Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/DischargeInfoXML.java @ 3497:88feb3347aa5
Implement a ProxyServlet
Implement a ProxyServlet to be able to restrict the access to the
mapserver too. All queries to the provided map services should go throught
this new ProxyServlet. Currently the ProxyServlet can only handle HTTP GET
requests.
flys-client/trunk@5221 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Bjoern Ricks <bjoern.ricks@intevation.de> |
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date | Thu, 16 Aug 2012 14:42:36 +0000 |
parents | 67468c90ca68 |
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rev | line source |
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1600
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Added service to request discharge infos at a specific gauge.
Raimund Renkert <raimund.renkert@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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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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24 |
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25 /** |
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26 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> |
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27 */ |
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28 public class DischargeInfoXML |
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29 extends HttpServlet |
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30 { |
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31 private static final Logger logger = Logger.getLogger(DischargeInfoXML.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_dischargeinfo_found"; |
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36 |
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37 |
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38 public void doGet(HttpServletRequest req, HttpServletResponse resp) { |
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39 logger.info("DischargeInfoXML.doGet"); |
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40 |
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41 String url = getServletContext().getInitParameter("server-url"); |
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42 |
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43 String gauge = req.getParameter("gauge"); |
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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 gaugeEl = ec.create("gauge"); |
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53 gaugeEl.setTextContent(gauge); |
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54 |
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55 doc.appendChild(gaugeEl); |
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56 |
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57 HttpClient client = new HttpClientImpl(url); |
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58 |
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59 try { |
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60 InputStream in = (InputStream) client.callService( |
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61 url, "dischargeinfo", doc, new StreamResponseHandler()); |
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62 |
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63 OutputStream out = resp.getOutputStream(); |
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64 |
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65 byte[] b = new byte[4096]; |
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66 int i; |
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67 while ((i = in.read(b)) >= 0) { |
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68 out.write(b, 0, i); |
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69 } |
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70 |
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71 out.flush(); |
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72 out.close(); |
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73 } |
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74 catch (ConnectionException ce) { |
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75 logger.error(ce, ce); |
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76 } |
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77 catch (IOException ioe) { |
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78 logger.error(ioe, ioe); |
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79 } |
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80 } |
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81 } |
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82 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |