调用方法 HttpUploadFile(@"http://localhost:8099/Default.aspx", @"E:\工作记录\2017\2017年06月份工作计划.txt")
/// <summary>
/// 将本地文件上传到指定的服务器(HttpWebRequest方法)
/// </summary>
/// <param name="address">文件上传到的服务器</param>
/// <param name="fileNamePath">要上传的本地文件(全路径)</param>
/// <param name="saveName">文件上传后的名称</param>
/// <returns>成功返回1,失败返回0</returns>
private static string HttpUploadFile(string address, string fileNamePath, string saveName = "")
{
int returnValue = 0;
int pos = fileNamePath.LastIndexOf("\\");
if (saveName == "")
saveName = fileNamePath.Substring(pos + 1);
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
BinaryReader r = new BinaryReader(fs); //时间戳
string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n"); //请求头部信息
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(strBoundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"");
sb.Append("file");
sb.Append("\"; filename=\"");
sb.Append(saveName);
sb.Append("\";");
sb.Append("\r\n");
sb.Append("Content-Type: ");
sb.Append("application/octet-stream");
sb.Append("\r\n");
sb.Append("\r\n");
string strPostHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader); // 根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
httpReq.Method = "POST"; //对发送的数据不使用缓存
httpReq.AllowWriteStreamBuffering = false; //设置获得响应的超时时间(300秒)
httpReq.Timeout = 300000;
httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
long fileLength = fs.Length;
httpReq.ContentLength = length;
string sReturnString = "";
try
{
//每次上传4k
int bufferLength = 4096;
byte[] buffer = new byte[bufferLength];
int size = r.Read(buffer, 0, bufferLength);
Stream postStream = httpReq.GetRequestStream(); //发送请求头部消息
postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
while (size > 0)
{
postStream.Write(buffer, 0, size);
//Application.DoEvents();
size = r.Read(buffer, 0, bufferLength);
}
//添加尾部的时间戳
postStream.Write(boundaryBytes, 0, boundaryBytes.Length);
postStream.Close(); //获取服务器端的响应
WebResponse webRespon = httpReq.GetResponse();
Stream s = webRespon.GetResponseStream();
//读取服务器端返回的消息
StreamReader sr = new StreamReader(s);
sReturnString = sr.ReadLine();
s.Close();
sr.Close();
}
catch(Exception ex)
{
sReturnString = ex.Message;
}
finally
{
fs.Close();
r.Close();
}
return sReturnString;
}
protected void Page_Load(object sender, EventArgs e)
{if (Request.Files.Count > 0)
{
try
{
HttpPostedFile file = Request.Files[0];
string filePath = "E:\\testupform\\" + file.FileName;
file.SaveAs(filePath);
Response.Write("Success");
}
catch
{
Response.Write("上传文件失败");
}
}
else
{
Response.Write("没有上传的文件");
}
Response.End();
}