Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/DischargeInfoXML.java @ 9726:0a5239a1e46e 3.2.x

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Upgrade to Log4j 2
author Tom Gottfried <tom@intevation.de>
date Wed, 02 Mar 2022 10:26:50 +0100
parents 238fc722f87a
children
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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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.logging.log4j.Logger;
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19 import org.apache.logging.log4j.LogManager;
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20
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21 import javax.servlet.http.HttpServlet;
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22 import javax.servlet.http.HttpServletRequest;
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23 import javax.servlet.http.HttpServletResponse;
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24
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25 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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26 import org.dive4elements.artifacts.common.utils.XMLUtils;
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27
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28 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
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29 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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30 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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31 import org.dive4elements.artifacts.httpclient.http.response.StreamResponseHandler;
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32
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33
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34 /**
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35 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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36 */
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37 public class DischargeInfoXML
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38 extends HttpServlet
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39 {
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40 private static final Logger log = LogManager.getLogger(DischargeInfoXML.class);
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41
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42
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43 public static final String ERROR_NO_DISTANCEINFO_FOUND =
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44 "error_no_dischargeinfo_found";
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45
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46
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47 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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48 log.info("DischargeInfoXML.doGet");
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49
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50 String url = getServletContext().getInitParameter("server-url");
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51
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52 String gauge = req.getParameter("gauge");
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53
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54 String river = req.getParameter("river");
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55
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56 Document doc = XMLUtils.newDocument();
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57
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58 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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59 doc,
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60 ArtifactNamespaceContext.NAMESPACE_URI,
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61 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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62
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63 Element gaugeEl = ec.create("gauge");
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64 gaugeEl.setTextContent(gauge);
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65
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66 if (river != null && !river.isEmpty()) {
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67 Element riverEl = ec.create("river");
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68 riverEl.setTextContent(river);
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69 gaugeEl.appendChild(riverEl);
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70 }
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71
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72 doc.appendChild(gaugeEl);
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73
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74 HttpClient client = new HttpClientImpl(url);
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75
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76 try {
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77 InputStream in = (InputStream) client.callService(
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78 url, "dischargeinfo", doc, new StreamResponseHandler());
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79
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80 OutputStream out = resp.getOutputStream();
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81
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82 byte[] b = new byte[4096];
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83 int i;
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84 while ((i = in.read(b)) >= 0) {
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85 out.write(b, 0, i);
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86 }
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87
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88 out.flush();
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89 out.close();
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90 }
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91 catch (ConnectionException ce) {
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92 log.error(ce, ce);
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93 }
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94 catch (IOException ioe) {
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95 log.error(ioe, ioe);
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96 }
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97 }
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98 }
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99 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org