.net core 利用方法过滤器添加浏览记录

最新推荐文章于 2024-08-13 01:36:46 发布

原创最新推荐文章于 2024-08-13 01:36:46 发布 · 291 阅读

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本文探讨如何在ASP.NET Core程序的Main方法中，正确注入并保存Startup中的接口，以便在过滤器中高效调用，避免页面加载延迟和503问题。

获取Startup中注入的接口，在Program里Main的时候赋值上，后面在过滤器直接调用。

public class Program
    {
        public static IBrowseRecordsService _IBrowseRecordsService { get; set; }

        public static IBrowseRecordsService BuildBrowseRecordsService()
        {
            IWebHost host = Microsoft.AspNetCore.WebHost.CreateDefaultBuilder(null)
                .ConfigureAppConfiguration(config =>
                {
                    config.AddJsonFile("appsettings.json"); 
                })

                .UseStartup<Startup>()
                .Build();

            IServiceScope scope = host.Services.CreateScope();
            IBrowseRecordsService _IBrowseRecordsService = scope.ServiceProvider.GetService<IBrowseRecordsService>();

            return _IBrowseRecordsService;
        }

        


        public static void Main(string[] args)
        {
            _IBrowseRecordsService = BuildBrowseRecordsService();
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }

过滤器：

/// <summary>
    /// 浏览记录
    /// </summary>
    public class BrowseRecordsAttribute : ActionFilterAttribute
    {
        public string title { get; set; }
        public BrowseRecordsAttribute(string _title)
        {
            title = _title;
        }

        public override void OnActionExecuted(ActionExecutedContext context)
        {
            //base.OnActionExecuted(context);

            var RequestPath = context.HttpContext.Request.Path;
            var UserID = context.HttpContext.Request.Cookies["id"].ToString().DecryptString();
            var UserName = context.HttpContext.Request.Cookies["username"].ToString().DecryptString();
            var RequestRemoteIp = (context.HttpContext.Request.HttpContext.Connection.RemoteIpAddress.MapToIPv4().ToString() + ":" + context.HttpContext.Request.HttpContext.Connection.RemotePort);
            var ResponseStatusCode = context.HttpContext.Response.StatusCode == 200 ? true : false;

            IBrowseRecordsService _IBrowseRecordsService = Program._IBrowseRecordsService;
            _IBrowseRecordsService.Insert(title, RequestPath, UserID, UserName, RequestRemoteIp, ResponseStatusCode);
        }
    }

[BrowseRecordsAttribute("XX管理")]
        public IActionResult Index()
        {
            return View();
        }

PS：当时在过滤器中每次执行一次就调用下面方法来获取接口，页面会先死一次，再加载出来，很恶心，偶尔还会503

IWebHost host = Microsoft.AspNetCore.WebHost.CreateDefaultBuilder(null)
                .ConfigureAppConfiguration(config =>
                {
                    config.AddJsonFile("appsettings.json");     //从json.json中读取配置文件 通过配置读取 参数为null下面一句要注释了
                    //config.AddCommandLine(args);         //从命令行中读取配置文件
                })

                .UseStartup<Startup>()
                .Build();

            IServiceScope scope = host.Services.CreateScope();
            IBrowseRecordsService _IBrowseRecordsService = scope.ServiceProvider.GetService<IBrowseRecordsService>();