public void Download(int from, int to, string sid, string qid)
{
CookieCollection cookies = new CookieCollection();
Downloader downloader = new Downloader(sid, qid, cookies);
if (to - from + 1 > 500)
{
for (int i = from; i < to+1; i += 500)
{
if (i + 500> to)
{
SaveFile(downloader, to - from + 1, i, to);
}
else
{
SaveFile(downloader, to - from + 1, i, i + 499);
}
}
}
}
/// <summary>
/// 保存文件
/// </summary>
/// <param name="downloader"></param>
/// <param name="total">需要保存的文件总数</param>
/// <param name="from"></param>
/// <param name="to"></param>
/// <returns></returns>
private bool SaveFile(Downloader downloader, int total, int from, int to)
{
string filepath = Path.Combine(tbxFolder.Text.Trim(), GetFileName(from, to));
try
{
using (StreamWriter writer = new StreamWriter(filepath, false, Encoding.Default))
{
writer.Write(downloader.DownloadData(from, to));
writer.Flush();
writer.Close();
}
AddCurrentCount(to - from + 1);
Func<bool> report = () =>
{
ReportProcess();
return true;
};
this.Invoke(report);
return true;
}
catch (IOException)
{
return false;
}
}
public void DownloadFiles()
{
Item item = null;
Func<bool> report = () =>
{
Report();
return true;
};
Func<string, bool> addMessage = (message) =>
{
AddMessage(message);
return true;
};
while ((item = GetItemFromQueue()) != null)
{
CookieCollection cookies = new CookieCollection();
Downloader downloader = new Downloader(Sid, Qid, cookies);
if (DownloadFile(downloader, item))
{
//文件报告
AddCurrentCount(item.Count);
this.Invoke(report);
this.Invoke(addMessage, string.Format("[{0}]:{1}-{2}-{3}.txt 文件下载完成", DateTime.Now, item.From, item.To, item.Count));
}
else
{
AddQueue(item);
//文件报告
}
}
}
void Download()
{
int from = 0;
int to = 0;
int total = 0;
int.TryParse(tbxFrom.Text, out from);
int.TryParse(tbxTo.Text, out to);
int.TryParse(tbxTotalCount.Text, out total);
if (to - from + 1 <= total && from <= total && to <= total && from <= to)
{
TotalCount = to - from + 1;
if (to - from + 1 > 500)
{
Task task = new Task(() =>
{
DownloadAll(from, to, tbxSID.Text.Trim(), tbxQueryid.Text.Trim());
});
task.Start();
Task.WaitAll(task);
AddLog("下载完成");
}
else
{
CookieCollection cookies = new CookieCollection();
Downloader downloader = new Downloader(tbxSID.Text, tbxQueryid.Text, cookies);
SaveFile(downloader, to - from + 1, from, to);
AddLog("下载完成");
}
}
}
public bool DownloadFile(Downloader downloader, Item item)
{
string filepath = Path.Combine(tbxFolder.Text.Trim(), GetFileName(item));
try
{
using (StreamWriter writer = new StreamWriter(filepath, false, Encoding.Default))
{
downloader.PostContent = outbountserviceString;
writer.Write(downloader.DownloadData(item.From, item.To));
writer.Flush();
writer.Close();
System.Threading.Thread.Sleep(ThreadSleepTime);
}
return true;
}
catch (IOException)
{
return false;
}
catch (WebException) {
return false;
}
}