/// <summary>
/// 上传文件
/// </summary>
/// <param name="url">http的访问地址</param>
/// <param name="filePath">文件绝对路径</param>
/// <param name="filePath">文件到服务器后的名字</param>
/// <param name="filedName">上传时的文件参数名称</param>
/// <param name="parameter">其他参数信息</param>
/// <param name="d">上传回调代理</param>
/// <returns></returns>
public static string UploadFileRequest(string url, string filePath, string fileName, string filedName, NameValueCollection parameter = null, FileUploadDelegate d = null)
{
String paramString = "";
if (parameter != null && parameter.Count > 0)
{
foreach (string key in parameter.Keys)
{
paramString += key + "=" + parameter[key] + "&";
}
paramString = paramString.Substring(0, paramString.Length - 1);
url += "?" + paramString;
}
logger.Debug("url=" + url + ", param=" + paramString);
DateTime startTime = DateTime.Now;
string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
byte[] endBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
long fileLength = fs.Length;
//请求头部信息
StringBuilder headerBuilder = new StringBuilder();
headerBuilder.Append("--" + boundary + "\r\n");
headerBuilder.Append("Content-Disposition: form-data; name=\"" + filedName + "\"; filename=\"" + fileName + "\"\r\n");
headerBuilder.Append("Content-Type: application/octet-stream");
headerBuilder.Append("\r\n");
headerBuilder.Append("\r\n");
string headerString = headerBuilder.ToString();
byte[] headerBytes = Encoding.UTF8.GetBytes(headerString);
long length = fs.Length + headerBytes.Length + endBytes.Length;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(url));
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)";
request.Method = "POST";
request.AllowWriteStreamBuffering = false;
request.Timeout = 300000;
request.ContentType = "multipart/form-data; boundary=" + boundary;
request.ContentLength = length;
Stream postStream = request.GetRequestStream();
//写入http头
postStream.Write(headerBytes, 0, headerBytes.Length);
//写入文件
int bufferLength = 4096;
byte[] buffer = new byte[bufferLength];
long offset = 0;
int size = 0;
TimeSpan span = DateTime.Now - startTime;
double percent = 0;
double second = span.TotalSeconds;
double speed = 0;
double interval = 0;
String info = "";
while ((size = br.Read(buffer, 0, bufferLength)) > 0)
{
postStream.Write(buffer, 0, size);
offset += size;
span = DateTime.Now - startTime;
percent = (offset * 1.0 / fileLength);
second = span.TotalSeconds;
speed = (offset / second);
info = second.ToString("F2") + "秒 " + NumberUtil.ConversionUnitMemory(speed) + "/秒 " + (percent * 100.0).ToString("F2") + "%";
if (d != null && second - interval > 0.5)
{
interval = second;
d.Invoke(percent, second, speed, info);
}
}
//添加尾部
postStream.Write(endBytes, 0, endBytes.Length);
span = DateTime.Now - startTime;
second = span.TotalSeconds;
percent = 1;
speed = (fileLength / second);
info = second.ToString("F2") + "秒 " + NumberUtil.ConversionUnitMemory(speed) + "/秒 " + (percent * 100.0).ToString("F2") + "%";
if (d != null)
{
d.Invoke(percent, second, speed, info);
}
//读取返回
StreamReader sr = new StreamReader(request.GetResponse().GetResponseStream());
string returnValue = sr.ReadLine();
sr.Close();
br.Close();
fs.Close();
postStream.Close();
return(returnValue);
}
/// <summary>
///
/// </summary>
/// <param name="url">下载的文件http地址</param>
/// <param name="path">文件保存的绝对路径</param>
/// <param name="d">下载过程回调</param>
/// <returns></returns>
public static bool DownFileRequest(string url, string path, FileDownloadDelegate d = null)
{
logger.Debug("DownFileRequest - url=" + url + ", path=" + path);
if (!FileUtil.CreateDirectory(Path.GetDirectoryName(path)))
{
throw new DirectoryNotFoundException();
}
DateTime startTime = DateTime.Now;
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
long contentLength = response.ContentLength;
logger.Debug("DownFileRequest - Start - statusCode=" + response.StatusCode + ", contentLength=" + contentLength + ", date=" + DateUtil.GetNowDate());
if (!HttpStatusCode.OK.Equals(response.StatusCode))
{
return(false);
}
Stream stream = response.GetResponseStream();
FileStream fileStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
long offset = 0;
int size = -1;
byte[] data = new byte[10240];
TimeSpan span = DateTime.Now - startTime;
double percent = 0;
double second = span.TotalSeconds;
double speed = 0;
double interval = 0;
String info = "";
while ((size = stream.Read(data, 0, data.Length)) > 0)
{
fileStream.Write(data, 0, size);
fileStream.Flush();
offset += size;
span = DateTime.Now - startTime;
second = span.TotalSeconds;
percent = (offset * 1.0 / contentLength);
speed = (offset / second);
info = second.ToString("F2") + "秒 " + NumberUtil.ConversionUnitMemory(speed) + "/秒 " + (percent * 100.0).ToString("F2") + "%";
if (d != null && second - interval > 0.5)
{
interval = second;
d.Invoke(percent, second, speed, info);
}
}
span = DateTime.Now - startTime;
second = span.TotalSeconds;
percent = 1;
speed = (contentLength / second);
info = second.ToString("F2") + "秒 " + NumberUtil.ConversionUnitMemory(speed) + "/秒 " + (percent * 100.0).ToString("F2") + "%";
if (d != null)
{
d.Invoke(percent, second, speed, info);
}
fileStream.Close();
stream.Close();
response.Close();
logger.Debug("DownFileRequest - Over - length=" + offset + ", date=" + DateUtil.GetNowDate());
return(true);
}
