Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/MapInfoServiceImpl.java @ 4488:5041105d2edd
Check if response code from GGInA is 200 OK
Only parse the GGInA response if the status code is 200 OK. This improves the
error message if GGInA is not available and shows the real reason instead of a
JDOM error while parsing the response.
author | Björn Ricks <bjoern.ricks@intevation.de> |
---|---|
date | Wed, 14 Nov 2012 10:36:21 +0100 |
parents | bc06a671ef60 |
children | 02cf2b1dff84 |
line wrap: on
line source
package de.intevation.flys.client.server; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.apache.log4j.Logger; import com.google.gwt.user.server.rpc.RemoteServiceServlet; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; import de.intevation.artifacts.httpclient.exceptions.ConnectionException; import de.intevation.artifacts.httpclient.http.HttpClient; import de.intevation.artifacts.httpclient.http.HttpClientImpl; import de.intevation.flys.client.shared.exceptions.ServerException; import de.intevation.flys.client.shared.model.BBox; import de.intevation.flys.client.shared.model.MapInfo; import de.intevation.flys.client.client.services.MapInfoService; /** * This service fetches a document that contains meta information for a specific * chart. * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class MapInfoServiceImpl extends RemoteServiceServlet implements MapInfoService { private static final Logger logger = Logger.getLogger(MapInfoServiceImpl.class); public static final String XPATH_RIVER = "/mapinfo/river/@name"; public static final String XPATH_SRID = "/mapinfo/river/srid/@value"; public static final String XPATH_BBOX = "/mapinfo/river/bbox/@value"; public static final String XPATH_RIVER_WMS = "/mapinfo/river/river-wms/@url"; public static final String XPATH_WMS_URL = "/mapinfo/river/background-wms/@url"; public static final String XPATH_WMS_LAYERS = "/mapinfo/river/background-wms/@layers"; public static final String ERROR_NO_MAPINFO_FOUND = "mapinfo_service_no_result"; public MapInfo getMapInfo(String locale, String river) throws ServerException { logger.info("MapInfoServiceImpl.getMapInfo"); String url = getServletContext().getInitParameter("server-url"); Document request = getRequestDocument(river);; HttpClient client = new HttpClientImpl(url, locale); try { logger.debug("MapInfoServiceImpl.callService"); Document result = client.callService(url, "mapinfo", request); if (result == null) { logger.warn("MapInfo service returned no result."); throw new ServerException(ERROR_NO_MAPINFO_FOUND); } return getMapInfo(result); } catch (ConnectionException ce) { logger.error(ce, ce); } throw new ServerException(ERROR_NO_MAPINFO_FOUND); } public static Document getRequestDocument(String rivername) { logger.debug("MapInfoServiceImpl.getRequestDocument"); Document request = XMLUtils.newDocument(); ElementCreator cr = new ElementCreator(request, null, null); Element root = cr.create("mapinfo"); Element river = cr.create("river"); river.setTextContent(rivername); request.appendChild(root); root.appendChild(river); return request; } public static MapInfo getMapInfo(Document result) { logger.debug("MapInfoServiceImpl.getMapInfo"); String river = XMLUtils.xpathString(result, XPATH_RIVER, null); String sridStr = XMLUtils.xpathString(result, XPATH_SRID, null); String bboxS = XMLUtils.xpathString(result, XPATH_BBOX, null); BBox bbox = BBox.getBBoxFromString(bboxS); String riverWMS = XMLUtils.xpathString(result, XPATH_RIVER_WMS, null); String wmsURL = XMLUtils.xpathString(result, XPATH_WMS_URL, null); String wmsLayers = XMLUtils.xpathString(result, XPATH_WMS_LAYERS, null); int srid = 4326; try { srid = Integer.parseInt(sridStr); } catch (NumberFormatException nfe) { // do nothing } return new MapInfo(river, srid, bbox, riverWMS, wmsURL, wmsLayers); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :