第一次添加

Microsoft.AspNetCore.Http
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

在Startup.cs中的ConfigureServices中 然后在控制器中添加以下代码

   private IHttpContextAccessor _accessor;
    
  public LoginController(IHttpContextAccessor accessor)
            {
              _accessor = accessor;
            }

  public IEnumerable<string> Get()
        {
         var ip = _accessor.HttpContext?.Connection?.RemoteIpAddress?.ToString();
         return new string[] { ip, "value" };
        }

希望这对你有用

第一次添加

Microsoft.AspNetCore.Http
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

在Startup.cs中的ConfigureServices中 然后在控制器中添加以下代码

   private IHttpContextAccessor _accessor;
    
  public LoginController(IHttpContextAccessor accessor)
            {
              _accessor = accessor;
            }

  public IEnumerable<string> Get()
        {
         var ip = _accessor.HttpContext?.Connection?.RemoteIpAddress?.ToString();
         return new string[] { ip, "value" };
        }

希望这对你有用

运行ASP。在Ubuntu上的Traefik反向代理后面的NET Core 2.1，我需要在安装官方的Microsoft.AspNetCore.HttpOverrides包后在knownproxy中设置它的网关IP

        var forwardedOptions = new ForwardedHeadersOptions {
            ForwardedHeaders = ForwardedHeaders.XForwardedFor,
        };
        forwardedOptions.KnownProxies.Add(IPAddress.Parse("192.168.3.1"));
        app.UseForwardedHeaders(forwardedOptions);

根据文档，如果反向代理没有在本地主机上运行，这是必需的。docker-compose。Traefik . yml已分配静态IP地址:

networks:
  my-docker-network:
    ipv4_address: 192.168.3.2

或者，它应该足以确保在这里定义了一个已知的网络，并在. net Core中指定其网关。

我发现，你们中的一些人发现你们得到的IP地址是:::1或0.0.0.1

这是一个问题，因为你试图从你自己的机器获取IP，而c#试图返回IPv6的混乱。

所以，我实现了来自@Johna (https://stackoverflow.com/a/41335701/812720)和@David (https://stackoverflow.com/a/8597351/812720)的答案，感谢他们!

下面是解决方案:

add Microsoft.AspNetCore.HttpOverrides Package in your References (Dependencies/Packages) add this line in Startup.cs public void Configure(IApplicationBuilder app, IHostingEnvironment env) { // your current code // start code to add // to get ip address app.UseForwardedHeaders(new ForwardedHeadersOptions { ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto }); // end code to add } to get IPAddress, use this code in any of your Controller.cs IPAddress remoteIpAddress = Request.HttpContext.Connection.RemoteIpAddress; string result = ""; if (remoteIpAddress != null) { // If we got an IPV6 address, then we need to ask the network for the IPV4 address // This usually only happens when the browser is on the same machine as the server. if (remoteIpAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6) { remoteIpAddress = System.Net.Dns.GetHostEntry(remoteIpAddress).AddressList .First(x => x.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork); } result = remoteIpAddress.ToString(); }

现在你可以从remoteIpAddress或result获取IPv4地址

这适用于我(DotNetCore 2.1)

[HttpGet]
public string Get() 
{
    var remoteIpAddress = HttpContext.Connection.RemoteIpAddress;
    return remoteIpAddress.ToString();
}

从这个环节，就有了更好的解决方案。

在Startup.cs中，我们需要添加service-

public void ConfigureServices(IServiceCollection services)
{
    ........
    services.AddHttpContextAccessor();
    ........
}

然后在任何控制器或任何地方，我们都需要像这样通过依赖注入来使用它

private IHttpContextAccessor HttpContextAccessor { get; }

public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options, IWebHostEnvironment env, IHttpContextAccessor httpContextAccessor)
        : base(options)
{
    Environment = env;
    HttpContextAccessor = httpContextAccessor;
    //this.Database.EnsureCreated();
}

然后得到这样的IP

IPAddress userIp = HttpContextAccessor.HttpContext.Connection.RemoteIpAddress;