Question

我正在尝试为ASP.Net Core 2.2应用程序的特定端点的所有API调用创建可由控制器和常规函数访问的服务。每当我尝试注入HttpClient类时，在可以访问功能之前都会发生错误/

我已经按照文档中所示设置了startup.cs，并将构造函数的输入减少为HttpClient，所以我知道这是问题的根源。我已经以我能想到的所有方式将HttpClient添加到Startup.cs类的configure services部分中。

Startup.cs

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors();
            ...
                        // adding ability to make basic http calls 
            services.AddHttpClient<IServerInventoryService, ServerInventoryService>(c =>
            {
                c.BaseAddress = new Uri("https://serverinventory.cooperatorsgroup.ca/api/");
            }).ConfigurePrimaryHttpMessageHandler(() =>
            {
                return new HttpClientHandler()
                {
                    AllowAutoRedirect = false,
                    UseDefaultCredentials = true
                };
            });

}

控制器：

       private ILogger<ServerInventoryApiController> logger;
        private IHttpClientFactory clientFactory;
        private readonly IServerInventoryService ServerInventoryService;
        public ServerInventoryApiController(ILogger<ServerInventoryApiController> _logger, IServerInventoryService _service, IHttpClientFactory httpClientFactory)
        {
            ServerInventoryService = _service;
            logger = _logger;
            clientFactory = httpClientFactory;
        }

APIService：

  public class ServerInventoryService : IServerInventoryService
    {
        private HttpClient client;
        //        private readonly IConfiguration configuration;

        public ServerInventoryService(HttpClient httpClient)
        {
            client = httpClient;
        }

每次调用服务结果是：

“ InvalidOperationException：找不到类型为'ApplicationInventory.Services.ServerInventoryService'的合适的构造函数。确保类型是具体的，并且已为公共构造函数的所有参数注册了服务。“

找不到类型为'ApplicationInventory.Services.ServerInventoryService'的合适构造函数

0 个答案: