Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/DischargeInfoXML.java @ 1600:67468c90ca68
Added service to request discharge infos at a specific gauge.
flys-client/trunk@3938 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Raimund Renkert <raimund.renkert@intevation.de> |
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date | Mon, 06 Feb 2012 16:01:22 +0000 |
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1599:4ba6f1fb3a03 | 1600:67468c90ca68 |
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1 package de.intevation.flys.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 de.intevation.artifacts.common.ArtifactNamespaceContext; | |
17 import de.intevation.artifacts.common.utils.XMLUtils; | |
18 | |
19 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; | |
20 import de.intevation.artifacts.httpclient.http.HttpClient; | |
21 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
22 import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler; | |
23 | |
24 | |
25 /** | |
26 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> | |
27 */ | |
28 public class DischargeInfoXML | |
29 extends HttpServlet | |
30 { | |
31 private static final Logger logger = Logger.getLogger(DischargeInfoXML.class); | |
32 | |
33 | |
34 public static final String ERROR_NO_DISTANCEINFO_FOUND = | |
35 "error_no_dischargeinfo_found"; | |
36 | |
37 | |
38 public void doGet(HttpServletRequest req, HttpServletResponse resp) { | |
39 logger.info("DischargeInfoXML.doGet"); | |
40 | |
41 String url = getServletContext().getInitParameter("server-url"); | |
42 | |
43 String gauge = req.getParameter("gauge"); | |
44 | |
45 Document doc = XMLUtils.newDocument(); | |
46 | |
47 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( | |
48 doc, | |
49 ArtifactNamespaceContext.NAMESPACE_URI, | |
50 ArtifactNamespaceContext.NAMESPACE_PREFIX); | |
51 | |
52 Element gaugeEl = ec.create("gauge"); | |
53 gaugeEl.setTextContent(gauge); | |
54 | |
55 doc.appendChild(gaugeEl); | |
56 | |
57 HttpClient client = new HttpClientImpl(url); | |
58 | |
59 try { | |
60 InputStream in = (InputStream) client.callService( | |
61 url, "dischargeinfo", doc, new StreamResponseHandler()); | |
62 | |
63 OutputStream out = resp.getOutputStream(); | |
64 | |
65 byte[] b = new byte[4096]; | |
66 int i; | |
67 while ((i = in.read(b)) >= 0) { | |
68 out.write(b, 0, i); | |
69 } | |
70 | |
71 out.flush(); | |
72 out.close(); | |
73 } | |
74 catch (ConnectionException ce) { | |
75 logger.error(ce, ce); | |
76 } | |
77 catch (IOException ioe) { | |
78 logger.error(ioe, ioe); | |
79 } | |
80 } | |
81 } | |
82 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |