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如何使用cookie在浏览器中打开页面?

cookies asp.net-mvc

Oleg Sh · 技术社区 · 6 年前

例如,我有一个网页(ASP.NETMVC),在那里我得到一些资源的cookie。

        CookieContainer cookies = new CookieContainer();
        HttpClientHandler handler = new HttpClientHandler();
        handler.CookieContainer = cookies;
        string data = "<Request><MsgType>Authenticate</MsgType><SubMsgType>Login</SubMsgType><UserID>MYLOGIN</UserID><passwordNotEncrypted>MYPASSWORD</passwordNotEncrypted></Request>";
        StringContent content = new StringContent(data, Encoding.UTF8, "text/xml");

        HttpClient client = new HttpClient(handler);
        Uri uri = new Uri("https://address/browserservices.aspx/login");
        HttpResponseMessage response = client.PostAsync(uri, content).Result;

此请求将auth cookie设置为 cookies 变量。下一个请求很好:

        var result = client.GetAsync("https://address/RemoteSupport.aspx?id=bla-bla-bla&pltFrmType=Android&agentversion=13.46").Result;
        var text = result.Content.ReadAsStringAsync().Result;

(如果我叫它没有饼干,我会得到 Unauthorized

现在我想重定向到这个 https://address/RemoteSupport.aspx?id=bla-bla-bla&pltFrmType=Android&agentversion=13.46 带cookie的地址。所以,用户应该看看它重定向到这个地址。怎么做?

        foreach (Cookie cookie in responseCookies)
        {
            Response.Cookies.Append(cookie.Name, cookie.Value);
        }

        return Redirect($"https://address/RemoteSupport.aspx?id={id}&pltFrmType=Android&agentversion=13.46");

但它不起作用

1 回复 | 直到 6 年前

ste-fu 6 年前

你不能只做重定向。在MVC中,向浏览器返回302状态码,指示浏览器向第三方站点发出自己的请求。

使用相同的 HttpClient 您需要向第三方服务器发出第二个请求。这将自动将cookie添加到新请求中,然后您可以格式化答案并将其传递给浏览器客户端。

理想情况下,您不应该在方法中实例化HttpClient,因为这意味着您每次必须发出2个请求。也许是这样的:

public class MyController : Controller
{
    private static readonly HttpClient _httpClient;

    public MyController()
    {
        if (_httpClient == null)
        {
            CookieContainer cookies = new CookieContainer();
            HttpClientHandler handler = new HttpClientHandler();
            handler.CookieContainer = cookies;
            _httpClient = new HttpClient(handler);

            LoginWithClient();
        }
    }

    private void LoginWithClient()
    {
        string data = "<Request><MsgType>Authenticate</MsgType><SubMsgType>Login</SubMsgType><UserID>MYLOGIN</UserID><passwordNotEncrypted>MYPASSWORD</passwordNotEncrypted></Request>";
        StringContent content = new StringContent(data, Encoding.UTF8, "text/xml");  
        Uri uri = new Uri("https://address/browserservices.aspx/login");
        HttpResponseMessage response = client.PostAsync(uri, content).Result; 
        // Maybe check the result here, but we should have the cookie by now
    }

    public JsonResult MyAction()
    {
        var result = client.GetAsync("https://address/RemoteSupport.aspx?id=bla-bla-bla&pltFrmType=Android&agentversion=13.46").Result;
        var text = result.Content.ReadAsStringAsync().Result;
        return Json(text, JsonRequestBehavior.AllowGet);
    }

这应该将原始文本字符串返回到浏览器,您可以在浏览器中显示它,或者将其解析为Json或XML或其他格式,并处理数据。