授权Azure REST API请求

Question

我正在尝试编写一个本地控制台应用程序，它将使用Azure REST API交换Azure Web App插槽。使用以下代码我得到401（未授权）响应：

public async Task Swap(string subscription, string resourceGroup, string site, string slot) 
{
    var client = new HttpClient();

    var url =
        $"https://management.azure.com/subscriptions/{subscription}/resourceGroups/{resourceGroup}/providers/Microsoft.Web/sites/{site}/applySlotConfig?api-version=2016-08-01";

    var data = new {preserveVnet = true, targetSlot = slot};

    var message = new HttpRequestMessage
    {
        RequestUri = new Uri(url),
        Method = HttpMethod.Post,
        Content = new StringContent(JsonConvert.SerializeObject(data), Encoding.UTF8, "application/json")
    };

    var response = await client.SendAsync(message);

    Console.WriteLine(response.StatusCode);
} 

我知道我需要提供某种凭据，但我发现的内容似乎适用于使用Azure AD进行身份验证的应用程序。这将是一个具有匿名身份验证的可公开访问的Web应用程序。

Answer 1

一般来说，您需要使用Auth令牌将Authorization标头附加到请求。有很多方法可以获得它，请参阅此link或this。

Answer 2

这就是我设法做到这一点（使用提供的链接）：

private async Task<string> GetAccessToken(string tenantName, string clientId, string clientSecret)
{
    var authString = "https://login.microsoftonline.com/" + tenantName;
    var resourceUrl = "https://management.azure.com/";

    var authenticationContext = new AuthenticationContext(authString, false);
    var clientCred = new ClientCredential(clientId, clientSecret);
    var authenticationResult = await authenticationContext.AcquireTokenAsync(resourceUrl, clientCred);
    var token = authenticationResult.AccessToken;

    return token;
}

然后在我以前的方法：

public async Task Swap(string subscription, string resourceGroup, string site, string slot) 
{
    var client = new HttpClient();

    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", await GetAccessToken("XXX", "XXX", "XXX"));

    var url =
            $"https://management.azure.com/subscriptions/{subscription}/resourceGroups/{resourceGroup}/providers/Microsoft.Web/sites/{site}/applySlotConfig?api-version=2016-08-01";

    var data = new {preserveVnet = true, targetSlot = slot};

    var message = new HttpRequestMessage
    {
        RequestUri = new Uri(url),
        Method = HttpMethod.Post,
        Content = new StringContent(JsonConvert.SerializeObject(data), Encoding.UTF8, "application/json")
    };

    var response = await client.SendAsync(message);

    Console.WriteLine(response.StatusCode);
}