无法通过具有JWT身份验证的API进行授权Im正在使用Xamarin

Question

Well Im new in Xamarin and I'm developing and App, the authentication is JWT based. Im using a HttpClient and setting the AuthenticationHeaders but It always returns Unauthorized when I try it on Postman it Works but I can't make it work in my app.

Here is how im trying to do it:

var client = new HttpClient(new HttpClientHandler());
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("JWT", accessToken);
client.BaseAddress = new Uri(urlBase);
var url = string.Format("{0}{1}", servicePrefix, controller);
var response = await client.GetAsync(url);

Answer 1

Try something like this

using (var client = new HttpClient())
        {
            var uri = new Uri(string.Format($"{<yourURLString>}", string.Empty));
            var jsonTransport = "";
            var jsonPayload = new StringContent(jsonTransport, Encoding.UTF8, "application/json");
            //client.DefaultRequestHeaders.Add("Content-type", "application/json");
            client.DefaultRequestHeaders.Add("Authorization", "JWT " + accessToken);
            var response = await client.PostAsync(uri, jsonPayload);
            string responseContent = await response.Content.ReadAsStringAsync();
        }

then deserialize the responseContent to your object using JsonConvert.DeserializeObject Note: Below are code samples, edit to your own objects

SubscriptionResponse profileResponse = JsonConvert.DeserializeObject<SubscriptionResponse>(responseContent);

then if your method returns something, use the return statement. Something like this

return profileResponse.Data.Subscriptions;

Answer 2

If you're using a get, this could be a guide

var uri = new Uri(string.Format($"{<yourURLHere>}", string.Empty));
client.DefaultRequestHeaders.Add("Authorization", "JWT " + accessToken);
var httpResponse = await client.GetAsync(uri);
var responseContent = await httpResponse.Content.ReadAsStringAsync();

then deserialize your string response Note: this is a sample - edit to your model (You may use PostMan to get the response format in JSON and model it in C#)

var UserDetailResponse = JsonConvert.DeserializeObject<UserDetail>(responseContent);
return UserDetailResponse;