Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DistanceInfoXML.java @ 5818:a4ff4167be1e

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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
rev   line source
782
4a7ece57f44c #159 The tables in the WQ panel for calculation 4 are now filled with data.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.flys.client.server;
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2
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3 import java.io.InputStream;
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4 import java.io.IOException;
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5 import java.io.OutputStream;
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6
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7 import org.w3c.dom.Document;
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8 import org.w3c.dom.Element;
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9
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10 import org.apache.log4j.Logger;
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12 import javax.servlet.http.HttpServlet;
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13 import javax.servlet.http.HttpServletRequest;
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14 import javax.servlet.http.HttpServletResponse;
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15
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16 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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17 import de.intevation.artifacts.common.utils.XMLUtils;
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18
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19 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
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20 import de.intevation.artifacts.httpclient.http.HttpClient;
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21 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
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22 import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler;
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23
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25 /**
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26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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27 */
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28 public class DistanceInfoXML
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29 extends HttpServlet
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30 {
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31 private static final Logger logger = Logger.getLogger(DistanceInfoXML.class);
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34 public static final String ERROR_NO_DISTANCEINFO_FOUND =
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35 "error_no_distanceinfo_found";
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38 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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39 logger.info("DistanceInfoXML.doGet");
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41 String url = getServletContext().getInitParameter("server-url");
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42
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43 String river = req.getParameter("river");
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44 String filter = req.getParameter("filter");
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45
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46 Document doc = XMLUtils.newDocument();
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47
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48 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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49 doc,
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50 ArtifactNamespaceContext.NAMESPACE_URI,
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51 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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52
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53 Element riverEl = ec.create("river");
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54 riverEl.setTextContent(river);
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55
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56 doc.appendChild(riverEl);
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57
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58 if (filter != null && filter.length() > 0) {
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59 Element typeEl = ec.create("filter");
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60 typeEl.setTextContent(filter);
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61
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62 riverEl.appendChild(typeEl);
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63 }
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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, "distanceinfo", 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