客户端代码：
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/// <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>服务器反馈信息</returns>
private
string
Upload_Request(
string
address,
string
fileNamePath,
string
saveName)
{
// 要上传的文件
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【重要、关键】
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);
offset += size;
TimeSpan span = DateTime.Now - startTime;
//1024*1024=1048576
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
serverMsg = sr.ReadLine();
s.Close();
sr.Close();
}
catch
(Exception ex)
{
}
finally
{
fs.Close();
r.Close();
}
return
""
;
}
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服务端：
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1
2
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HttpPostedFileBase file = Request.Files[0];
file.SaveAs(Server.MapPath(
"~/file/k.iso"
));
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客户端调用：
Upload_Request("http://localhost:7115/test/index", "d:\\t.rar", "kk");