我的 Windows 10 UWP 应用正在调用我创建的 WebAPI 网络服务。我需要在调用 Web 服务时在客户端传递当前凭据,以便它可以使用这些凭据访问其他资源。
我还需要在不提示用户输入凭据的情况下执行此操作,以便体验是无缝的。
我可以使用 System.Net.Http
来做到这一点,并成功地将当前凭据传递给服务器以用于访问资源。这将发送请求并在没有任何提示的情况下带回响应。我在 UWP 应用上启用了 Enterprise Authentication
和 Private Networks
功能来完成这项工作。
问题:这对 GET 请求有效,但对同一服务器的 POST 请求无效。 POST 请求导致以下错误:
This IRandomAccessStream does not support the GetInputStreamAt method because it requires cloning and this stream does not support cloning.
我读到这是此链接上的错误:PostAsync throwing IRandomAccessStream error when targeting windows 10 UWP .针对此错误在多个位置提出的解决方法是改用 Windows.Web.Http
。但是,如果我这样做,我该如何将默认/当前凭据传递给服务器?
这是我用来使用当前 Windows 凭据执行 GET 请求而不提示的代码。它完美地工作:
System.Net.Http.HttpClientHandler handler = new System.Net.Http.HttpClientHandler
{
UseDefaultCredentials = true
// Credentials = (NetworkCredential)System.Net.CredentialCache.DefaultNetworkCredentials
//using either one of the above enables me to have the web service use the current credentials without prompting
};
string responseContent = string.Empty;
using (System.Net.Http.HttpClient client = new System.Net.Http.HttpClient(handler))
{
System.Net.Http.HttpRequestMessage requestMessage = new System.Net.Http.HttpRequestMessage();
requestMessage = new System.Net.Http.HttpRequestMessage
{
Method = System.Net.Http.HttpMethod.Get,
RequestUri = new Uri(strWebServiceURL)
};
using (System.Net.Http.HttpResponseMessage response = await client.SendAsync(requestMessage))
{
responseContent = await response.Content.ReadAsStringAsync();
}
//This also works fine
using (System.Net.Http.HttpResponseMessage response = await client.GetAsync(strWebServiceURL))
{
responseContent = await response.Content.ReadAsStringAsync();
}
下面是我用来执行导致 IRandomAccessStream
错误的 POST 请求的代码:
System.Net.Http.HttpClientHandler handler = new System.Net.Http.HttpClientHandler
{
UseDefaultCredentials = true
// Credentials = (NetworkCredential)System.Net.CredentialCache.DefaultNetworkCredentials
//using either one of the above enables me to have the web service use the current credentials without prompting
};
string responseContent = string.Empty;
using (System.Net.Http.HttpClient client = new System.Net.Http.HttpClient(handler))
{
System.Net.Http.HttpRequestMessage requestMessage = new System.Net.Http.HttpRequestMessage();
requestMessage = new System.Net.Http.HttpRequestMessage
{
Content = myMultipartFormDataContent,
Method = System.Net.Http.HttpMethod.Post,
RequestUri = new Uri(strWebServiceURL)
};
using (System.Net.Http.HttpResponseMessage response = await client.SendAsync(requestMessage))
{
responseContent = await response.Content.ReadAsStringAsync();
}
//No difference when using it this way as well
using (System.Net.Http.HttpResponseMessage response = await client.PostAsync(strWebServiceURL, myMultipartFormDataContent))
{
responseContent = await response.Content.ReadAsStringAsync();
}
我尝试使用 Windows.Web.Http
但我不知道如何让它在没有提示的情况下将当前/默认凭据传递给服务器。
我还将 WebService URL 添加到 IE 本地 Intranet 区域,并将该区域设置为使用当前用户名和密码自动登录:
请帮忙!
最佳答案
在 UWP 应用程序中使用新的 Windows.Web.Http
命名空间,如果您想使用 DefaultCredentials
,您只需在 list 和 uwp 应用程序将根据需要发送它们。您无需在 HttpClient
上配置任何内容即可使其正常工作。详情请引用this thread .
因为您已经启用了企业凭据功能,所以您可以创建 HttpClient
而无需配置。但是为了避免用户名和密码提示,您可能需要禁用 UI,例如:
var myFilter = new HttpBaseProtocolFilter();
myFilter.AllowUI = false;
Windows.Web.Http.HttpClient client = new Windows.Web.Http.HttpClient(myFilter);
Windows.Web.Http.HttpResponseMessage result = await client.GetAsync(new Uri("http://localhost:5132/api/values"));
关于c# - 将当前身份验证凭据从 UWP 应用程序传递到 Web 服务,以使用这些凭据访问服务器上的资源,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49417081/