使用HttpResponseMessage.EnsureSuccessStatusCode()

Question

以下两种方法，getData1Async()和getData2Async()本质上是相同的吗？如果是这样，为什么我不需要在getData2Async()方法中使用EnsureSuccessStatusCode()？

class Program
{
    static void Main(string[] args)
    {
        try
        {
            string uri = "https://www.blahblah.com/getdata";
            Task<string> x = getData1Async(uri);
            System.Diagnostics.Debug.WriteLine(x.Result);
            Task<string> y = getData2Async(uri);
            System.Diagnostics.Debug.WriteLine(y.Result);
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }

    static async Task<string> getData1Async(string uri)
    {
        HttpClient client = new HttpClient();
        HttpResponseMessage response = await client.GetAsync(uri);
        response.EnsureSuccessStatusCode();
        return await response.Content.ReadAsStringAsync();
    }

    static async Task<string> getData2Async(string uri)
    {
        var httpClient = new HttpClient();
        return await httpClient.GetStringAsync(uri);
    }
}

Answer 1

getData1Async -在这里，您将获取类型为HttpResponseMessage的对象，如果您不能确保响应已成功完成并调用response.Content.Read...，则答案将是不确定的。getData2Async -直接调用httpClient本身来获取字符串，这在内部确保它只在接收到数据时返回。