Question

我的输入是一个字符串数组，我无法找到如何在C＃.net

中异步发布请求

string[] arr1 = new string[] { "one", "two", "three" };

client.BaseAddress = new Uri(this.baseServiceURL);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new  MediaTypeWithQualityHeaderValue(application/json));

var content = new StringContent(arr1.tostring());
//Make Rest API Get Method call                  
HttpResponseMessage response = client.PostAsync(url, content).Result;
if (response.IsSuccessStatusCode)
{

}

Answer 1

试试这个

 public async void AsyncPost()
        {
            string[] values= new string[] { "one", "two", "three" };

            var content = JsonConvert.SerializeObject(new {
           Values= values
            });

            using (var client = new HttpClient())
            {
                try
                {
                    var httpResponseMessage = await client.PostAsync("http://SomeUrl.somewhere", content);

                    if (httpResponseMessage.StatusCode == HttpStatusCode.OK)
                    {
                        // Do something...
                    }
                }
                catch (OperationCanceledException) { }
            }
        }

Answer 2

如果您想将*用作application/json，则必须序列化您的输入。

我强烈建议您在客户端上使用Json.NET将数组序列化为json字符串：

Content-Type

作为替代方案，您可以手动序列化字符串数组：

var content = new StringContent(JsonConvert.SerializeObject(arr1), Encoding.UTF8, "application/json");

但我不鼓励你使用这种容易出错的方法。

旁注：

根据您使用的.NET Framework版本，您可以添加var serialized = "[" + string.Join(",", arr1.Select(v => "\"" + v + "\"")) + "]"; var content = new StringContent(serialized, Encoding.UTF8, "application/json");包并使用HttpClient.PostAsJsonAsync<T>方法让框架完成繁重工作：

Microsoft.AspNet.WebApi.Client

如何在C＃.NET中使用Async POST请求发布字符串数组

2 个答案:

旁注：