C# .net core 获取客户端IP地址

 Startup 文件 注册服务 

 public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
}

获取IP地址

private readonly IHttpContextAccessor _httpContextAccessor;

public HomeController(IHttpContextAccessor httpContextAccessor){
　　_httpContextAccessor = httpContextAccessor;  
}

public object get(){
　　return _httpContextAccessor.HttpContext.Connection.RemoteIpAddress.MapToIPv4().ToString();
}