Csharp 在C#和HttpClient中使用REST API

您可以用与Web客户端完全相同的方式构造请求

class AbstractPricing {
  // Replace this with the actual PayPal web address
  public static string PaypalWebAddress {
    get;
  } = "https://www.example.com/paypal-endpoint";
}

class IpnContext {
  public string RequestBody {
    get;
    set;
  }
  public string Verification {
    get;
    set;
  }
}

// Actual code here, previous code just for testing
var paypalWebAddress = AbstractPricing.PaypalWebAddress;
var strRequest = "cmd=_notify-validate&" + ipnContext.RequestBody;

using (HttpClient httpClient = new HttpClient())
{
    // Create the HTTP content with the correct content type
    var content = new StringContent(strRequest, Encoding.ASCII, "application/x-www-form-urlencoded");

    // Make the POST request
    HttpResponseMessage response = await httpClient.PostAsync(paypalWebAddress, content);

    // Check if the request was successful
    if (response.IsSuccessStatusCode)
    {
        // Read the response content
        ipnContext.Verification = await response.Content.ReadAsStringAsync();
    }
    else
    {
        // Handle the error, e.g., log or throw an exception
        Console.WriteLine($"Error: {response.StatusCode} - {response.ReasonPhrase}");
    }

    // do something with ipnContext here
}