Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/MapPrintServiceImpl.java @ 2504:425bc486a40f
Generate map print spec dynamically from artifact
flys-client/trunk@4349 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Fri, 04 May 2012 18:31:03 +0000 |
parents | e3bd1f412421 |
children | 47d07709ba09 |
rev | line source |
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1 package de.intevation.flys.client.server; |
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2 |
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3 import java.io.File; |
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4 import java.io.IOException; |
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5 import java.io.InputStream; |
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6 import java.io.FileOutputStream; |
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7 import java.io.FileInputStream; |
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8 import java.io.BufferedInputStream; |
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9 import java.io.BufferedOutputStream; |
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10 import java.io.OutputStream; |
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11 |
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12 import java.util.List; |
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13 import java.util.Map; |
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14 import java.util.ArrayList; |
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15 import java.util.LinkedHashMap; |
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16 |
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17 import javax.servlet.ServletException; |
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18 |
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19 import javax.servlet.http.HttpServlet; |
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20 import javax.servlet.http.HttpServletRequest; |
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21 import javax.servlet.http.HttpServletResponse; |
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22 |
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23 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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24 |
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25 import de.intevation.artifacts.common.utils.ClientProtocolUtils; |
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26 import de.intevation.artifacts.common.utils.JSON; |
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27 import de.intevation.artifacts.common.utils.StringUtils; |
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28 import de.intevation.artifacts.common.utils.XMLUtils; |
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29 |
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30 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; |
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31 |
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32 import de.intevation.artifacts.httpclient.http.HttpClient; |
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33 import de.intevation.artifacts.httpclient.http.HttpClientImpl; |
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34 |
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35 import de.intevation.flys.client.shared.model.MapConfig; |
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36 |
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37 import org.apache.log4j.Logger; |
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38 |
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39 import org.mapfish.print.MapPrinter; |
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40 |
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41 import org.mapfish.print.output.OutputFactory; |
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42 import org.mapfish.print.output.OutputFormat; |
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43 |
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44 import org.mapfish.print.utils.PJsonObject; |
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45 |
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46 import org.w3c.dom.Document; |
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47 import org.w3c.dom.Element; |
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48 import org.w3c.dom.NodeList; |
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49 |
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50 public class MapPrintServiceImpl |
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51 extends HttpServlet |
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52 { |
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53 private static final Logger log = |
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54 Logger.getLogger(MapPrintServiceImpl.class); |
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55 |
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56 protected static String generateSpec( |
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57 Document document, |
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58 double minX, double minY, |
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59 double maxX, double maxY |
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60 ) { |
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61 System.err.println(XMLUtils.toString(document)); |
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62 MapConfig mapConfig = MapHelper.parseConfig(document); |
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63 |
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64 Map<String, Object> spec = new LinkedHashMap<String, Object>(); |
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65 spec.put("layout", "A4 portrait"); |
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66 spec.put("title", "FLYS Druck"); |
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67 spec.put("srs", "EPSG:" + mapConfig.getSrid()); |
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68 spec.put("dpi", Integer.valueOf(254)); |
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69 spec.put("units", "degrees"); |
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70 spec.put("outputFormat", "pdf"); |
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71 |
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72 List<Object> layers = new ArrayList<Object>(); |
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73 |
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74 String ns = ArtifactNamespaceContext.NAMESPACE_URI; |
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75 |
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76 NodeList facets = document.getElementsByTagNameNS(ns, "facet"); |
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77 |
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78 for (int i = 0, N = facets.getLength(); i < N; ++i) { |
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79 Element element = (Element)facets.item(i); |
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80 if (!element.getParentNode().getLocalName().equals("layers")) { |
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81 continue; |
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82 } |
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83 Map<String, Object> layer = new LinkedHashMap<String, Object>(); |
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84 |
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85 layer.put("type", "WMS"); |
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86 List<Object> subLayers = new ArrayList<Object>(1); |
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87 subLayers.add(element.getAttributeNS(ns, "layers")); |
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88 layer.put("layers", subLayers); |
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89 layer.put("baseURL", element.getAttributeNS(ns, "url")); |
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90 layer.put("format", "image/png"); |
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91 |
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92 layers.add(layer); |
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93 } |
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94 |
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95 spec.put("layers", layers); |
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96 spec.put("name", "Name"); |
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97 |
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98 List<Object> pages = new ArrayList<Object>(1); |
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99 |
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100 spec.put("pages", pages); |
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101 |
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102 Map<String, Object> page = new LinkedHashMap<String, Object>(); |
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103 |
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104 List<Object> bounds = new ArrayList<Object>(4); |
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105 bounds.add(Double.valueOf(minX)); |
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106 bounds.add(Double.valueOf(minY)); |
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107 bounds.add(Double.valueOf(maxX)); |
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108 bounds.add(Double.valueOf(maxY)); |
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109 |
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110 page.put("bbox", bounds); |
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111 |
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112 page.put("mapTitle", "FLYS Karte"); |
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113 page.put("comment", "Eine mit FLYS gedruckte Karte."); |
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114 page.put("rotation", Integer.valueOf(0)); |
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115 |
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116 pages.add(page); |
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117 |
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118 return JSON.toJSONString(spec); |
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119 } |
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120 |
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121 |
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122 @Override |
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123 public void doGet(HttpServletRequest req, HttpServletResponse resp) |
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124 throws ServletException, IOException |
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125 { |
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126 log.info("MapPrintServiceImpl.doGet"); |
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127 |
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128 String uuid = req.getParameter("uuid"); |
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129 |
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130 if (uuid == null || !StringUtils.checkUUID(uuid)) { |
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131 throw new ServletException("Missing or misspelled UUID"); |
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132 } |
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133 |
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134 String minXS = req.getParameter("minx"); |
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135 String maxXS = req.getParameter("maxx"); |
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136 String minYS = req.getParameter("miny"); |
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137 String maxYS = req.getParameter("maxy"); |
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138 |
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139 if (minXS == null || maxXS == null |
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140 || minYS == null || maxYS == null) { |
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141 throw new ServletException("Missing minX, minY, maxX or maxY"); |
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142 } |
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143 |
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144 double minX, maxX, minY, maxY; |
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145 |
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146 try { |
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147 minX = Double.parseDouble(minXS); |
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148 minY = Double.parseDouble(minYS); |
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149 maxX = Double.parseDouble(maxXS); |
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150 maxY = Double.parseDouble(maxYS); |
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151 } |
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152 catch (NumberFormatException nfe) { |
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153 throw new ServletException("Misspelled minX, minY, maxX or maxY"); |
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154 } |
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155 |
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156 String mapType = req.getParameter("maptype"); |
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157 |
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158 if (mapType == null || !mapType.equals("map")) { |
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159 mapType = "floodmap"; |
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160 } |
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161 |
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162 String url = getURL(); |
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163 |
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164 Document request = ClientProtocolUtils.newOutCollectionDocument( |
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165 uuid, mapType, mapType); |
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166 |
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167 Document result; |
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168 try { |
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169 HttpClient client = new HttpClientImpl(url); |
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170 InputStream is = client.collectionOut(request, uuid, mapType); |
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171 try { |
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172 result = XMLUtils.parseDocument(is); |
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173 } |
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174 finally { |
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175 is.close(); |
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176 } |
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177 } |
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178 catch (ConnectionException ce) { |
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179 log.error(ce); |
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180 throw new ServletException(ce); |
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181 } |
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182 |
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183 String spec = generateSpec( |
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184 result, |
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185 minX, minY, |
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186 maxX, maxY); |
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187 |
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188 if (log.isDebugEnabled()) { |
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189 log.debug(spec); |
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190 //System.err.println(spec); |
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191 } |
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192 |
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193 producePDF(spec, resp); |
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194 } |
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195 |
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196 protected String getURL() throws ServletException { |
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197 String url = getServletContext().getInitParameter("server-url"); |
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198 if (url == null) { |
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199 throw new ServletException("Missing server-url"); |
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200 } |
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201 return url; |
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202 } |
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203 |
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204 protected MapPrinter getMapPrinter() throws ServletException, IOException { |
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205 String configPath = getInitParameter("config"); |
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206 if (configPath == null) { |
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207 throw new ServletException("Missing configuration in web.xml"); |
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208 } |
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209 |
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210 File configFile = new File(configPath); |
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211 if (!configFile.isAbsolute()) { |
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212 configFile = new File(getServletContext().getRealPath(configPath)); |
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213 } |
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214 |
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215 if (!configFile.isFile() || !configFile.canRead()) { |
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216 throw new ServletException("Cannot read '" + configFile + "'"); |
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217 } |
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218 |
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219 return new MapPrinter(configFile); |
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220 } |
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221 |
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222 |
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223 protected void producePDF(String json, HttpServletResponse resp) |
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224 throws ServletException, IOException |
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225 { |
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Generate map print spec dynamically from artifact
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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226 PJsonObject jsonSpec = MapPrinter.parseSpec(json); |
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Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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227 |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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228 MapPrinter printer = getMapPrinter(); |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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229 |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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230 OutputFormat outputFormat = OutputFactory.create( |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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231 printer.getConfig(), jsonSpec); |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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232 |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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233 resp.setHeader("Content-Disposition", "attachment;filename=print.pdf"); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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234 resp.setHeader("Content-Type", "application/pdf"); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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235 |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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236 // XXX: Streaming the generated PDF directly |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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237 // to the request out does not work. :-/ |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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238 File tmpFile = File.createTempFile("map-printing", null); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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239 |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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240 try { |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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241 OutputStream out = |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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242 new BufferedOutputStream( |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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243 new FileOutputStream(tmpFile)); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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244 try { |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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245 outputFormat.print(printer, jsonSpec, out, ""); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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246 out.flush(); |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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247 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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248 catch (Exception e) { |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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249 log.error(e); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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250 throw new ServletException(e); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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251 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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252 finally { |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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253 printer.stop(); |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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254 out.close(); |
328aa273ef3b
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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255 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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256 InputStream in = |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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257 new BufferedInputStream( |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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258 new FileInputStream(tmpFile)); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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259 out = resp.getOutputStream(); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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260 try { |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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261 byte [] buf = new byte[4096]; |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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262 int r; |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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263 while ((r = in.read(buf)) >= 0) { |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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264 out.write(buf, 0, r); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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265 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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266 out.flush(); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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267 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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268 finally { |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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269 in.close(); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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270 out.close(); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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271 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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272 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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273 finally { |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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274 if (tmpFile.exists()) { |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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275 tmpFile.delete(); |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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276 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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277 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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278 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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279 } |
328aa273ef3b
Call MapPrinter directly and not via the MapFish Print servlet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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280 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |