/// <summary>
/// HttpClientFactory使用
/// </summary>
/// <returns></returns>
public IActionResult HttpClientFactoryGet()
{
//1.默认使用
var client = _httpClient.CreateClient();
//2.通过http-client名字创建，名字在startup中指定
client = _httpClient.CreateClient("github");
//3.使用自定义的HttpClient类
_gitHubClient.GetData();
client.BaseAddress = new Uri("");
client.PostAsync("/", new StringContent("", Encoding.UTF8, "application/json"));
return(Ok());
}