private void GetMap2(HttpContext context)
{
HttpRequest req = context.Request;
HttpResponse resp = context.Response;
string docName = req.QueryString["mapDoc"];
string mapName = req.QueryString["mapName"];
string strwidth = req.QueryString["width"];
string metadataId = req.QueryString["metadataid"];
string classpath = req.QueryString["classpath"];
string strlevel = req.QueryString["level"];
string strrow = req.QueryString["row"];
string strcol = req.QueryString["col"];
if (strlevel == null || strcol == null || strrow == null)
{
//
string strbox = req.QueryString["box"];
string strheight = req.QueryString["height"];
strwidth = req.QueryString["width"];
if (strbox != null)
{
string[] tmp = strbox.Split(',');
double xmin = Double.Parse(tmp[0]);
double ymin = Double.Parse(tmp[1]);
double xmax = Double.Parse(tmp[2]);
double ymax = Double.Parse(tmp[3]);
int h = Int32.Parse(strheight);
int w = Int32.Parse(strwidth);
string dcs = GetDCS();
Bitmap bitmap = null;
if (docName != null && mapName != null)
{
bitmap = MapHelper.GetMapByBox(dcs, docName, mapName, xmin, xmax, ymin, ymax, w, h, 256, "Png");
}
if (classpath == null)
{
classpath = req.Form["classpath"];
}
if (classpath != null && metadataId != null)
{
bitmap = MapHelper.GetMetadataMapByBox(dcs, metadataId, classpath, xmin, xmax, ymin, ymax, w, h, 256, "Png");
}
resp.StatusCode = 200;
resp.ContentType = "image/jpeg";
resp.Buffer = true;
bitmap.Save(resp.OutputStream, System.Drawing.Imaging.ImageFormat.Png);
}
return;
}
if (strwidth == null)
{
strwidth = "256";
}
strwidth = "256";
int level = int.Parse(strlevel);
int row = int.Parse(strrow);
int col = int.Parse(strcol);
int size = int.Parse(strwidth);
//获取dws的URL
string soapaddr = GetDCS();
string path = null;
if ((mapName == null || docName == null) && metadataId != null)
{
if (classpath == null)
{
classpath = req.Form["classpath"];
}
if (classpath != null)
{
path = MapHelper.GetMetadataMap(soapaddr, metadataId, classpath, level, row, col, 256, "png");// .GetMap(soapaddr, docName, mapName, level, row, col, size, "png");
}
}
else
{
//path = MapHelper.GetMap(soapaddr, docName, mapName, level, row, col, size, "png");
DWS.dwService dws = new DWS.dwService();
dws.Url = soapaddr;
DWS.MapQuery query = new DWS.MapQuery();
query.format = "png";
query.classPath = "";
query.mapDoc = docName;
query.col = col;
query.row = row;
query.level = (short)level;
query.useTile = true;
query.width = 256;
query.height = 256;
if (mapName == "NULL")
{
query.version = 1;
query.mapName = "";
query.useTile = true;
}
//开始绘制
DWS.MapInfo mi = dws.getMap(query);
//绘制成功
if (mi.isSuccess && mi.image != null)
{
resp.Clear();
resp.ClearHeaders();
resp.ClearContent();
resp.ContentType = "image/jpeg";
resp.Buffer = true;
resp.StatusCode = 200;
System.IO.MemoryStream ms = new System.IO.MemoryStream(mi.image);
Bitmap fullimage = new Bitmap(ms);
fullimage.Save(resp.OutputStream, System.Drawing.Imaging.ImageFormat.Png); //展现图片
ms.Dispose();
return;
}
}
//resp.Clear();
//resp.ClearHeaders();
//resp.ClearContent();
//if (path == null)
//{
// //
// resp.StatusCode = 404;
//}
//else if (path == "empty")
//{
// //
// resp.StatusCode = 204;
//}
//else
//{
// resp.StatusCode = 200;
// resp.WriteFile(path);
//}
//long count = 0;
//string openStr = docName + "|" + mapName;
//try
//{
// if (dataDic.ContainsKey(openStr))
// {
// dataDic.TryGetValue(openStr, out count);
// count++;
// }
// dataDic[openStr] = count;
//}
//catch (Exception countEx)
//{
// dataDic = new System.Collections.Generic.Dictionary<string, long>();
// dataDic.Add(openStr, count);
//}
//string time = DateTime.Now.ToString();
//string respHead = "本次连接状态:" + resp.StatusCode + " " + resp.StatusDescription;
//string remoteIp = req.UserHostAddress;
//string requestData = "请求数据:" + openStr + "\r\n本次服务器开机该数据访问计数:" + count + "\r\n分块编码:" + strlevel + "级 " + strrow + "行 " + strcol + "列";
//string info = time + "\r\n远程用户:" + remoteIp + "\r\n" + requestData + "\r\n" + respHead;
//try
//{
// MapLog.WriteLine(info + "\r\n");
//}
//catch (Exception)
//{
//}
}
//
static public string GetMap(string dwsUrl, string docName, string mapName, int level, int row, int col, int size, string format)
{
string FolderPath = ConfigurationManager.AppSettings["CachePath"].ToString() +
"\\" + size + "\\" + docName + "\\" + mapName + "\\" + level;
string path = FolderPath + "\\" + row + "_" + col + ".png";
//查找缓存
FileInfo f = new FileInfo(path);
if (f.Exists)
{
if (f.Length == 0 || f.Length == 1275)
{
return("empty");
}
return(path);
}
//计算绘制等级，行列号，和范围
int uplevel = UP_LEVLE;
int drawLevel = level - uplevel;
double drawSize = LEVEL0_TILE_SIZE / Math.Pow(2, level);
int drawPixelSize = size;
int drawRow = row;
int drawCol = col;
while (uplevel-- > 0)
{
drawRow /= 2;
drawCol /= 2;
drawSize *= 2;
drawPixelSize *= 2;
}
//构造绘制块Key
string drawKey =
"/DCSMap/" + size +
"/" + docName +
"/" + mapName +
"/" + drawLevel +
"/" + drawRow +
"/" + drawCol;
//
string filepath = null;
//
try
{
LockKey.Lock(drawKey);
//计算范围
double xmin = -180 + (drawCol * drawSize);
double ymin = -90 + (drawRow * drawSize);
double xmax = xmin + drawSize;
double ymax = ymin + drawSize;
//
string box = xmin + "," + ymin + "," + xmax + "," + ymax;
//
DWS.dwService dws = new DWS.dwService();
dws.Url = dwsUrl;
//DWS.MapQuery query = new DWS.MapQuery();
//query.box = box;
//query.format = format;
//query.classPath = "";
//query.mapDoc = docName;
//query.mapName = mapName;
//query.col = -1;
//query.row = -1;
//query.level = 0;
//query.useTile = false;
//query.width = drawPixelSize;
//query.height = drawPixelSize;
DWS.MapQuery query = new DWS.MapQuery();
query.format = "png";
query.classPath = "";
query.mapDoc = docName;
query.mapName = mapName;
query.col = col;
query.row = row;
query.level = (short)level;
query.useTile = true;
query.width = 256;
query.height = 256;
//开始绘制
DWS.MapInfo mi = dws.getMap(query);
//创建文件夹
if (!Directory.Exists(FolderPath))
{
Directory.CreateDirectory(FolderPath);
}
//绘制成功
if (mi.isSuccess && mi.image != null)
{
//开始的行列号
int sRow = drawRow;
int sCol = drawCol;
//瓦块行列数目
int rowNum = 1;
int colNum = 1;
uplevel = UP_LEVLE;
while (uplevel-- > 0)
{
sRow *= 2;
sCol *= 2;
rowNum *= 2;
colNum *= 2;
}
// hack, 850 byte and 6120 byte is empty
if (mi.image.Length == 850 && mi.image.Length == 24072)
{
// 记录缓存
for (int nr = 0; nr < rowNum; ++nr)
{
for (int nc = 0; nc < colNum; ++nc)
{
//string tilepath = FolderPath + "/" + row + "_" + col + ".png";
string tilepath = FolderPath + "/" + (sRow + nr) + "_" + (sCol + nc) + ".png";
FileStream fs = File.Open(tilepath, FileMode.CreateNew);
fs.Close();
}
}
}
else
{
//请求到的图片
MemoryStream stream = new MemoryStream(mi.image);
Bitmap fullimage = new Bitmap(stream);
//
Bitmap bmp = new Bitmap(size, size);
Graphics g = Graphics.FromImage(bmp);
//
Rectangle destRect = new Rectangle(0, 0, size, size);
Rectangle srcRect = new Rectangle(0, 0, size, size);
//分割图片
for (int nr = 0; nr < rowNum; ++nr)
{
for (int nc = 0; nc < colNum; ++nc)
{
g.Clear(System.Drawing.Color.Transparent);
srcRect.X = nc * size;
srcRect.Y = drawPixelSize - (nr * size) - size;
g.DrawImage(fullimage, destRect, srcRect, GraphicsUnit.Pixel);
//
string tilepath = FolderPath + "/" + (sRow + nr) + "_" + (sCol + nc) + ".png";
try
{
File.Delete(tilepath);
bmp.Save(tilepath);
}
catch (Exception)
{
}
}
}
}
filepath = path;
}
else
{
// error
filepath = null;
}
}
catch (Exception)
{
filepath = null;
}
finally
{
LockKey.UnLock(drawKey);
}
return(filepath);
}
