C＃HttpClient通用SendAysnc无法正常工作

问题描述

我不熟悉使用C＃编写通用方法，并且试图在我的c＃项目中创建通用SendAsync方法。代码如下。

HttpClientHelper.cs

public static async Task<T2t> ExecuteRequest<T1,T2>(T2 request,string url)
{
    Uri requestUri = new Uri(url);
    string payload = JsonConvert.SerializeObject(request);
    HttpContent httpContent = new StringContent(payload,"application/json");

    HttpRequestMessage requestMessage = new HttpRequestMessage
    {
        Method = HttpMethod.Post,RequestUri = requestUri,Content = httpContent
    };

    return await SendUriAsync<T2>(requestMessage);
}

public static async Task<T> SendUriAsync<T>(HttpRequestMessage requestMessage)
{
   
    string clint_id = "1234";
    
      var clineCred = Encoding.UTF8.GetBytes($"{client_id}");
        
        using(var result = await client.SendAsync(requestMessage))
        {
            result.EnsureSuccessstatusCode();
            var response = await result.Content.ReadAsstringAsync();
            
            if(result.IsSuccessstatusCode && response != null)
            {
                return JsonConvert.DeserializeObject<T>(response);
            }
            else
            {
                return null;
            }
        }        
 
}

这是调用这些方法的控制器类：

CarSalesController.cs

string thirdpartyUrl = "someurl";
var responSEObject = await HttpClientHelper.ExecuteRequest<CarObject,string>(requestObject,thirdpartyUrl);

我在HttpClientHelper类中遇到错误。错误是：

ResponseStatusCode不指示成功。状态码：401-未经授权

但是当我使用邮递员时，相同的API效果很好。他是cURL

curl --location --request GET'someurl'
--header'client_id：1234'
--header'授权：基本asdf'
--header'Content-Type：application / json'
--data-raw'{ “ data1”：“ somedata1”， “ data2”：“ somedata2” }'

我的代码有什么问题？

解决方法

问题可能出在DeserializeObject上。尝试使用：

response.Content.ReadAsStringAsync()

,

这不是您要做什么吗？

public async Task<TOut> ExecuteRequestAsync<TIn,TOut>( TIn request,string url )
{
    var requestUri = new Uri( url );
    var payload = JsonConvert.SerializeObject( request );
    var httpContent = new StringContent( payload,Encoding.UTF8,"application/json" );
    var requestMessage = new HttpRequestMessage()
    {
        Method = HttpMethod.Post,RequestUri = requestUri,Content = httpContent
    };
    return await SendUriAsync<TOut>( requestMessage );
}

public static async Task<T> SendUriAsync<T>( HttpRequestMessage requestMessage )
{
    using (var client = CreateClient( 1234 ))
    {
        var result = await client.SendAsync( requestMessage );
        result.EnsureSuccessStatusCode();
        var response = await result.Content.ReadAsStringAsync();
        return JsonConvert.DeserializeObject<T>( response );
    }
}

private static HttpClient CreateClient(int clientId)
{
    var clientCred = Encoding.UTF8.GetBytes( clientId.ToString() );
    var auth = Convert.ToBase64String( clientCred );
    var client = new HttpClient();
    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue( "Basic",auth );
    client.DefaultRequestHeaders.Add( "client_id","1234" );
    return client;
}