为什么使用post上传不了文件?总是异常
private void Button_Click_1(object sender, RoutedEventArgs e){
var webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "POST";
webRequest.ContentType = "multipart/form-data; boundary=" + boundary;
webRequest.BeginGetRequestStream(HttpPostCallback, webRequest);
stringDict.Clear();
stringDict.Add("user_id", textbox1.Text);
}
private void HttpPostCallback(IAsyncResult result)
{
StringBuilder request = new StringBuilder();
var req = result.AsyncState as HttpWebRequest;
var requestStream = req.EndGetRequestStream(result);
var beginBoundary = "--" + boundary + "\r\n";
var stringKeyHeader = "\r\n--" + boundary +
"\r\nContent-Disposition: form-data; name=\"{0}\"" +
"\r\n\r\n{1}\r\n";
// var endBoundary = "--" + boundary + "--\r\n";
byte[] endBoundary = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n");
/*foreach (string key in stringDict.Keys)
{
string s = string.Format(stringKeyHeader, key, stringDict[key]);
request.Append(s);
}*/
string fileKeyName = "imgfile";
/*const string filePartHeader =
"Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n"+
"Content-Type: application/octet-stream\r\n\r\n";*/
/*const string filePartHeader =
"Content-Disposition: attachment; name=\"{0}\"; filename=\"{1}\"\r\n" +
"Content-Type:image/jpg\r\nContent-Transfer-Encoding: binary\r\n\r\n";*/
const string filePartHeader =
"Content-Disposition:form-data;name=\"{0}\";filename=\"{1}\"\r\n" +
"Content-Type:image/jpg\r\n\r\n";
var header = string.Format(filePartHeader, fileKeyName, filePath);
request.Append(beginBoundary);
request.Append(header);
//request.Append("Content-Type:image/jpg");
byte[] requestbytes = Encoding.UTF8.GetBytes(request.ToString());
requestStream.Write(requestbytes,0,requestbytes.Length);
requestStream.Flush();
this.Dispatcher.BeginInvoke(() =>
{
textBlock1.Text = request.ToString();
});
byte[] transfer = null;
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
IsolatedStorageFileStream fileStream = new IsolatedStorageFileStream(filePath, System.IO.FileMode.Open,isf);
//var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
transfer = new byte[fileStream.Length];
int transferRead;
if((transferRead = fileStream.Read(transfer, 0, transfer.Length)) != 0)
{
requestStream.Write(transfer, 0, transfer.Length);
requestStream.Flush();
}
/* this.Dispatcher.BeginInvoke(() =>
{
textBlock1.Text =transferRead.ToString();
});*/
}
requestStream.Write(endBoundary, 0, endBoundary.Length);
/*this.Dispatcher.BeginInvoke(() =>
{
textBlock1.Text =endBoundary.Length.ToString();
});*/
requestStream.Flush();
requestStream.Close();
req.BeginGetResponse(HttpGetResponseCallback, req);
}
private void HttpGetResponseCallback(IAsyncResult result)
{
var req = result.AsyncState as HttpWebRequest;
var resp = req.EndGetResponse(result);
var strm = resp.GetResponseStream();
var reader = new StreamReader(strm);
string str1 = reader.ReadToEnd();
char[] str2 = new char[str1.Length];
for (int i = 0, j = 0; i < str1.Length - 1; i++, j++)
{
if (str1[i] == '\\' && str1[i + 1] == 'u')
{
str2[j] = (char)Convert.ToInt32(str1.Substring(i + 2, 4), 16);
i = i + 5;
}
else
{
str2[j] = str1[i];
}
}
string str3 = new string(str2);
this.Dispatcher.BeginInvoke(() =>
{
textBlock1.Text = str3;
});
}
--------------------编程问答-------------------- 代码有bug --------------------编程问答-------------------- 报什么异常，异常信息贴出来。 --------------------编程问答-------------------- 看下这个类， http://www.silverlightchina.net/html/zhuantixilie/winphone7/2011/0419/7026.html --------------------编程问答-------------------- 代码有问题。。。。。。 --------------------编程问答-------------------- 跟踪一下啊，，，这么长的代码，看都不想看了，问问题最好能简短说明问题，最好，
补充：移动开发 , Windows Phone
