Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/DischargeTablesServiceImpl.java @ 5622:b28a6d05e969
Add a new mechanism in mapfish print call to add arbitary data maps
Data properties are identified by starting with mapfish-data
and they are then split in info value pairs where info
can be the description of the information and value the value
of the information to be transported in the data map.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Tue, 09 Apr 2013 19:04:32 +0200 |
parents | 6ae99d996f79 |
children |
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package de.intevation.flys.client.server; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.text.DateFormat; import java.util.Date; import java.util.Locale; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.httpclient.http.HttpClient; import de.intevation.artifacts.httpclient.http.HttpClientImpl; import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler; public class DischargeTablesServiceImpl extends HttpServlet { private static final Logger logger = Logger .getLogger(DischargeInfoServiceImpl.class); private static final DateFormat DATE_FORMAT = DateFormat.getDateInstance( DateFormat.MEDIUM, Locale.GERMANY); public void doGet(HttpServletRequest req, HttpServletResponse resp) { logger.info("ChartOutputServiceImpl.doGet"); String url = getServletContext().getInitParameter("server-url"); String locale = req.getParameter("locale"); prepareHeader(req, resp); Document requestDoc = createRequestDoc(req); HttpClient client = new HttpClientImpl(url, locale); try { OutputStream out = resp.getOutputStream(); InputStream stream = (InputStream) client.callService(url, "dischargetablesoverview", requestDoc, new StreamResponseHandler()); byte[] b = new byte[4096]; try { int i; while ((i = stream.read(b)) >= 0) { out.write(b, 0, i); } } finally { stream.close(); } } catch (IOException ioe) { logger.error("Error while fetching discharge tables chart!", ioe); } } protected void prepareHeader(HttpServletRequest req, HttpServletResponse resp) { resp.setHeader("Content-Type", "image/png"); } protected Document createRequestDoc(HttpServletRequest req) { Document request = XMLUtils.newDocument(); XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(request, null, null); Element service = creator.create("service"); Element gauge = creator.create("gauge"); Element extent = creator.create("extent"); Element format = creator.create("format"); Element timerange = creator.create("timerange"); creator.addAttr(gauge, "name", extractRequestGauge(req)); creator.addAttr(extent, "width", extractRequestWidth(req)); creator.addAttr(extent, "height", extractRequestHeight(req)); creator.addAttr(format, "type", extractRequestFormat(req)); creator.addAttr(timerange, "lower", extractRequestLowerTime(req)); creator.addAttr(timerange, "upper", extractRequestUpperTime(req)); request.appendChild(service); service.appendChild(gauge); service.appendChild(extent); service.appendChild(format); service.appendChild(timerange); return request; } protected String extractRequestGauge(HttpServletRequest req) { return req.getParameter("gauge"); } protected String extractRequestWidth(HttpServletRequest req) { return req.getParameter("width"); } protected String extractRequestHeight(HttpServletRequest req) { return req.getParameter("height"); } protected String extractRequestFormat(HttpServletRequest req) { return req.getParameter("format"); } protected String extractRequestLowerTime(HttpServletRequest req) { String lowerStr = req.getParameter("lower"); try { long lowerMillis = Long.parseLong(lowerStr); Date lower = new Date(lowerMillis); return DATE_FORMAT.format(lower); } catch (NumberFormatException nfe) { logger.warn("Cannot parse time millies.", nfe); } return null; } protected String extractRequestUpperTime(HttpServletRequest req) { String upperStr = req.getParameter("upper"); try { long upperMillis = Long.parseLong(upperStr); Date upper = new Date(upperMillis); return DATE_FORMAT.format(upper); } catch (NumberFormatException nfe) { logger.warn("Cannot parse time millies.", nfe); } return null; } }