Mercurial > dive4elements > river
comparison gwt-client/src/main/java/org/dive4elements/river/client/server/DistanceInfoXML.java @ 5838:5aa05a7a34b7
Rename modules to more fitting names.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 15:23:37 +0200 |
| parents | flys-client/src/main/java/org/dive4elements/river/client/server/DistanceInfoXML.java@821a02bbfb4e |
| children | 172338b1407f |
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| 5837:d9901a08d0a6 | 5838:5aa05a7a34b7 |
|---|---|
| 1 package org.dive4elements.river.client.server; | |
| 2 | |
| 3 import java.io.InputStream; | |
| 4 import java.io.IOException; | |
| 5 import java.io.OutputStream; | |
| 6 | |
| 7 import org.w3c.dom.Document; | |
| 8 import org.w3c.dom.Element; | |
| 9 | |
| 10 import org.apache.log4j.Logger; | |
| 11 | |
| 12 import javax.servlet.http.HttpServlet; | |
| 13 import javax.servlet.http.HttpServletRequest; | |
| 14 import javax.servlet.http.HttpServletResponse; | |
| 15 | |
| 16 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; | |
| 17 import org.dive4elements.artifacts.common.utils.XMLUtils; | |
| 18 | |
| 19 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException; | |
| 20 import org.dive4elements.artifacts.httpclient.http.HttpClient; | |
| 21 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl; | |
| 22 import org.dive4elements.artifacts.httpclient.http.response.StreamResponseHandler; | |
| 23 | |
| 24 | |
| 25 /** | |
| 26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 27 */ | |
| 28 public class DistanceInfoXML | |
| 29 extends HttpServlet | |
| 30 { | |
| 31 private static final Logger logger = Logger.getLogger(DistanceInfoXML.class); | |
| 32 | |
| 33 | |
| 34 public static final String ERROR_NO_DISTANCEINFO_FOUND = | |
| 35 "error_no_distanceinfo_found"; | |
| 36 | |
| 37 | |
| 38 public void doGet(HttpServletRequest req, HttpServletResponse resp) { | |
| 39 logger.info("DistanceInfoXML.doGet"); | |
| 40 | |
| 41 String url = getServletContext().getInitParameter("server-url"); | |
| 42 | |
| 43 String river = req.getParameter("river"); | |
| 44 String filter = req.getParameter("filter"); | |
| 45 | |
| 46 Document doc = XMLUtils.newDocument(); | |
| 47 | |
| 48 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( | |
| 49 doc, | |
| 50 ArtifactNamespaceContext.NAMESPACE_URI, | |
| 51 ArtifactNamespaceContext.NAMESPACE_PREFIX); | |
| 52 | |
| 53 Element riverEl = ec.create("river"); | |
| 54 riverEl.setTextContent(river); | |
| 55 | |
| 56 doc.appendChild(riverEl); | |
| 57 | |
| 58 if (filter != null && filter.length() > 0) { | |
| 59 Element typeEl = ec.create("filter"); | |
| 60 typeEl.setTextContent(filter); | |
| 61 | |
| 62 riverEl.appendChild(typeEl); | |
| 63 } | |
| 64 | |
| 65 HttpClient client = new HttpClientImpl(url); | |
| 66 | |
| 67 try { | |
| 68 InputStream in = (InputStream) client.callService( | |
| 69 url, "distanceinfo", doc, new StreamResponseHandler()); | |
| 70 | |
| 71 OutputStream out = resp.getOutputStream(); | |
| 72 | |
| 73 byte[] b = new byte[4096]; | |
| 74 int i; | |
| 75 while ((i = in.read(b)) >= 0) { | |
| 76 out.write(b, 0, i); | |
| 77 } | |
| 78 | |
| 79 out.flush(); | |
| 80 out.close(); | |
| 81 } | |
| 82 catch (ConnectionException ce) { | |
| 83 logger.error(ce, ce); | |
| 84 } | |
| 85 catch (IOException ioe) { | |
| 86 logger.error(ioe, ioe); | |
| 87 } | |
| 88 } | |
| 89 } | |
| 90 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |