public override FeatureInfoResponse GetFeatureInfo(Capabilities capabilities, string path, GetFeatureInfo getFeatureInfo)
{
FeatureInfoResponse featureInfoResponse = null;
if (capabilities == null || string.IsNullOrEmpty(path) || getFeatureInfo == null)
{
return(featureInfoResponse);
}
LayerFactory layerFactory = new LayerFactory();
#region 验证getTile参数
GetTile getTile = getFeatureInfo.GetTile;
LayerType layerType = capabilities.GetLayerType(getTile.Layer);
if (layerType == null)
{
return(featureInfoResponse);
}
TileMatrixSet tileMatrixSet = capabilities.GetTileMatrixSet(getTile.TileMatrixSet);
if (tileMatrixSet == null)
{
return(featureInfoResponse);
}
TileMatrix tileMatrix = tileMatrixSet.GetTileMatrix(getTile.TileMatrix);
if (tileMatrix == null)
{
return(featureInfoResponse);
}
BoundingBoxType boundingBoxType = layerType.BoundingBox.FirstOrDefault();
if (boundingBoxType == null)
{
return(featureInfoResponse);
}
bool ret = boundingBoxType.LowerCorner.ToPosition(out double xMin, out double yMin);
if (!ret)
{
return(featureInfoResponse);
}
ret = boundingBoxType.UpperCorner.ToPosition(out double xMax, out double yMax);
if (!ret)
{
return(featureInfoResponse);
}
bool isDegree = tileMatrixSet.GetIsDegreeByLocalDb();
tileMatrix.GetTileIndex(isDegree, xMin, yMax, out int startCol, out int startRow);
int matrixWidth = Convert.ToInt32(tileMatrix.MatrixWidth);
int matrixHeight = Convert.ToInt32(tileMatrix.MatrixHeight);
if (getTile.TileCol < startCol || getTile.TileCol >= startCol + matrixWidth || getTile.TileRow < startRow || getTile.TileRow >= startRow + matrixHeight)
{
return(featureInfoResponse);
}
if (!layerType.Style.Any(x => x.Identifier.Value == getTile.Style))
{
return(featureInfoResponse);
}
#endregion
#region 验证getFeatureInfo参数
int tileWidth = Convert.ToInt32(tileMatrix.TileWidth);
int tileHeight = Convert.ToInt32(tileMatrix.TileHeight);
if (getFeatureInfo.J < 0 || getFeatureInfo.J >= tileHeight || getFeatureInfo.I < 0 || getFeatureInfo.I >= tileWidth)
{
return(featureInfoResponse);
}
#endregion
using (var dataSource = LayerFactory.OpenDataSource(path))
{
if (dataSource == null)
{
return(featureInfoResponse);
}
using (var layer = dataSource.GetLayerByName(getTile.Layer))
{
if (layer == null)
{
return(featureInfoResponse);
}
tileMatrix.GetFeatureInfoBoundary(isDegree, getTile.TileRow, getTile.TileCol, getFeatureInfo.J, getFeatureInfo.I, out double ftInfoXMin, out double ftInfoYMin, out double ftInfoXMax, out double ftInfoYMax);
layer.SetSpatialFilterRect(ftInfoXMin, ftInfoYMin, ftInfoXMax, ftInfoYMax);
FeatureCollectionType featureCollectionType = new FeatureCollectionType();
featureInfoResponse = new FeatureInfoResponse()
{
Item = featureCollectionType
};
var ft = layer.GetNextFeature();
while (ft != null)
{
ft = layer.GetNextFeature();
//todo添加查询的feature
}
}
}
return(featureInfoResponse);
}
private async Task <ActionResult> GetTile(string serviceName, GetTile getTile)
{
ActionResult result = null;
ExceptionReport exception = null;
int statusCode = 200;
#region Validate parameters
if (string.IsNullOrWhiteSpace(serviceName))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "serviceName", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string serviceType = getTile.service;
if (string.IsNullOrWhiteSpace(serviceType))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "service", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (serviceType.ToLower() != "wmts")
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", "version", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string version = getTile.version;
if (string.IsNullOrWhiteSpace(version))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "version", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (version != "1.0.0")
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", "version", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string layerName = getTile.Layer;
if (string.IsNullOrWhiteSpace(layerName))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "layer", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string style = getTile.Style;
if (string.IsNullOrWhiteSpace(style))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "style", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string format = getTile.Format;
if (string.IsNullOrWhiteSpace(format))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "format", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string tileMatrixSet = getTile.TileMatrixSet;
if (string.IsNullOrWhiteSpace(tileMatrixSet))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "tileMatrixSet", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
string tileMatrix = getTile.TileMatrix;
if (string.IsNullOrWhiteSpace(tileMatrix))
{
exception = ExceptionReportHelper.GetExceptionReport("MissingParameterValue", "tileMatrix", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
ServiceRecord serviceRecord = await GetServiceRecord(serviceName, version);
if (serviceRecord == null)
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (!System.IO.File.Exists(serviceRecord.Path))
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
LayerRecord layerRecord = await GetLayerRecord(serviceRecord, layerName);
if (layerRecord == null)
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
#endregion
GetCapabilities getCapabilities = new GetCapabilities(version);
IWmtsService wmts1Service = GetWmts1Service(version);
Capabilities capabilities = wmts1Service.GetCapabilities(serviceRecord.Path, getCapabilities);
if (capabilities == null)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
LayerType layerType = capabilities.GetLayerType(layerRecord.Name);
if (layerType == null)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
if (!layerType.Format.Contains(format))
{
exception = ExceptionReportHelper.GetExceptionReport("InvalidParameterValue", "format", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
if (layerType.TileMatrixSetLink == null || layerType.TileMatrixSetLink.Length == 0)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
string layerTileMatrixSetStr = layerType.TileMatrixSetLink[0].TileMatrixSet;
if (layerTileMatrixSetStr != null)
{
TileMatrixSet layerTileMatrixSet = capabilities.Contents.TileMatrixSet?.FirstOrDefault(x => x.Identifier?.Value == layerTileMatrixSetStr);
if (layerTileMatrixSet != null)
{
TileMatrix layerTileMatrix = layerTileMatrixSet.TileMatrix?.FirstOrDefault(x => x.Identifier.Value == getTile.TileMatrix);
if (layerTileMatrix != null)
{
bool ret = layerTileMatrix.TopLeftCorner.ToPosition(out double left, out double top);
if (!ret)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
BoundingBoxType boundingBoxType = layerType.BoundingBox?.Length > 0 ? layerType.BoundingBox[0] : layerType.WGS84BoundingBox?.Length > 0 ? layerType.WGS84BoundingBox[0] : null;
if (boundingBoxType == null)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
bool ret0 = boundingBoxType.LowerCorner.ToPosition(out double xMin, out double yMin);
bool ret1 = boundingBoxType.UpperCorner.ToPosition(out double xMax, out double yMax);
if (!ret0 || !ret1)
{
exception = ExceptionReportHelper.GetExceptionReport("NoApplicableCode", exceptionText: "Internal server error");
statusCode = 500;
goto Exception;
}
bool isDegree = layerTileMatrixSet.GetIsDegreeByLocalDb();
layerTileMatrix.GetTileIndex(isDegree, xMin, yMax, out int startCol, out int startRow);
int matrixWidth = Convert.ToInt32(layerTileMatrix.MatrixWidth);
int matrixHeight = Convert.ToInt32(layerTileMatrix.MatrixHeight);
if (getTile.TileCol < startCol || getTile.TileCol >= startCol + matrixWidth || getTile.TileRow < startRow || getTile.TileRow >= startRow + matrixHeight)
{
exception = ExceptionReportHelper.GetExceptionReport("TileOutOfRange", exceptionText: "Bad request");
statusCode = 400;
goto Exception;
}
}
}
}
try
{
byte[] tileBuffer = wmts1Service.GetTile(capabilities, layerRecord.Path, getTile);
result = new FileContentResult(tileBuffer, getTile.Format);
}
catch (Exception e)
{
Debug.WriteLine($"获取瓦片{getTile.TileMatrix}_{getTile.TileCol}_{getTile.TileRow}失败:{e.Message}");
}
goto Success;
Exception:
string content = XmlHelper.XmlSerialize(exception, Encoding, null);
result = new ContentResult()
{
StatusCode = statusCode,
Content = content
};
Success:
return(result);
}
public override byte[] GetTile(Capabilities capabilities, string path, GetTile getTile)
{
byte[] buffer = null;
if (capabilities == null || string.IsNullOrEmpty(path) || getTile == null)
{
return(buffer);
}
LayerFactory layerFactory = new LayerFactory();
#region 验证getTile参数
LayerType layerType = capabilities.GetLayerType(getTile.Layer);
if (layerType == null)
{
return(buffer);
}
TileMatrixSet tileMatrixSet = capabilities.GetTileMatrixSet(getTile.TileMatrixSet);
if (tileMatrixSet == null)
{
return(buffer);
}
TileMatrix tileMatrix = tileMatrixSet.GetTileMatrix(getTile.TileMatrix);
if (tileMatrix == null)
{
return(buffer);
}
BoundingBoxType boundingBoxType = layerType.BoundingBox.FirstOrDefault();
if (boundingBoxType == null)
{
return(buffer);
}
bool ret = boundingBoxType.LowerCorner.ToPosition(out double xMin, out double yMin);
if (!ret)
{
return(buffer);
}
ret = boundingBoxType.UpperCorner.ToPosition(out double xMax, out double yMax);
if (!ret)
{
return(buffer);
}
bool isDegree = tileMatrixSet.GetIsDegreeByLocalDb();
tileMatrix.GetTileIndex(isDegree, xMin, yMax, out int startCol, out int startRow);
int matrixWidth = Convert.ToInt32(tileMatrix.MatrixWidth);
int matrixHeight = Convert.ToInt32(tileMatrix.MatrixHeight);
if (getTile.TileCol < startCol || getTile.TileCol >= startCol + matrixWidth || getTile.TileRow < startRow || getTile.TileRow >= startRow + matrixHeight)
{
return(buffer);
}
if (!layerType.Style.Any(x => x.Identifier.Value == getTile.Style))
{
return(buffer);
}
if (!layerType.Format.Contains(getTile.Format))
{
return(buffer);
}
#endregion
using (var layer = layerFactory.OpenLayer(path))
{
if (layer == null)
{
return(buffer);
}
tileMatrix.GetTileBoundary(isDegree, getTile.TileRow, getTile.TileCol, out double tileXMin, out double tileYMin, out double tileXMax, out double tileYMax);
using (Envelope envelope = new Envelope())
{
envelope.MinX = tileXMin;
envelope.MinY = tileYMin;
envelope.MaxX = tileXMax;
envelope.MaxY = tileYMax;
int tileWidth = Convert.ToInt32(tileMatrix.TileWidth);
int tileHeight = Convert.ToInt32(tileMatrix.TileHeight);
Rectangle rectangle = new Rectangle(0, 0, tileWidth, tileHeight);
using (var image = new Image <Rgba32>(rectangle.Width, rectangle.Height))
{
layer.DrawReagion(image, rectangle, envelope, false, null, null);
using (MemoryStream ms = new MemoryStream())
{
string formatName = getTile.Format.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries)[1];
switch (formatName)
{
case "png":
image.SaveAsPng(ms);
break;
case "jpeg":
image.SaveAsJpeg(ms);
break;
default:
return(buffer);
}
buffer = ms.ToArray();
}
}
}
}
return(buffer);
}
