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在C#中,我們可以使用ASP.NET Core的中間件來(lái)管理會(huì)話超時(shí)。這里是一個(gè)簡(jiǎn)單的示例,展示了如何創(chuàng)建一個(gè)自定義中間件來(lái)處理會(huì)話超時(shí):
dotnet add package Microsoft.AspNetCore.Session
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
namespace SessionTimeoutDemo
{
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
// 添加會(huì)話服務(wù)
services.AddSession(options =>
{
options.IdleTimeout = TimeSpan.FromMinutes(30); // 設(shè)置會(huì)話超時(shí)時(shí)間為30分鐘
options.Cookie.HttpOnly = true;
options.Cookie.IsEssential = true;
});
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseHttpsRedirection();
// 使用會(huì)話中間件
app.UseSession();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
}
using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
namespace SessionTimeoutDemo.Middleware
{
public class SessionTimeoutMiddleware
{
private readonly RequestDelegate _next;
public SessionTimeoutMiddleware(RequestDelegate next)
{
_next = next;
}
public async Task InvokeAsync(HttpContext context)
{
// 檢查會(huì)話是否存在
if (context.Session.Keys.Contains("LastAccessTime"))
{
var lastAccessTime = DateTime.Parse(context.Session.GetString("LastAccessTime"));
var currentTime = DateTime.Now;
// 計(jì)算會(huì)話超時(shí)時(shí)間
var timeout = currentTime - lastAccessTime;
// 如果會(huì)話超時(shí),則清除會(huì)話并重定向到登錄頁(yè)面
if (timeout.TotalMinutes > 30)
{
context.Session.Clear();
context.Response.Redirect("/Account/Login");
return;
}
// 更新最后訪問(wèn)時(shí)間
context.Session.SetString("LastAccessTime", currentTime.ToString());
}
await _next(context);
}
}
}
using SessionTimeoutDemo.Middleware;
// ...
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
// ...
// 使用自定義會(huì)話超時(shí)中間件
app.UseMiddleware<SessionTimeoutMiddleware>();
// ...
}
現(xiàn)在,當(dāng)會(huì)話超過(guò)30分鐘沒(méi)有活動(dòng)時(shí),系統(tǒng)將自動(dòng)清除會(huì)話并重定向到登錄頁(yè)面。你可以根據(jù)需要調(diào)整超時(shí)時(shí)間。
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