C#下载报错：An exception occurred during a WebClient request.，不知道如何处理。

来源：互联网发布：内网渗透端口转发编辑：程序博客网时间：2024/06/05 18:41

            //如果下载失败会请求3次            string exep = "";            do            {                try                {                    if (!Directory.Exists(Dir))                    {                        Directory.CreateDirectory(Dir);                    }                    using (var wc = new WebClient())                    {                        wc.Credentials = CredentialCache.DefaultCredentials;                        wc.Headers.Add(HttpRequestHeader.UserAgent, "anything");                        wc.DownloadFile(strFullName, Dir + strFullName.Substring(strFullName.LastIndexOf('/') + 1));                    }                    return true;                }                catch (System.Net.WebException ex)                {                    //图片服务器上也存在也会报错                    if (ex.Message == "An exception occurred during a WebClient request.")                    {                        exep = "occurred";                    }                    else {                        exep = "";                    }                }                catch (Exception ex)                {                    LogMsg.WriteLogToApplicationFolderByMonth(ex.ToString() + "-------------------------------------FileURL：" + strFullName);                    return false;                }            } while (exep == "occurred");            return true;

图片在服务器存在，能够正常访问，但是下载的时候时不时会报“An exception occurred during a WebClient request.”

不知道如何处理，所以就做了一个循环，最多下砸3次。（目前可以解决下载的问题，因为这个问题是偶尔发生在某一个下载请求里，所以用了个循环请求直至3次请求下载完成）

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