Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/DistanceInfoXML.java @ 5818:a4ff4167be1e
Request feature info on all layers and show it as html if
the server does not return valid gml.
Non queryable layers produce an error message when the request
fails. This is good enough
author | Andre Heinecke <aheinecke@intevation.de> |
---|---|
date | Wed, 24 Apr 2013 17:33:27 +0200 |
parents | bc06a671ef60 |
children |
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package de.intevation.flys.client.server; import java.io.InputStream; import java.io.IOException; import java.io.OutputStream; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.apache.log4j.Logger; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.httpclient.exceptions.ConnectionException; import de.intevation.artifacts.httpclient.http.HttpClient; import de.intevation.artifacts.httpclient.http.HttpClientImpl; import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class DistanceInfoXML extends HttpServlet { private static final Logger logger = Logger.getLogger(DistanceInfoXML.class); public static final String ERROR_NO_DISTANCEINFO_FOUND = "error_no_distanceinfo_found"; public void doGet(HttpServletRequest req, HttpServletResponse resp) { logger.info("DistanceInfoXML.doGet"); String url = getServletContext().getInitParameter("server-url"); String river = req.getParameter("river"); String filter = req.getParameter("filter"); Document doc = XMLUtils.newDocument(); XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( doc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); Element riverEl = ec.create("river"); riverEl.setTextContent(river); doc.appendChild(riverEl); if (filter != null && filter.length() > 0) { Element typeEl = ec.create("filter"); typeEl.setTextContent(filter); riverEl.appendChild(typeEl); } HttpClient client = new HttpClientImpl(url); try { InputStream in = (InputStream) client.callService( url, "distanceinfo", doc, new StreamResponseHandler()); OutputStream out = resp.getOutputStream(); byte[] b = new byte[4096]; int i; while ((i = in.read(b)) >= 0) { out.write(b, 0, i); } out.flush(); out.close(); } catch (ConnectionException ce) { logger.error(ce, ce); } catch (IOException ioe) { logger.error(ioe, ioe); } } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :