Добрый день!
Так как я считаюсь новичком в ASP.NET Core и не только, недавно я столкнулся с тем, когда консоль браузера выдал сетевую ошибку соединения с Mapbox JS API на главной странице веб-приложения ASP.NET, жалуясь на отсутствие CORS
Сам шаблон приложения:
<!DOCTYPE html>
<html lang="ru">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"]</title>
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="~/css/site.css" />
<script src='https://api.mapbox.com/mapbox-gl-js/v2.3.1/mapbox-gl.js'></script>
<link href='https://api.mapbox.com/mapbox-gl-js/v2.3.1/mapbox-gl.css' rel='stylesheet' />
</head>
<body>
<header>
<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-danger mb-3">
<div class="container">
<a class="navbar-brand text-white fs-2" asp-area="" asp-page="/Index">My page</a>
<button class="navbar-toggler text-white" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-white fs-4" asp-area="" asp-page="/Index">First</a>
</li>
<li class="nav-item">
<a class="nav-link text-white fs-4" asp-area="" asp-page="#">Two</a>
</li>
<li class="nav-item">
<a class="nav-link text-white fs-4" asp-area="" asp-page="/Privacy">Three</a>
</li>
</ul>
</div>
</div>
</nav>
</header>
<div class="container">
<main role="main" class="pb-3" data-page="">
@RenderBody()
</main>
</div>
<footer class="border-top footer text-muted fs-5">
<div class="container">
© 2021
</div>
</footer>
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<script src="~/js/site.js" asp-append-version="true"></script>
@await RenderSectionAsync("Scripts", required: false)
</body>
</html>
Контроллер:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.Extensions.Logging;
using Microsoft.AspNetCore.Cors;
namespace frontend.Pages
{
[EnableCors("MyPolicy")]
public class IndexModel : PageModel
{
private readonly ILogger<IndexModel> _logger;
public IndexModel(ILogger<IndexModel> logger)
{
_logger = logger;
}
}
}
Само действие контроллера:
@page
@model IndexModel
@{
ViewData["Title"] = "Home Page";
}
<div class="container">
<div class="col" id="map"></div>
<script>
mapboxgl.accessToken = 'pk.eyJ1Ijoic2VyZWdhem9sb3RhcnlvdzY0IiwiYSI6ImNrdGNuam91cTBlOWMyb3RkMGdleWt0ZW8ifQ.Z9JHSStCgSwJhaaRoLjD9w';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11'
});
</script>
</div>
И сам Startup.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Cors;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
namespace frontend
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddRazorPages();
services.AddCors(o => o.AddPolicy("MyPolicy", builder =>
{
builder.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader();
}));
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
app.UseCors(builder => builder.AllowAnyOrigin());
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseCors("MyPolicy");
// app.UseResponseCaching();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapRazorPages();
});
}
}
}
Пролистывал документации и инструкции и ничего хорошего недало и само основание данного вопроса, с которым я обращаюсь к вам:
events.mapbox.com/events/v2?access_token=pk.eyJ1Ijoic2VyZWdhem9sb3RhcnlvdzY0IiwiYSI6ImNrdGNuam91cTBlOWMyb3RkMGdleWt0ZW8ifQ.Z9JHSStCgSwJhaaRoLjD9w:1 Failed to load resource: net::ERR_BLOCKED_BY_CLIENT
events.mapbox.com/events/v2?access_token=pk.eyJ1Ijoic2VyZWdhem9sb3RhcnlvdzY0IiwiYSI6ImNrdGNuam91cTBlOWMyb3RkMGdleWt0ZW8ifQ.Z9JHSStCgSwJhaaRoLjD9w:1 Failed to load resource: net::ERR_BLOCKED_BY_CLIENT
Как избавиться от этого? Заранее вам спасибо!
