C#http发送⽂件和接收⽂件的代码。
//客户端发送⽂件
static void Main(string[] args)
{
Upload_Request("192.168.0.4:8099/WebService/AndroidProcessRequest.aspx", @"E:\vid20140213160351.zip", @"E:\vid20140213160351.zip");        }
private static int Upload_Request(string address, string fileNamePath, string saveName)
{
int returnValue = 0;
// 要上传的⽂件
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.ReadWrite,FileShare.ReadWrite);
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;
try
{
//每次上传4k
int bufferLength = 4096;
byte[] buffer = new byte[bufferLength];
//已上传的字节数
long offset = 0;
//开始上传时间
DateTime startTime = DateTime.Now;
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);
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();
StreamReader sr = new StreamReader(s);
//读取服务器端返回的消息
String sReturnString = sr.ReadLine();
s.Close();
sr.Close();
if (sReturnString == "Success")
{
returnValue = 1;
}
else if (sReturnString == "Error")
{
returnValue = 0;
getsavefilename}
}
catch (Exception ex)
{
returnValue = 0;
}
finally
{
fs.Close();
r.Close();
}
return returnValue;
}
//接收⽂件 aspx挂在iis上能⾃动调⽤该类
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
context.Response.Write("id = " + context.Request.Form["id"]
+ ", name = " + context.Request.Form["name"]
+ ", count = " + context.Request.Files.Count);
long filelegth = long.Parse(context.Request.Form["id"]);
//WritetoLog("1");
for (int i = 0; i < context.Request.Files.Count; i++)
{
try
{
HttpPostedFile aFile = context.Request.Files[i];
Stream mystream = aFile.InputStream;
//FileStream fs = (FileStream)aFile.InputStream;
//FileStream fs = new FileStream(aFile.FileName, FileMode.Open);
FileStream fs;
/
/FileStream fs = new FileStream(aFile.FileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);                long lStartPos = 0;
WritetoLog(aFile.FileName);
if (aFile.ContentLength == 0 || String.IsNullOrEmpty(aFile.FileName))
continue;
string displayFileName = Path.GetFileName(aFile.FileName);
string realFileName = @"D:\" + displayFileName;  //真實路徑
// WritetoLog(realFileName);
if (System.IO.File.Exists(realFileName))
{
WritetoLog("111111*********");
fs = File.Open(realFileName, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
lStartPos = fs.Length;
fs.Seek(lStartPos, System.IO.SeekOrigin.Current); //移动⽂件流中的当前指针
}
else
{
WritetoLog("22222222222222");
fs = new System.IO.FileStream(realFileName, System.IO.FileMode.Create);
lStartPos = 0;
}
byte[] nbytes = new byte[512];
int nReadSize = 0;
nReadSize = mystream.Read(nbytes, 0, 512);
while (nReadSize > 0)
{
fs.Write(nbytes, 0, nReadSize);
nReadSize = mystream.Read(nbytes, 0, 512);
}
if (filelegth == fs.Length)
{
}
fs.Close();
mystream.Close();
/
/Console.WriteLine("下载完成");
//aFile.SaveAs(realFileName);
//DownloadFile(context, realFileName, 10);            }
catch (Exception ex)
{
WritetoLog(ex.ToString());
}
}
}

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