Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/DischargeInfoXML.java @ 5861:172338b1407f

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GWT client: Added copyright header.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:30:15 +0200
parents 5aa05a7a34b7
children ea9eef426962
rev   line source
5861
172338b1407f GWT client: Added copyright header.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.server;
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10
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11 import java.io.InputStream;
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12 import java.io.IOException;
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13 import java.io.OutputStream;
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14
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15 import org.w3c.dom.Document;
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16 import org.w3c.dom.Element;
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17
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18 import org.apache.log4j.Logger;
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19
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20 import javax.servlet.http.HttpServlet;
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21 import javax.servlet.http.HttpServletRequest;
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22 import javax.servlet.http.HttpServletResponse;
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23
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24 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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25 import org.dive4elements.artifacts.common.utils.XMLUtils;
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26
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27 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
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28 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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29 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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30 import org.dive4elements.artifacts.httpclient.http.response.StreamResponseHandler;
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31
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32
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33 /**
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34 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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35 */
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36 public class DischargeInfoXML
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37 extends HttpServlet
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38 {
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39 private static final Logger logger = Logger.getLogger(DischargeInfoXML.class);
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40
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41
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42 public static final String ERROR_NO_DISTANCEINFO_FOUND =
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43 "error_no_dischargeinfo_found";
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44
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45
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46 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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47 logger.info("DischargeInfoXML.doGet");
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48
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49 String url = getServletContext().getInitParameter("server-url");
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50
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51 String gauge = req.getParameter("gauge");
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52
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53 Document doc = XMLUtils.newDocument();
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54
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55 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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56 doc,
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57 ArtifactNamespaceContext.NAMESPACE_URI,
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58 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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59
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60 Element gaugeEl = ec.create("gauge");
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61 gaugeEl.setTextContent(gauge);
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62
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63 doc.appendChild(gaugeEl);
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64
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65 HttpClient client = new HttpClientImpl(url);
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66
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67 try {
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68 InputStream in = (InputStream) client.callService(
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69 url, "dischargeinfo", doc, new StreamResponseHandler());
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70
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71 OutputStream out = resp.getOutputStream();
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72
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73 byte[] b = new byte[4096];
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74 int i;
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75 while ((i = in.read(b)) >= 0) {
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76 out.write(b, 0, i);
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77 }
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78
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79 out.flush();
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80 out.close();
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81 }
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82 catch (ConnectionException ce) {
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83 logger.error(ce, ce);
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84 }
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85 catch (IOException ioe) {
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86 logger.error(ioe, ioe);
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87 }
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88 }
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89 }
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90 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org