/// <summary>
/// 开始下载文件
/// </summary>
/// <param name="listener">监听下载数量的变化,如果不需要了解实时下载的数量,可以设置为null</param>
/// <returns>已下载文件大小</returns>
public long download(IDownloadProgressListener listener)
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
try
{
using (FileStream fstream = new FileStream(this.saveFile, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite))
{
if (this.fileSize > 0)
{
fstream.SetLength(this.fileSize);
}
fstream.Close();
}
if (this.data.Count != this.threads.Length)
{
this.data.Clear();
for (int i = 0; i < this.threads.Length; i++)
{
this.data.Add(i + 1, 0);//初始化每条线程已经下载的数据长度为0
}
}
for (int i = 0; i < this.threads.Length; i++)
{//开启线程进行下载
long downLength = this.data[i + 1];
if (downLength < this.block && this.downloadSize < this.fileSize)
{//判断线程是否已经完成下载,否则继续下载 +
// Console.WriteLine("threads" + i.ToString() + ",下载块" + this.block.ToString() + " " + this.data[i + 1].ToString() + " " + downloadSize.ToString());
this.threads[i] = new DownloadThread(this, downloadUrl, this.saveFile, this.block, this.data[i + 1], i + 1);
this.threads[i].ThreadRun();
}
else
{
this.threads[i] = null;
}
}
bool notFinish = true; //下载未完成
while (notFinish)
{ // 循环判断所有线程是否完成下载
Thread.Sleep(900);
notFinish = false; //假定全部线程下载完成
for (int i = 0; i < this.threads.Length; i++)
{
if (this.threads[i] != null && !this.threads[i].isFinish())
{ //如果发现线程未完成下载
notFinish = true; //设置标志为下载没有完成
if (this.threads[i].getDownLength() == -1)
{ //如果下载失败,再重新下载
this.threads[i] = new DownloadThread(this, downloadUrl, this.saveFile, this.block, this.data[i + 1], i + 1);
this.threads[i].ThreadRun();
}
}
}
if (listener != null)
{
listener.OnDownloadSize(this.downloadSize);//通知目前已经下载完成的数据长度
// Console.WriteLine(this.downloadSize);
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
throw new Exception("下载文件失败");
}
if (downloadSize == fileSize)
{
try { File.Move(saveFile, saveFile.Replace(".Square", "")); } catch (Exception) { File.Delete(saveFile); }
}
return(this.downloadSize);
}
/// <summary>
/// 开始下载文件
/// </summary>
/// <param name="listener">监听下载数量的变化,如果不需要了解实时下载的数量,可以设置为null</param>
/// <returns>已下载文件大小</returns>
public long DownloadAction(IDownloadProgressListener listener)
{
try
{
using (FileStream fstream = new FileStream(this.saveFile, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite))
{
if (this.fileSize > 0)
{
fstream.SetLength(this.fileSize);
}
fstream.Close();
}
if (this.data.Count != this.threads.Length)
{
this.data.Clear();
for (int i = 0; i < this.threads.Length; i++)
{
this.data.Add(i + 1, 0);//初始化每条线程已经下载的数据长度为0
}
}
//for (int i = 0; i < this.threads.Length; i++)//开启线程进行下载
//{
// long downLength = this.data[i + 1];
// if (downLength < this.block && this.downloadSize < this.fileSize)//判断线程是否已经完成下载,否则继续下载 +
// {
// this.threads[i] = new DownloadThread(this, downloadUrl, this.saveFile, this.block, this.data[i + 1], i + 1);
// this.threads[i].ThreadRun();
// }
// else
// {
// this.threads[i] = null;
// }
//}
bool notFinish = true; //下载未完成
while (notFinish) // 循环判断所有线程是否完成下载,（可以加事件监听？？）
{
Thread.Sleep(900);
notFinish = false;//假定全部线程下载完成
for (int i = 0; i < this.threads.Length; i++)
{
if (this.threads[i] != null)//如果发现线程未完成下载
{
if (!this.threads[i].IsFinish())
{
notFinish = true; //设置标志为下载没有完成
if (this.threads[i].GetDownLength() == -1) //如果下载失败,再重新下载
{
this.threads[i] = new DownloadThread(this, downloadUrl, this.saveFile, this.block, this.data[i + 1], i + 1);
this.threads[i].ThreadRun();
}
}
else
{
this.threads[i] = null;
}
}
}
if (listener != null)
{
listener.OnDownloadSize(this.downloadSize);//通知目前已经下载完成的数据长度
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
throw new Exception("下载文件失败");
}
return(this.downloadSize);
}
