/// <summary>
/// 获取已上传文件大小
/// </summary>
/// <param name="localFileFullPathName">本地文件全路径</param>
/// <returns></returns>
public static long getFileSize(FileInfo fileInfo)
{
string uri = HashUtils.getFileUri(fileInfo.FullName);
Console.WriteLine("-------------文件在服务器的地址 uri: " + uri);
// 根据uri创建FtpWebRequest对象
var request = getFtpWebRequest(new Uri(uri), WebRequestMethods.Ftp.GetFileSize);
try
{
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
long filesize = response.ContentLength;
return(filesize);
}
catch (Exception ex)
{
return(0);
}
}
/// <summary>
/// 上传文件到FTP服务器(断点续传)
/// </summary>
/// <param name="localFullPath">本地文件对象</param>
/// <param name="remoteDirPath">远程文件夹路径</param>
/// <param name="fileProgressAction">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param>
/// <returns></returns>
public static void uploadFile(FileInfo fileInfo,
Action <double> fileProgressAction = null,
Action <double> speedAction = null,
Action <DateTime> timeAction = null,
Action <double> dirProgressAction = null)
{
//比较已上传大小
long fileSize = (long)fileInfo.Length;
uploadedFileSize = getFileSize(fileInfo);
// Console.Out.WriteLine(initialSize);
// Console.Out.WriteLine("initialSize:" + initialSize);
//如果ftp服务器上文件大小已超过本地文件大小，返回false
if (uploadedFileSize > fileSize)
{
return;
}
//初始化进度条
if (dirProgressAction != null)
{
curUploadedDirSize += uploadedFileSize;
dirProgressAction((double)curUploadedDirSize / (double)dirSize);
//dbAction(curUploadedDirSize);
//文件已上传完毕
if (uploadedFileSize == fileSize)
{
return;
}
}
//请求设置
string uri = HashUtils.getFileUri(fileInfo.FullName);
var request = getFtpWebRequest(new Uri(uri), WebRequestMethods.Ftp.AppendFile);
// 上传文件时通知服务器文件的大小
request.ContentLength = fileInfo.Length;
//缓存和流设置
int bufferSize = 1048576;// 缓冲大小设置为2kb
byte[] buffer = new byte[bufferSize];
using (FileStream fileStream = fileInfo.OpenRead())
{
fileStream.Seek(uploadedFileSize, 0);
using (Stream uploadStream = request.GetRequestStream())
{
while (true)
{
int blockSize = fileStream.Read(buffer, 0, bufferSize);
if (blockSize == 0)
{
break;
}
// 把内容从file stream 写入 upload stream
uploadStream.Write(buffer, 0, blockSize);
uploadedFileSize += blockSize;
curUploadedDirSize += blockSize;
//当时间间隔>1000ms,更新进度
DateTime curTime = DateTime.Now;
TimeSpan timespan = curTime.Subtract(prevTime);
if (timespan.TotalMilliseconds > 1000)
{
prevTime = curTime;
//更新进度
if (fileProgressAction != null)
{
fileProgressAction((double)uploadedFileSize / (double)fileSize);//更新进度条
}
if (speedAction != null)
{
speedAction((double)(curUploadedDirSize - prevUploadedDirSize) / (double)(timespan.TotalMilliseconds) * 1000.0);
}
if (timeAction != null)
{
var speed = (double)(curUploadedDirSize - prevUploadedDirSize) / (double)(timespan.TotalMilliseconds) * 1000.0;
var seconds = (dirSize - curUploadedDirSize) / speed;
DateTime remainTime = Convert.ToDateTime("1900-01-01 00:00:00");
remainTime = remainTime.AddSeconds(seconds);
timeAction(remainTime);
}
if (dirProgressAction != null)
{
dirProgressAction((double)curUploadedDirSize / (double)dirSize);
}
prevUploadedDirSize = curUploadedDirSize;
}
}
}
}
#region 文件传输完成后UI操作
/*
* if (fileProgressAction != null)
* //单文件上传进度更新为1
* fileProgressAction(1.0);
* if (speedAction != null)
* //上传速度更新为0
* speedAction(0.0);
*/
#endregion
}