AcaMate_Web/App.razor.cs

using System.Net;
using System.Net.Http.Json;
using Microsoft.AspNetCore.Components;
using Microsoft.JSInterop;

namespace Front;

public partial class App : ComponentBase
{
    [Inject] HttpClient Http { get; set; } = default!;
    [Inject] IJSRuntime JS { get; set; } = default!;
    
    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            // Web_AM_Connect_Key 쿠키를 가져오는 JavaScript 함수를 호출합니다.
            var header = await JS.InvokeAsync<string>("blazorGetCookie", "Web_AM_Connect_Key");

            // 값 없으면 API 호출
            if (string.IsNullOrEmpty(header))
            {
                var response = await Http.GetFromJsonAsync<ApiResult>("/api/v1/in/app?type=W&specific=Web_Connect&project=AcaMate");
                Console.WriteLine($"COOKIE: {response.header}");
                if (!string.IsNullOrEmpty(response?.header))
                {
                    Console.WriteLine($"NO?");
                    await JS.InvokeVoidAsync("blazorSetCookie", "Web_AM_Connect_Key", response.header, 1);
                }
            }
        }
    }
    public class ApiResult
    {
        public string header { get; set; }
    }
}