Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/ChartOutputServiceImpl.java @ 78:9ca5160cf080
Added a service that builds up requests to retrieve chart images. Use this service to display charts in the ChartOutputTab.
flys-client/trunk@1584 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Mon, 28 Mar 2011 10:45:45 +0000 |
| parents | |
| children | 7ea004d0ffbc |
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| 77:5b5ec0403844 | 78:9ca5160cf080 |
|---|---|
| 1 package de.intevation.flys.client.server; | |
| 2 | |
| 3 import java.io.OutputStream; | |
| 4 import java.io.IOException; | |
| 5 import java.util.HashMap; | |
| 6 import java.util.Map; | |
| 7 | |
| 8 import org.w3c.dom.Document; | |
| 9 | |
| 10 import javax.servlet.http.HttpServlet; | |
| 11 import javax.servlet.http.HttpServletRequest; | |
| 12 import javax.servlet.http.HttpServletResponse; | |
| 13 | |
| 14 import de.intevation.artifacts.httpclient.http.HttpClient; | |
| 15 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
| 16 import de.intevation.artifacts.httpclient.objects.Artifact; | |
| 17 import de.intevation.artifacts.httpclient.utils.ArtifactProtocolUtils; | |
| 18 | |
| 19 | |
| 20 /** | |
| 21 * This service is used to request a chart from the artifact server. The | |
| 22 * response is directed directly to the output stream, so the image that is | |
| 23 * retrieved is displayed in the UI afterwards. | |
| 24 * | |
| 25 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 26 */ | |
| 27 public class ChartOutputServiceImpl | |
| 28 extends HttpServlet | |
| 29 { | |
| 30 public void doGet(HttpServletRequest req, HttpServletResponse resp) { | |
| 31 System.out.println("ChartOutputServiceImpl.doGet"); | |
| 32 | |
| 33 try { | |
| 34 OutputStream out = resp.getOutputStream(); | |
| 35 | |
| 36 String serverUrl = req.getParameter("server"); | |
| 37 String uuid = req.getParameter("uuid"); | |
| 38 String hash = req.getParameter("hash"); | |
| 39 String width = req.getParameter("width"); | |
| 40 String height = req.getParameter("height"); | |
| 41 String target = req.getParameter("target"); | |
| 42 String mimeType = "image/png"; | |
| 43 | |
| 44 Map opts = new HashMap(); | |
| 45 opts.put("width", width); | |
| 46 opts.put("height", height); | |
| 47 opts.put("mimeType", mimeType); | |
| 48 opts.put("points", "false"); | |
| 49 | |
| 50 Document chart = ArtifactProtocolUtils.createChartDocument( | |
| 51 new Artifact(hash, uuid), opts); | |
| 52 | |
| 53 HttpClient client = new HttpClientImpl(serverUrl); | |
| 54 client.out(new Artifact(uuid, hash), chart, target, out); | |
| 55 | |
| 56 out.close(); | |
| 57 out.flush(); | |
| 58 } | |
| 59 catch (IOException ioe) { | |
| 60 System.err.println(ioe.getMessage()); | |
| 61 } | |
| 62 } | |
| 63 } |