To register HttpClient service in configure service to call api from web application

Question

User-1355965324 posted

I am calling the API from my web application is as given below

 public class AuthorRepositoryGUI : IAuthorRepositoryGUI
    {
        private readonly IHttpClientFactory _clientFactory;

        public AuthorRepositoryGUI(IHttpClientFactory clientFactory) 
        {
            _clientFactory = clientFactory;
        }
}


  public async Task<AuthorDto> GetAuthors()
        {
            var url = "http://localhost:2318/api/Authors/"
            AuthorDto author = new AuthorDto();
            var request = new HttpRequestMessage(HttpMethod.Get, url);
            var client = _clientFactory.CreateClient();
            HttpResponseMessage response = await client.SendAsync(request);
            if (response.StatusCode == System.Net.HttpStatusCode.OK)
            {
                var jsonString = await response.Content.ReadAsStringAsync();
                return JsonConvert.DeserializeObject<AuthorDto>(jsonString);

            }

It is working fine right now.

Is it possible  to register the HTTP client  in configure service rather than service controller and then how can use it from service controller Please  you help me with suggested code

public void ConfigureServices(IServiceCollection services)
{
     services.AddHttpClient<IAuthorRepositoryGUI, AuthorRepositoryGUI>(client =>
    {
        client.BaseAddress = new Uri("https://localhost:44379/");
    });
}

// If I create the client in configure service as given above . how can I call the API in the given repository  here
 public async Task<AuthorDto> GetAuthors()
        {
          
            var request = new HttpRequestMessage(HttpMethod.Get, url);
            var client = _clientFactory.CreateClient();
            HttpResponseMessage response = await client.SendAsync(request);
            if (response.StatusCode == System.Net.HttpStatusCode.OK)
            {
                var jsonString = await response.Content.ReadAsStringAsync();
                return JsonConvert.DeserializeObject<AuthorDto>(jsonString);

            }

             
            return author;
        }

Answer 1

User-474980206 posted

if you are registering typed clients, you inject a client, not a factory. Follow directions here

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/http-requests?view=aspnetcore-3.1