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annotate flys-client/src/main/java/de/intevation/flys/client/server/DistanceInfoXML.java @ 1409:ec6e4dad1279

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Read and display all FLYS relevant information of Capabilities documents. flys-client/trunk@3296 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 21 Nov 2011 18:15:44 +0000
parents ab8eb2f544f2
children bc06a671ef60
rev   line source
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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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11
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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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32
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33
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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 river = req.getParameter("river");
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42 String url = req.getParameter("server");
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43 String filter = req.getParameter("filter");
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44
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45 Document doc = XMLUtils.newDocument();
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46
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47 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
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48 doc,
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49 ArtifactNamespaceContext.NAMESPACE_URI,
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50 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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51
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52 Element riverEl = ec.create("river");
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53 riverEl.setTextContent(river);
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54
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55 doc.appendChild(riverEl);
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56
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57 if (filter != null && filter.length() > 0) {
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58 Element typeEl = ec.create("filter");
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59 typeEl.setTextContent(filter);
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60
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61 riverEl.appendChild(typeEl);
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62 }
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63
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64 HttpClient client = new HttpClientImpl(url);
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65
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66 try {
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67 InputStream in = (InputStream) client.callService(
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68 url, "distanceinfo", doc, new StreamResponseHandler());
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69
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70 OutputStream out = resp.getOutputStream();
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71
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72 byte[] b = new byte[4096];
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73 int i;
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74 while ((i = in.read(b)) >= 0) {
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75 out.write(b, 0, i);
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76 }
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77
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78 out.flush();
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79 out.close();
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80 }
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81 catch (ConnectionException ce) {
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82 logger.error(ce, ce);
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83 }
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84 catch (IOException ioe) {
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85 logger.error(ioe, ioe);
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86 }
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87 }
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88 }
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89 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org