Question

我正在使用第三方API添加日志API调用，我想异步调用此API以不影响主API调用的时间，此过程也是低优先级（即使API结果也不会使用。）

我试过下面的代码，但似乎对我不起作用：

string strLogURL = "www.example.com";
var httpWebRequest = (HttpWebRequest)WebRequest.Create(strLogURL);
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
    string json = new JavaScriptSerializer().Serialize(objAPILog);            
    streamWriter.Write(json);
    streamWriter.Flush();
    streamWriter.Close();
}
httpWebRequest.BeginGetResponse(new AsyncCallback(FinishWebRequest), httpWebRequest);

任何人都可以知道如何异步调用来自WCF的API吗？

Answer 1

你可以创建一个这样的方法：

private static T Call<T>(string url, string body, int timeOut = 60)
{
    var contentBytes = Encoding.UTF8.GetBytes(body);
    var request = (HttpWebRequest)WebRequest.Create(url);

    request.Timeout = timeOut * 1000;
    request.ContentLength = contentBytes.Length;
    request.Method = "DELETE";
    request.ContentType = @"application/json";

    using (var requestWritter = request.GetRequestStream())
        requestWritter.Write(contentBytes, 0, (int)request.ContentLength);

    var responseString = string.Empty;
    var webResponse = (HttpWebResponse)request.GetResponse();
    var responseStream = webResponse.GetResponseStream();
    using (var reader = new StreamReader(responseStream))
    {
        reader.BaseStream.ReadTimeout = timeOut * 1000;
        responseString = reader.ReadToEnd();
    }

    return JsonConvert.DeserializeObject<T>(responseString);
}

然后你可以像这样异步调用它：

    Task.Run(() => Call<dynamic>("www.example.com", "body"));

Answer 2

如果异步是您正在寻找的所有内容，那么您可以通过D:\使用HttpClient / async来实现这一目标。然后你可以开火＆amp;忘记，或确保在离开你的呼叫方法之前已经完成。

await

异步Web请求在WCF中不起作用

2 个答案: