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我正在构建一个访问 Maximo Rest API 的应用程序，这是我用来调用 API 的代码。

我正在使用 .NET Framework 4.5 C#

public class MaximoClient
{

    private string ServerURL;
    private string AuthUsername;
    private string AuthPassword;
    private CookieContainer cookieContainer = null;

    private string HttpGetRequest(string URL)
    {
        string ResponseContent;
        try
        {
            if (this.cookieContainer == null)
            {
                this.Authenticate();
            }


            HttpClientHandler handler = new HttpClientHandler
            {
                CookieContainer = this.cookieContainer
            };
            HttpClient client = new HttpClient(handler);

            HttpRequestMessage Request = new HttpRequestMessage
            {
                RequestUri = new Uri(URL, UriKind.Absolute),
                Method = HttpMethod.Get
            };


            var Response = client.SendAsync(Request).Result;
            ResponseContent = Response.Content.ReadAsStringAsync().Result;
        }
        catch (Exception e)
        {
            throw e;
        }

        return ResponseContent;
    }



    private void Authenticate()
    {
        try
        {
            this.cookieContainer = new CookieContainer();
            HttpClientHandler handler = new HttpClientHandler
            {
                CookieContainer = cookieContainer,
                AllowAutoRedirect = false,
                UseCookies = true,

            };

            this.Client = new HttpClient(handler);

            HttpClient client = this.Client;

            HttpRequestMessage Request = new HttpRequestMessage
            {
                RequestUri = new Uri($"{this.ServerURL}/oslc/j_security_check", UriKind.Absolute),
                Method = HttpMethod.Post
            };
            var postData = Encoding.ASCII.GetBytes($"j_username={this.AuthUsername}&j_password={this.AuthPassword}");
            Request.Content = new ByteArrayContent(postData);
            Request.Content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");


            HttpResponseMessage Response = client.SendAsync(Request).Result;

            string ResponseContent = Response.Content.ReadAsStringAsync().Result;

            int code = (int)Response.StatusCode;
            if (code > 399)
            {
                throw new Exception("HttpWebRequest returned Status Code:" + Response.StatusCode + " : " + Response.ReasonPhrase);
            }
        }
        catch (Exception e)
        {
            throw e;
        }
    }

}

如您所见，我正在使用 cookie 容器来捕获身份验证时随响应发送的 cookie。Authenticate() 有效。它返回一个带有 LTPA 令牌的 302。但是 GET 请求失败。我收到此错误：

用于登录的 LTPA 令牌无效。启用 WebSphere Application Server 安全性时，LTPA 令牌用于登录过程。等待几秒钟，然后再次尝试登录。如果问题仍然存在，请清除浏览器 cookie 或重新启动浏览器

我在使用 Postman 时遇到了类似的错误，但是当我再次尝试请求时，它可以工作。

我切换了框架并使用了 .NET Core 2.1。完全相同的代码可以正常工作。

为什么这适用于 .NET Core 而不是 .NET 框架？使用 .NET 核心不能解决我的问题，它需要 .NET 4.5。谁能帮我这个？

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0 回答 0