我正在尝试将一些输出写入我的服务器上的.csv文件中。我使用以下代码,但文件中仍然没有输出。 意味着什么都没写。 我的代码在这里
void WriteInRegister(DataRow userdata)
{
HttpWebRequest reqHTTP;
StringBuilder result = new StringBuilder();
try
{
reqHTTP = (HttpWebRequest)HttpWebRequest.Create(new Uri("http://10.10.10.10/config/RequestPlacer.csv"));
reqHTTP.Credentials = new NetworkCredential("usename", "password");
if (reqHTTP != null)
{
reqHTTP.ContentType = "application/octet-stream";
reqHTTP.Method = WebRequestMethods.File.UploadFile;
}
string postdata = (userdata[0].ToString() + ",MacId," + DateTime.Now.ToShortDateString()).ToString();
byte[] text = Encoding.UTF8.GetBytes(postdata);
reqHTTP.ContentLength = text.Length;
/* WebClient wcClient = new WebClient();
wcClient.Credentials = new NetworkCredential("usename", "password");
wcClient.UseDefaultCredentials = true;*/
//wcClient.OpenWrite(new Uri("http://10.10.10.10/config/RequestPlacer.csv"), postdata);
// string path = System.Web.HttpContext.Current.Server.MapPath("http://10.10.10.10/config/RequestPlacer.csv");
reqHTTP.AllowWriteStreamBuffering = true;
Stream writer = reqHTTP.GetRequestStream();
/* wcClient.Headers.Add("Content-Type", "application/csv");
wcClient.UploadString(new Uri("http://10.10.10.10/config/RequestPlacer.csv"), "POST", postdata);*/
StreamWriter streamwriter = new StreamWriter(writer);
streamwriter.WriteLine(postdata);
streamwriter.Close();
}
catch (Exception exe)
{
MessageBox.Show(exe.Message);
}
}
异常是(“请求已中止:请求已取消。”)
答案 0 :(得分:0)
我认为问题在于您写入流的内容与Content-Length
标题中指定的长度不匹配:因为您使用streamwriter.WriteLine
,您还会写回车+在您发送的内容长度中未计入的换行符。
例如,如果您的postdata
为"foo"
,则Encoding.UTF8.GetBytes(postdata).Length
将返回3,但streamwriter.WriteLine(postdata)
实际上会写入"foo\r\n"
,即5个字节。< / p>
您只需使用Write
代替WriteLine
(或者如果您想保留内容长度,则计算内容长度中的新行)