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comparison flys-client/src/main/java/de/intevation/flys/client/server/MapPrintServiceImpl.java @ 2502:328aa273ef3b

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Call MapPrinter directly and not via the MapFish Print servlet. flys-client/trunk@4347 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 04 May 2012 15:19:30 +0000
parents
children e3bd1f412421
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2501:87634a9a8478 2502:328aa273ef3b
1 package de.intevation.flys.client.server;
2
3 import java.io.File;
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.io.FileOutputStream;
7 import java.io.FileInputStream;
8 import java.io.BufferedInputStream;
9 import java.io.BufferedOutputStream;
10 import java.io.OutputStream;
11
12 import javax.servlet.ServletException;
13
14 import javax.servlet.http.HttpServlet;
15 import javax.servlet.http.HttpServletRequest;
16 import javax.servlet.http.HttpServletResponse;
17
18 import org.apache.log4j.Logger;
19
20 import org.mapfish.print.MapPrinter;
21
22 import org.mapfish.print.output.OutputFactory;
23 import org.mapfish.print.output.OutputFormat;
24
25 import org.mapfish.print.utils.PJsonObject;
26
27 public class MapPrintServiceImpl
28 extends HttpServlet
29 {
30 private static final Logger log =
31 Logger.getLogger(MapPrintServiceImpl.class);
32
33 private static final String DEMO_JSON =
34 "{" +
35 "\"layout\": \"A4 portrait\"," +
36 "\"title\": \"A simple example\"," +
37 "\"srs\": \"EPSG:4326\"," +
38 "\"dpi\": 254," +
39 "\"units\": \"degrees\"," +
40 "\"outputFormat\": \"pdf\"," +
41 "\"layers\": [{" +
42 " \"type\": \"WMS\"," +
43 " \"layers\": [\"basic\"]," +
44 " \"baseURL\": \"http://labs.metacarta.com/wms/vmap0\"," +
45 " \"format\": \"image/jpeg\"" +
46 "}," +
47 "{" +
48 " \"type\": \"WMS\"," +
49 " \"layers\": [\"routes\"]," +
50 " \"baseURL\": \"http://www.camptocamp.org/cgi-bin/mapserv_c2corg\"," +
51 " \"format\": \"image/png\"" +
52 "}, {" +
53 "\"opacity\": 0.5," +
54 "\"customParams\": {}," +
55 "\"type\": \"Vector\"," +
56 "\"styles\": {" +
57 " \"1\": {" +
58 " \"fillColor\": \"red\"," +
59 " \"strokeColor\": \"red\"," +
60 " \"fillOpacity\": 0.4000000000000001," +
61 " \"hoverFillColor\": \"white\"," +
62 " \"hoverFillOpacity\": 0.8000000000000002," +
63 " \"strokeOpacity\": 1," +
64 " \"strokeWidth\": 0.5," +
65 " \"strokeLinecap\": \"round\"," +
66 " \"strokeDashstyle\": \"solid\"," +
67 " \"hoverStrokeColor\": \"red\"," +
68 " \"hoverStrokeOpacity\": 1.0," +
69 " \"hoverStrokeWidth\": 0.2," +
70 " \"pointRadius\": 6," +
71 " \"hoverPointRadius\": 1," +
72 " \"hoverPointUnit\": \"%\"," +
73 " \"pointerEvents\": \"visiblePainted\"," +
74 " \"cursor\": \"inherit\"" +
75 " }" +
76 "}," +
77 "\"styleProperty\": \"_style\"," +
78 "\"geoJson\": {" +
79 " \"type\": \"FeatureCollection\"," +
80 " \"features\": [{" +
81 " \"type\": \"Feature\"," +
82 " \"id\": \"OpenLayers.Feature.Vector_243\"," +
83 " \"properties\": {" +
84 " \"_style\": 1," +
85 " \"name\": \"\"," +
86 " \"description\": \"\"," +
87 " \"ext-comp-1048\": \"default\"" +
88 " }," +
89 " \"geometry\": {" +
90 " \"type\": \"Polygon\"," +
91 " \"coordinates\": [[[5, 45], [5, 47], [7, 47], [7, 45], [5, 45]]]" +
92 " }" +
93 " }]" +
94 "}," +
95 "\"name\": \"Cosmetic\"" +
96 " }" +
97 "]," +
98 "\"pages\": [" +
99 " {" +
100 " \"center\": [6, 45.5]," +
101 " \"scale\": 4000000," +
102 " \"mapTitle\": \"First map\"," +
103 " \"comment\": \"This is the first page selected by the user.\"," +
104 " \"rotation\": 0," +
105 " \"data\": {" +
106 " \"data\": [" +
107 " {\"id\":1, \"name\": \"blah\", \"icon\": \"icon_pan\", \"nameBackgroundColor\": \"red\", \"nameBorderColor\": \"blue\"}," +
108 " {\"id\":2, \"name\": \"blip\", \"icon\": \"icon_zoomin\", \"nameBackgroundColor\": \"yellow\", \"nameBorderColor\": \"green\"}" +
109 " ]," +
110 " \"columns\": [\"id\", \"name\", \"icon\"]" +
111 " }" +
112 " },{" +
113 " \"center\": [6, 45.5]," +
114 " \"scale\": 4000000," +
115 " \"mapTitle\": \"First map\"," +
116 " \"comment\": \"This is the first page selected by the user.\"," +
117 " \"rotation\": 0," +
118 " \"data\": {" +
119 " \"data\": [" +
120 " {\"id\":1, \"name\": \"blah\", \"icon\": \"icon_pan\", \"nameBackgroundColor\": \"red\", \"nameBorderColor\": \"blue\"}," +
121 " {\"id\":2, \"name\": \"blip\", \"icon\": \"icon_zoomin\", \"nameBackgroundColor\": \"yellow\", \"nameBorderColor\": \"green\"}" +
122 " ]," +
123 " \"columns\": [\"id\", \"name\", \"icon\"]" +
124 " }" +
125 " }" +
126 "]" +
127 "}";
128
129
130 private MapPrinter getMapPrinter() throws ServletException, IOException {
131 String configPath = getInitParameter("config");
132 if (configPath == null) {
133 throw new ServletException("Missing configuration in web.xml");
134 }
135
136 File configFile = new File(configPath);
137 if (!configFile.isAbsolute()) {
138 configFile = new File(getServletContext().getRealPath(configPath));
139 }
140
141 if (!configFile.isFile() || !configFile.canRead()) {
142 throw new ServletException("Cannot read '" + configFile + "'");
143 }
144
145 return new MapPrinter(configFile);
146 }
147
148 @Override
149 public void doGet(HttpServletRequest req, HttpServletResponse resp)
150 throws ServletException, IOException
151 {
152 log.info("MapPrintServiceImpl.doGet");
153
154 PJsonObject jsonSpec = MapPrinter.parseSpec(DEMO_JSON);
155
156 MapPrinter printer = getMapPrinter();
157
158 OutputFormat outputFormat = OutputFactory.create(
159 printer.getConfig(), jsonSpec);
160
161 resp.setHeader("Content-Disposition", "attachment;filename=print.pdf");
162 resp.setHeader("Content-Type", "application/pdf");
163
164 // XXX: Streaming the generated PDF directly
165 // to the request out does not work. :-/
166 File tmpFile = File.createTempFile("map-printing", null);
167
168 try {
169 OutputStream out =
170 new BufferedOutputStream(
171 new FileOutputStream(tmpFile));
172 try {
173 outputFormat.print(printer, jsonSpec, out, "");
174 out.flush();
175 }
176 catch (Exception e) {
177 log.error(e);
178 throw new ServletException(e);
179 }
180 finally {
181 printer.stop();
182 out.close();
183 }
184 InputStream in =
185 new BufferedInputStream(
186 new FileInputStream(tmpFile));
187 out = resp.getOutputStream();
188 try {
189 byte [] buf = new byte[4096];
190 int r;
191 while ((r = in.read(buf)) >= 0) {
192 out.write(buf, 0, r);
193 }
194 out.flush();
195 }
196 finally {
197 in.close();
198 out.close();
199 }
200 }
201 finally {
202 if (tmpFile.exists()) {
203 tmpFile.delete();
204 }
205 }
206 }
207 }
208 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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