httpClientFactory- 服务 AddHttpClient

Question

我在遵循本指南时遇到问题：https://learn.microsoft.com/en-us/aspnet/core/fundamentals/http-requests ?view=aspnetcore-2.1#basic-usage

这是我的配置服务

public void ConfigureServices(IServiceCollection services)
        {
            services.AddHttpClient();

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
        }

这是我的页面

 public class IndexModel : PageModel
    {
        private readonly IHttpClientFactory httpClientFactory;

        public IList<Blog> Blog { get; set; }

        public IndexModel(IHttpClientFactory httpClientFactory)
        {
            this.httpClientFactory = httpClientFactory;
        }


        public async Task OnGetAsync()
        {

        }
    }

我在浏览我的页面时收到以下错误：

public void ConfigureServices(IServiceCollection services)
        {
            services.AddHttpClient();

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
        }

我错过了什么吗？感谢您的任何建议

问候，

富

Answer 1

HttpClientFactory 未注入，AddHttpClient 注入 HttpClient。

尝试：

public class SampleService : ISampleService
{
    private readonly HttpClient _httpClient;
    public SampleService(HttpClient httpClient)
    {
        _httpClient = httpClient;
    }
}