C#•2y ago

❔ Unable to resolve service type for IHttpClientFactory

I'm hitting a wall on what to do. I have two .NET 7.0 applications. One of which an API and the other a Web App. Both apps are using the same version of System.Net.Http and builder.Services.AddHttpClient() doesn't seem to do anything. This is my first project working with API's like this so I'm a little lost on what to do. I'm willing to screen share if someone wants to hop in voice.

// API Project
// Program.cs
var builder = WebApplication.CreateBuilder(args);

// Add services to the container
builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddHttpClient();

builder.Services.AddLogging();
builder.Services.AddSwaggerGen();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();
app.UseAuthorization();

app.MapControllers();
app.Run();

// API Project
// Program.cs
var builder = WebApplication.CreateBuilder(args);

// Add services to the container
builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddHttpClient();

builder.Services.AddLogging();
builder.Services.AddSwaggerGen();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();
app.UseAuthorization();

app.MapControllers();
app.Run();

4 Replies

TantrimOP•2y ago

Web App Proj

// Web App Project
// Index.cshtml.cs
public class IndexModel : PageModel
{
    private readonly ILogger<IndexModel> _logger;
    private readonly IHttpClientFactory _httpClientFactory;

    public IndexModel(ILogger<IndexModel> logger, IHttpClientFactory httpClientFactory)
    {
        _logger = logger;
        _httpClientFactory = httpClientFactory;
    }


    public async Task OnGet()
    {
        await GetAllContacts();
    }

    private async Task GetAllContacts()
    {
        var _client = _httpClientFactory.CreateClient();
        var response = await _client.GetAsync("https://localhost:44320/api/Contacts");

        List<ContactModel> contacts;

        if (response.IsSuccessStatusCode)
        {
            var options = new JsonSerializerOptions
            {
                // allows javascript and c# variables to match. Variables in javascript are camelCase and C# is PascalCase
                PropertyNameCaseInsensitive = true
            };
            string responseText = await response.Content.ReadAsStringAsync();

            contacts = JsonSerializer.Deserialize<List<ContactModel>>(responseText, options);
        }
        else
        {
            throw new Exception(response.ReasonPhrase);
        }
    }
}

// Web App Project
// Index.cshtml.cs
public class IndexModel : PageModel
{
    private readonly ILogger<IndexModel> _logger;
    private readonly IHttpClientFactory _httpClientFactory;

    public IndexModel(ILogger<IndexModel> logger, IHttpClientFactory httpClientFactory)
    {
        _logger = logger;
        _httpClientFactory = httpClientFactory;
    }


    public async Task OnGet()
    {
        await GetAllContacts();
    }

    private async Task GetAllContacts()
    {
        var _client = _httpClientFactory.CreateClient();
        var response = await _client.GetAsync("https://localhost:44320/api/Contacts");

        List<ContactModel> contacts;

        if (response.IsSuccessStatusCode)
        {
            var options = new JsonSerializerOptions
            {
                // allows javascript and c# variables to match. Variables in javascript are camelCase and C# is PascalCase
                PropertyNameCaseInsensitive = true
            };
            string responseText = await response.Content.ReadAsStringAsync();

            contacts = JsonSerializer.Deserialize<List<ContactModel>>(responseText, options);
        }
        else
        {
            throw new Exception(response.ReasonPhrase);
        }
    }
}

TantrimOP•2y ago

TantrimOP•2y ago

if you need anymore information please let me know

Accord•2y ago

Looks like nothing has happened here. I will mark this as stale and this post will be archived until there is new activity.

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❔ Unable to resolve service type for IHttpClientFactory