Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/CSVExportServiceImpl.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 | 1f2f08211a5f |
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1 package de.intevation.flys.client.server; |
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2 |
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3 import java.util.ArrayList; |
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4 import java.util.List; |
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5 |
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6 import java.io.Reader; |
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7 import java.io.InputStream; |
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8 import java.io.InputStreamReader; |
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9 import java.io.IOException; |
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10 |
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11 import org.w3c.dom.Document; |
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12 import org.w3c.dom.Element; |
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13 |
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14 import org.apache.log4j.Logger; |
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15 |
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16 import com.google.gwt.user.server.rpc.RemoteServiceServlet; |
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17 |
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18 import au.com.bytecode.opencsv.CSVReader; |
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19 |
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20 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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21 import de.intevation.artifacts.common.utils.XMLUtils; |
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22 |
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23 import de.intevation.artifacts.httpclient.http.HttpClient; |
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24 import de.intevation.artifacts.httpclient.http.HttpClientImpl; |
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25 |
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26 import de.intevation.flys.client.shared.exceptions.ServerException; |
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27 import de.intevation.flys.client.client.services.CSVExportService; |
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28 |
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29 |
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30 /** |
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31 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a> |
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32 */ |
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33 public class CSVExportServiceImpl |
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34 extends RemoteServiceServlet |
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35 implements CSVExportService |
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36 { |
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37 private static final Logger logger = |
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38 Logger.getLogger(CSVExportServiceImpl.class); |
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39 |
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40 |
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41 public static final String ERROR_NO_EXPORT_FOUND = |
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42 "error_no_export_found"; |
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43 |
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44 public List<String[]> getCSV( |
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45 String locale, |
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46 String uuid, |
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47 String name) |
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48 throws ServerException |
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49 { |
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50 logger.info("CSVExportServiceImpl.getCSV"); |
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51 |
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52 String url = getServletContext().getInitParameter("server-url"); |
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53 |
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54 Document requestDoc = XMLUtils.newDocument(); |
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55 |
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56 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( |
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57 requestDoc, |
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58 ArtifactNamespaceContext.NAMESPACE_URI, |
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59 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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60 |
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61 Element action = ec.create("action"); |
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62 ec.addAttr(action, "type", "csv", true); |
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63 ec.addAttr(action, "name", name, true); |
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64 |
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65 requestDoc.appendChild(action); |
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66 |
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67 HttpClient client = new HttpClientImpl(url, locale); |
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68 |
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69 try { |
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70 InputStream in = client.collectionOut(requestDoc, uuid, "export"); |
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71 Reader reader = new InputStreamReader (in, "UTF-8"); |
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72 CSVReader csvReader = new CSVReader (reader); |
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73 |
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74 List<String[]> lines = new ArrayList<String[]>(); |
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75 String[] line = null; |
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76 |
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77 while ((line = csvReader.readNext()) != null) { |
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78 if (line != null) { |
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79 if (!line[0].startsWith("#") && line.length > 0) { |
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80 if (line[0].replace("'", "").length() > 0) { |
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81 lines.add(line); |
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82 } |
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83 } |
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84 } |
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85 } |
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86 |
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87 return lines; |
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88 } |
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89 catch (IOException ce) { |
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90 logger.error(ce.getLocalizedMessage()); |
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91 } |
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92 |
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93 throw new ServerException(ERROR_NO_EXPORT_FOUND); |
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94 } |
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95 } |
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96 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |