Question

需要向需要特定cookie的服务器发出请求。可以使用HTTP客户端和带有cookiecontainer的处理程序来执行此操作。通过使用类型化客户端，无法找到设置cookiecontainer的方法。

使用httpclient：

var cookieContainer = new CookieContainer();
using (var handler = new HttpClientHandler() { CookieContainer = cookieContainer })
using (HttpClient client = new HttpClient(handler))
{
    //.....

    // Used below method to add cookies
    AddCookies(cookieContainer);

    var response = client.GetAsync('/').Result;
}

使用HttpClientFactory：

在startup.cs

services.AddHttpClient<TypedClient>().
           ConfigurePrimaryHttpMessageHandler(() => new HttpClientHandler
           {
               CookieContainer = new CookieContainer()
            });

在控制器类中

// Need to call AddCookie method here
var response =_typedclient.client.GetAsync('/').Result;

在Addcookie方法中，我需要将cookie添加到容器中。有关如何执行此操作的任何建议。

Answer 1

创建抽象以提供对CookieContainer实例的访问

例如

public interface ICookieContainerAccessor {
    CookieContainer CookieContainer { get; }
}

public class DefaultCookieContainerAccessor : ICookieContainerAccessor {
    private static Lazy<CookieContainer> container = new Lazy<CookieContainer>();
    public CookieContainer CookieContainer => container.Value;
}

在启动期间将cookie容器添加到服务集合中，并使用它来配置主要的HTTP消息处理程序

Startup.ConfigureServices

//create cookie container separately            
//and register it as a singleton to be accesed later
services.AddSingleton<ICookieContainerAccessor, DefaultCookieContainerAccessor>();

services.AddHttpClient<TypedClient>()
    .ConfigurePrimaryHttpMessageHandler(sp =>
        new HttpClientHandler {
            //pass the container to the handler
            CookieContainer = sp.GetRequiredService<ICookieContainerAccessor>().CookieContainer
        }
    );

最后，在需要的地方注入抽象

例如

public class MyClass{
    private readonly ICookieContainerAccessor accessor;
    private readonly TypedClient typedClient;

    public MyClass(TypedClient typedClient, ICookieContainerAccessor accessor) {
        this.accessor = accessor;
        this.typedClient = typedClient;
    }

    public async Task SomeMethodAsync() {
        // Need to call AddCookie method here           
        var cookieContainer = accessor.CookieContainer;
        AddCookies(cookieContainer);

        var response = await typedclient.client.GetAsync('/');

        //...
    }

    //...
}

具有类型客户端的cookieContainer

1 个答案: