCWebServerLog.BeginRequest(
                    this.Request,
                    this.Request.RawUrl,
                    this.Request.ContentLength);
    }
                    protected void Application_EndRequest(object sender, EventArgs e)
    {
                    // 结束一次记录
        DCSoft.DCWebServerLog.EndRequest(this.Request, 0);
    }
                    protected void Application_Error(object sender, EventArgs e)
    {
                    // 记录一次错误信息
        DCSoft.DCWebServerLog.SetErrorMessage(this.Request, this.Server.GetLastError());
    }
                    protected void Session_Start(object sender, EventArgs e)
    {
                    // 开始创建一个客户端连接信息，累计ASP.NET并发数
        DCSoft.DCWebServerLog.SessionStart(
                    this.Session.SessionID,
                    this.Session.Timeout);
    }
                    protected void Session_End(object sender, EventArgs e)
    {
                    // 结束一个客户端连接信息，更新ASP.NET并发数。
        DCSoft.DCWebServerLog.SessionEnd(this.Session.SessionID);
    }
}