MemoryStream DoRequest(Uri uri, DownModel dm)
{
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(uri);
webRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
webRequest.Headers.Add("Accept-Encoding", "gzip, deflate, sdch");
webRequest.Headers.Add("Accept-Language", "zh-CN,zh;q=0.8");
webRequest.Headers.Add("Cache-Control", "max-age=0");
webRequest.KeepAlive = true;
webRequest.Headers.Add("DNT", "1");
webRequest.Host = "mt0.google.cn";
//webRequest.Headers.Add("Pragma", "no-cache");
webRequest.UserAgent =
@"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/28.0.1500.95 Safari/537.36 SE 2.X MetaSr 1.0";
//webRequest.Headers.Add("X-Client-Data", "CJW2yQEIpbbJAQiptskBCMS2yQEI7ojKAQ==");
WebResponse webResponse = webRequest.GetResponse();
Stream stream = webResponse.GetResponseStream();
MemoryStream ms = new MemoryStream();
byte[] buffBytes = new byte[1000];
int len = 0;
while (true)
{
len = stream.Read(buffBytes, 0, 1000);
if (len > 0)
{
ms.Write(buffBytes, 0, len);
}
else
{
break;
}
}
return ms;
}
void DownCompleteProcess(DownModel dm)
{
try
{
downcount++;
if (downcount % 20 == 0)
{
if (downcount % 500 == 0)
{
if (dm.x > saveInfo.stopx)
{
saveInfo.stopx = dm.x;
}
if (dm.y > saveInfo.stopy)
{
saveInfo.stopy = dm.y;
}
//File.WriteAllText(saveInfo.savepath + "/saveinfo.inf",
//saveInfo.level + "," + saveInfo.stopx + "," + saveInfo.stopy);
}
OnPrecessEvent(downcount);
}
//完成下载 触发事件
if (urls.Count > 0 && NextQuery())
{
}
else
{
lock (tc)
{
if (tc.allThreadNumber > 0)
{
tc.allThreadNumber--;
OnPrecessStatuEvent("线程完成 剩余:" + tc.allThreadNumber);
if (dm.x > saveInfo.stopx)
{
saveInfo.stopx = dm.x;
}
if (dm.y > saveInfo.stopy)
{
saveInfo.stopy = dm.y;
}
if (tc.allThreadNumber == 0)
{
OnPrecessStatuEvent("线程全部完成 触发完成事件");
downisRun = false;
//File.WriteAllText(saveInfo.savepath + "/saveinfo.inf",
// saveInfo.level + "," + saveInfo.stopx + "," + saveInfo.stopy);
OnCompleteEvent(downcount, isMulSave);
}
}
else
{
OnPrecessStatuEvent("线程全部完成");
}
}
}
}
catch (Exception ex)
{
DownStop();
onprecessStatu(ex.Message + " " + ex.StackTrace);
}
}
/// <summary>
/// 创建队列方法
/// </summary>
/// <param name="startx"></param>
/// <param name="starty"></param>
/// <param name="endx"></param>
/// <param name="endy"></param>
/// <param name="zoom"></param>
/// <param name="mt"></param>
private void CreateQueue(int startx, int starty, int endx, int endy,
int zoom, MapType mt,
int passstartx, int passstarty, int passendx, int passendy)
{
try
{
if (passendx == 0)
{
passendx = endx;
}
if (passendy == 0)
{
passendy = endy;
}
inputqueuecount = 0;
while (addqueueisRun)
{
if (passstartx <= endx || passstarty <= endy)
{
if (urls.Count < 100)
{
OnPrecessStatuEvent("队列不足200 继续创建。" + urls.Count);
onprecessStatu("创建队列 开始于" + passstartx + "X" + passstarty);
Zoom zm = zoomlevel.GetLevel(zoom, mt);
if (endx > zm.maxX || endy > zm.maxY)
{
return;
}
string url = "";
int partnum = 0;
string partDoc = "";
lock (urls)
{
for (int x = startx; x <= endx; x++)
{
for (int y = starty; y <= endy; y++)
{
if (passstartx > 0)
{
x = passstartx;
passstartx = 0;
}
if (passstarty > 0)
{
y = passstarty;
passstarty = 0;
}
url = zm.url.Replace("@X", x.ToString()).Replace("@Y", y.ToString());
DownModel dm = new DownModel();
dm.Url = url;
dm.x = x;
dm.y = y;
partnum = (int)Math.Floor((double)((double)(x + 1) * (double)(zm.maxY + 1) / 1000));
//计算分部文件夹编号
partDoc = saveInfo.savepath + "/" + _zoom + "/" + _zoom + "_" + partnum;
if (!Directory.Exists(partDoc))
{
Directory.CreateDirectory(partDoc);
}
dm.Fielname = partDoc + "/" + _zoom + "_" + x + "_" + y + ".png";
urls.Enqueue(dm);
inputqueuecount++;
if (x == passendx && y == passendy)
{
}
if (x == passendx && y == passendy)
{
//开始数大于结束数 停止队列
passstartx = endx + 1;
passstarty = endy + 1;
x = endx + 1;//设置x值大于截止值 则下次循环将不执行
y = endy + 1;
onprecessStatu("队列 x y 等于结束数 " + passendx + "x" + passendy);
if (inputqueuecount <= 100 && downisRun == false)
{
BeginDown();//开始下载
}
}
else
{
if (urls.Count > 100 && downisRun == false)
{
BeginDown();//开始下载
}
if (urls.Count > 200)
{
passstartx = x;
passstarty = y;
onprecessStatu("队列 " + urls.Count + " 停止入列。" + passstartx + "X" + passstarty + " 入列总数" + inputqueuecount);
x = endx + 1;//设置x值大于截止值 则下次循环将不执行
y = endy + 1;
}
}
}
}
}
}
else
{
Thread.Sleep(1000);
}
}
else
{
addqueueisRun = false;
onprecessStatu("队列 创建完成 停止入列。" + passstartx + "X" + passstarty + " 入列总数" + inputqueuecount);
}
}
}
catch (Exception ex)
{
onprecessStatu(ex.Message + " " + ex.StackTrace);
}
}