import com.vividsolutions.jts.operation.valid.TopologyValidationError; //导入依赖的package包/类
/**
 * Check JTS Footprint validity
 */
public static boolean checkJTSFootprint (String footprint)
{
   try
   {
      WKTReader wkt = new WKTReader();
      Geometry geom = wkt.read(footprint);
      IsValidOp vaildOp = new IsValidOp(geom);
      TopologyValidationError err = vaildOp.getValidationError();
      if (err != null)
      {
         throw new IllegalParameterException(err.getMessage());
      }
      return true;
   }
   catch (Exception e)
   {
      LOGGER.error("JTS Footprint error : " + e.getMessage());
      return false;
   }
}
 

import com.vividsolutions.jts.operation.valid.TopologyValidationError; //导入依赖的package包/类
public void testCountryBoundariesGeoJson() throws IOException
{
	String geoJson = StreamUtils.readToString(getContext().getAssets().open("countryBoundaries.json"));
	GeometryCollection countriesBoundaries = (GeometryCollection) new GeoJsonReader().read(geoJson);
	for(int i = 0; i < countriesBoundaries.getNumGeometries(); ++i)
	{
		Geometry countryBoundary = countriesBoundaries.getGeometryN(i);
		Map<String,String> props = (Map<String,String>) countryBoundary.getUserData();

		TopologyValidationError err = new IsValidOp(countryBoundary).getValidationError();
		if(err != null) {
			String countryCode = props.get("ISO3166-1:alpha2");
			if(countryCode == null) countryCode = props.get("ISO3166-2");
			fail("" + countryCode + ": " + err.toString());
		}
	}
}