Mercurial > dive4elements > river
diff flys-client/src/main/java/de/intevation/flys/client/server/DischargeInfoXML.java @ 1600:67468c90ca68
Added service to request discharge infos at a specific gauge.
flys-client/trunk@3938 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Raimund Renkert <raimund.renkert@intevation.de> |
---|---|
date | Mon, 06 Feb 2012 16:01:22 +0000 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/server/DischargeInfoXML.java Mon Feb 06 16:01:22 2012 +0000 @@ -0,0 +1,82 @@ +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:raimund.renkert@intevation.de">Raimund Renkert</a> + */ +public class DischargeInfoXML +extends HttpServlet +{ + private static final Logger logger = Logger.getLogger(DischargeInfoXML.class); + + + public static final String ERROR_NO_DISTANCEINFO_FOUND = + "error_no_dischargeinfo_found"; + + + public void doGet(HttpServletRequest req, HttpServletResponse resp) { + logger.info("DischargeInfoXML.doGet"); + + String url = getServletContext().getInitParameter("server-url"); + + String gauge = req.getParameter("gauge"); + + Document doc = XMLUtils.newDocument(); + + XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( + doc, + ArtifactNamespaceContext.NAMESPACE_URI, + ArtifactNamespaceContext.NAMESPACE_PREFIX); + + Element gaugeEl = ec.create("gauge"); + gaugeEl.setTextContent(gauge); + + doc.appendChild(gaugeEl); + + HttpClient client = new HttpClientImpl(url); + + try { + InputStream in = (InputStream) client.callService( + url, "dischargeinfo", 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 :