System.Net.WebRequest - 超时错误

Question

下面的代码给出 错误消息:"操作已超时"错误Sourse:在System.Net.httpWebRequest.GetResponse()

此方法调用URL并获取响应对象.

注意:这一切都在我的工作正常..但是当我发送相同的代码到生产..它显示时间错误

public GetUpdatedInventoryUnitValues(Vehicle aeVehicle)
{
            WebRequest oWebRequest = null;
            StringBuilder oStringBuilder = null;
            StreamReader oStreamReader = null;
            dcDealerDetails = new Dictionary<string, string>();

            MSRP = string.Empty;
            NetPrice = string.Empty;
            string strLine = string.Empty;
            string strURL = GetUpdatedInventoryUnitValues.GetFormattedURL(aeVehicle);

            try
            {
                /* Open the requested URL */
                oWebRequest = WebRequest.Create(strURL);
                oWebRequest.Method = "GET";
                oWebRequest.ContentType = "application/xml";
                /* Get the stream from the returned web response */
                oStreamReader = new StreamReader(oWebRequest.GetResponse().GetResponseStream());
                /* Get the stream from the returned web response */
                oStringBuilder = new StringBuilder();
                /* Read the stream a line at a time and place each one into the stringbuilder  */
                while ((strLine = oStreamReader.ReadLine()) != null)
                {
                    /* Ignore blank lines */
                    if (strLine.Length > 0)
                        oStringBuilder.Append(strLine);
                }

                string[] tempArray = null;
                string[] tempNextArray = null;
                //Split string by semicolon as a separater
                tempArray = Data.SplitString(oStringBuilder.ToString(), new char[] { ';' });

                if (tempArray != null)
                {
                    foreach (string invUnits in tempArray)
                    {
                        //Split string by '=' as a separater
                        tempNextArray = Data.SplitString(invUnits, new char[] { '=' });

                        if (tempNextArray != null && tempNextArray.Length == 2)
                        {
                            switch (tempNextArray[0].ToLower())
                            {
                                //case "msrp":
                                //    MSRP = Data.RemoveDoubleCode(tempNextArray[1]);
                                //    break;
                                case "netprice":
                                    NetPrice = Data.RemoveDoubleCode(tempNextArray[1]);
                                    break;
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                ErrorLog.ErrorMessage = ErrorLog.Separator;
                ErrorLog.ErrorMessage = "Exception during posting data to another application .";
                ErrorLog.ErrorMessage = "ERROR MESSAGE : " + ex.Message;
                ErrorLog.ErrorMessage = "ERROR SOURCE: " + ex.StackTrace.ToString();

            }
            finally
            {
                if (oStreamReader != null)
                {
                    oStreamReader.Close();
                }
                if (oWebRequest != null)
                {
                    oWebRequest = null;
                }
            }
        }

请告诉我我做错了什么或丢失了什么？

Answer 1

您是否可能发现前几个请求没问题,然后他们开始计时？如果是这样,我怀疑这是问题所在:

oStreamReader = new StreamReader(oWebRequest.GetResponse().GetResponseStream());

你正在获取响应,但从不处理它.你应该使用:

using (var response = oWebRequest.GetResponse())
{
    ...
}

事实上,finally如果你using在整个过程中使用语句,你可以完全摆脱你的阻止.

顺便说一句,这是一个很长的方法 - 77行! - 更糟糕的是,看起来它实际上是一个构造函数:

• 尝试将其拆分为更小,更容易理解,更容易测试的块
• 尽量避免在构造函数中做很多工作