c# - 线程化的 HttpWebResponse 并不总是触发
问题描述
此代码正在 Web 服务中运行。有时它执行得很好，有时似乎线程没有调用 url。我也从来没有看到写在 HttpWebResponse using 语句中的日志事件。我不确定发生了什么，请帮助？
HttpWebRequest urlRequest = (HttpWebRequest)WebRequest.Create(url);
urlRequest.Method = "POST";
byte[] data = Encoding.ASCII.GetBytes(JSON);
urlRequest.ContentLength = data.Length;
urlRequest.ContentType = "application/json";
ThreadPool.QueueUserWorkItem(o =>
{
try
{
new Logger().Info("data length = " + data.Length.ToString());
new Logger().Info(JSON);
new Logger().Info("Before posting to ERPFullAppointmentCheckout controller");
using (Stream stream = urlRequest.GetRequestStream())
{
stream.Write(data, 0, data.Length);
new Logger().Info("Before using HttpWebResponse");
using (HttpWebResponse response = (HttpWebResponse)urlRequest.GetResponse())
{
new Logger().Info("Inside using HttpWebResponse");
string receivedresponse = new StreamReader(response.GetResponseStream()).ReadToEnd();
string statuscode = response.StatusCode.ToString();
new Logger().Info("Response from POST: " + (String.IsNullOrEmpty(receivedresponse) ? "" : receivedresponse));
new Logger().Info("Status Code: " + statuscode);
}
}
new Logger().Info("After posting to ERPFullAppointmentCheckout controller");
}
catch (Exception ex)
{
new Logger().Error("Error posting to ERPFullAppointmentCheckout controller", ex);
}
});
解决方案
利用：
HostingEnvironment.QueueBackgroundWorkItem
代替：
ThreadPool.QueueUserWorkItem
查看这两个链接以获取有关差异的更多信息...