【发布时间】:2012-02-23 12:13:16
【问题描述】:
最近我们从 ASP.NET 网络服务中获取 System.Threading.ThreadAbortExceptions,该网络服务每晚将数据发布到支付服务器。
网络服务是一个标准的 .asmx 页面,从另一个客户端调用。
在页面内部,我有一个 foreach 循环,它遍历数据库中的许多支付行:
foreach (var obtRow in readyToBeCaptured)
{
try
{
status = dibs.GetPagePost(...);
// handle status here
}
catch (ThreadAbortException tex)
{
SingletonLogger.Instance.Error(string.Format("Transactionhandler - Could not Capture, Thread was aborted. {0}", tex.Message), tex);
}
catch (Exception ex)
{
SingletonLogger.Instance.Error(string.Format("Transactionhandler - Could not Capture, statuscode: {0}, message: {1}.", status, ex.Message), ex);
}
}
奇怪的是,当发生此错误时,我从 catch(ThreadAbortException tex) 块中获得了一个日志条目,但随后代码中断并被捕获在调用树更上方的另一个 try catch 块中。理想情况下,我会让 foreach 循环中的代码继续
这是 GetPagePost 方法
private bool GetPagePost(string url, NameValueCollection nameValueCollection, string userName, string password)
{
WebClient client = new WebClient();
if (userName != "")
{
client.Credentials = new NetworkCredential(userName, password);
}
foreach (string str in nameValueCollection.AllKeys)
{
this._callCollection.Add(str, nameValueCollection[str]);
}
StringBuilder builder = new StringBuilder();
builder.Append("DIBS.NET/1.2.0 ( ");
builder.Append("OS ").Append(Environment.OSVersion.Platform).Append(" ").Append(Environment.OSVersion.Version).Append("; ");
builder.Append(".NET CLR ").Append(Environment.Version).Append("; ");
builder.Append("User ").Append(Environment.UserName).Append("; ");
builder.Append("Domain ").Append(Environment.UserDomainName).Append("; ");
builder.Append(" ) ");
client.Headers.Add("User-Agent", builder.ToString());
try
{
byte[] bytes = client.UploadValues(url, "POST", nameValueCollection);
this._httpStatus = 200;
this._httpBody = Encoding.UTF8.GetString(bytes);
return true;
}
catch (WebException exception)
{
this._httpBody = exception.Message;
this._httpStatus = (int) exception.Status;
}
catch (UriFormatException exception2)
{
this._httpBody = exception2.Message;
this._httpStatus = -9999;
}
catch (Exception exception3)
{
this._httpBody = exception3.Message;
this._httpStatus = -99999;
}
return false;
}}
为什么会出现这个错误,如何防止代码跳出 foreach 循环? 我一直在 StackOverflow 上查看其他一些帖子,但它们似乎与我不使用的 Reponse.Redirect 的使用有关。
谢谢
/詹斯
【问题讨论】:
标签: c# asp.net web-services