c# - 使用 HttpResponseMessage.EnsureSuccessStatusCode()

Question

getData1Async() 和getData2Async() 这两个方法本质上是一样的吗？如果是这样，为什么我不需要 getData2Async() 方法中的 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 - 此处您获取 HttpResponseMessage 类型的对象，如果您不确保响应已成功完成并调用 response.Content.Read...，则答案将不确定。getData2Async - 直接调用 httpClient 本身来获取字符串，该字符串在内部确保它仅在收到数据时返回。