如何关闭由 ASP.NET 核心框架完成的日志(log)记录

如何关闭ASP.NET for each 请求所做的日志(log)记录，例如

信息09:38:41用户配置文件可用.使用"C:\Users\xxxx xxxx\AppData\Local\ASP".NET\DataProtection Keys'作为密钥存储库，Windows DPAPI用于加密静态密钥

我还不知道如何关闭这个登录...

这是我在Startup类中的Configure方法:

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    loggerFactory.AddProvider(new Log4NetProvider());

    if (env.IsDevelopment())
    {
        app.UseBrowserLink();
        app.UseDeveloperExceptionPage();
        app.UseDatabaseErrorPage();
    }
    else
    {
        app.UseExceptionHandler("/Home/Error");

        // For more details on creating database during deployment see http://go.microsoft.com/fwlink/?LinkID=615859
        try
        {
            using (var serviceScope = app.ApplicationServices.GetRequiredService<IServiceScopeFactory>()
                .CreateScope())
            {
                serviceScope.ServiceProvider.GetService<ApplicationDbContext>()
                     .Database.Migrate();
            }
        }
        catch { }
    }

    app.UseIISPlatformHandler(options => options.AuthenticationDescriptions.Clear());

    app.UseStaticFiles();

    app.UseIdentity();

    // To configure external authentication please see http://go.microsoft.com/fwlink/?LinkID=532715

    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}

这是我的项目.json文件:

"dependencies": {
  "EntityFramework.Commands": "7.0.0-rc1-final",
  "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
  "log4net": "2.0.5",
  "Microsoft.AspNet.Authentication.Cookies": "1.0.0-rc1-final",
  "Microsoft.AspNet.Diagnostics.Entity": "7.0.0-rc1-final",
  "Microsoft.AspNet.Identity.EntityFramework": "3.0.0-rc1-final",
  "Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
  "Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
  "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final",
  "Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
  "Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final",
  "Microsoft.AspNet.Tooling.Razor": "1.0.0-rc1-final",
  "Microsoft.Extensions.CodeGenerators.Mvc": "1.0.0-rc1-final",
  "Microsoft.Extensions.Configuration.FileProviderExtensions": "1.0.0-rc1-final",
  "Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final",
  "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-rc1-final",
  "Microsoft.Extensions.Logging": "1.0.0-rc1-final",
  "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0-rc1-final"
},

"commands": {
  "web": "Microsoft.AspNet.Server.Kestrel",
  "ef": "EntityFramework.Commands"
},

"frameworks": {
  "dnx451": { }
},

Update: