WebAPI学习笔记（11）使用Bearer 认证调用API

调用：

Task<string> task = MethodHelper.GetBearerAccessToken();
string bearerAccessToken = task.Result;

string content = @"{...}";
HttpContent httpContent = new StringContent(content, Encoding.UTF8, "application/json");
using (HttpClient httpClient = new HttpClient())
{
　　AuthenticationHeaderValue authentication = new AuthenticationHeaderValue("bearer", bearerAccessToken);
　　httpClient.DefaultRequestHeaders.Authorization = authentication;
　　httpClient.DefaultRequestHeaders.Add("user-key", "...");

　　//发送
　　var response = httpClient.PostAsync(config.BaseAddress, httpContent).Result;
　　if (response.IsSuccessStatusCode)
　　{
　　　　//Successfully
　　}
　　else
　　{
　　　　//Failed
　　}
}

生成Bearer Token方法:

public static async Task<string> GetBearerAccessToken()
{
　　string clientId = ConfigurationManager.AppSettings["...ClientId"].ToString();
　　string clientSecret = ConfigurationManager.AppSettings["...BearerClientSecret"].ToString();
　　string instance = ConfigurationManager.AppSettings["...BearerInstance"].ToString();
　　string tenantId = ConfigurationManager.AppSettings["...BearerTenantId"].ToString();
　　string resourceId = ConfigurationManager.AppSettings["...BearerResourceId"].ToString();
　　string authority = string.Format(CultureInfo.InvariantCulture, instance, tenantId);

　　IConfidentialClientApplication app = ConfidentialClientApplicationBuilder.Create(clientId)
                                                .WithClientSecret(clientSecret)
                                                .WithAuthority(new Uri(authority))
                                                .Build();

　　string[] resourceIds = new string[] { resourceId };

　　AuthenticationResult result = null;
　　try
　　{
　　　　result = await app.AcquireTokenForClient(resourceIds).ExecuteAsync().ConfigureAwait(false);
　　　　return result.AccessToken;
　　}
　　catch (Exception ex)
　　{
　　　　throw;
　　}
}