尝试从GetAsync检索响应时收到HTTP状态代码403

Question

I am trying to get some information from an API using GetAsync , but I am getting a status code of 403 even after adding the OAuth authorization header with the token provided for me. Is there something else I need to do, or is my token bad?

class TestAPI
{
    static void Main()
    {
        var client = new HttpClient();
        client.BaseAddress = new Uri(BASE_ADDRESS_FOR_TESTING);
        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("OAuth", TOKEN);

        HttpResponseMessage response = await client.GetAsync("WebApi/CaseLogs/v10/Search?DateFrom=04-05-2012");
        if (response.IsSuccessStatusCode)
        {
            result = await response.Content.ReadAsStringAsync();
        }
        else
        {
            Console.WriteLine((int) response.StatusCode); // prints "403"
        }
    }
}

Answer 1

Your HttpClient looks fine to me. I think your Token is bad.

The 403 Error also supports this theory.

403 FORBIDDEN The server understood the request but refuses to authorize it.

A server that wishes to make public why the request has been forbidden can describe that reason in the response payload (if any). https://httpstatuses.com/403

You should also print your response message.

        using ( HttpResponseMessage response = await client.GetAsync("WebApi/CaseLogs/v10/Search?DateFrom=04-05-2012"))
        using (HttpContent content = response.Content)
        {            
            string result = await content.ReadAsStringAsync();
            Console.WriteLine(result);
        }

Try this code to see if you get more information in the response content.

Hope this helps.