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1
51 import java.io.*;
52 import java.util.Vector  ;
53
54 import java.awt.print.PrinterJob ;
55 import java.awt.print.PrinterException ;
56
57 import javax.servlet.*;
58 import javax.servlet.http.*;
59
60 import org.xml.sax.InputSource ;
61
62 import org.apache.fop.apps.Driver;
63 import org.apache.fop.layout.Page;
64 import org.apache.fop.apps.XSLTInputHandler;
65 import org.apache.fop.messaging.MessageHandler;
66
67 import org.apache.fop.render.awt.AWTRenderer ;
68
69 import org.apache.avalon.framework.logger.ConsoleLogger;
70 import org.apache.avalon.framework.logger.Logger;
71
72
94
95 public class FopPrintServlet extends HttpServlet {
96 public static final String FO_REQUEST_PARAM = "fo";
97 public static final String XML_REQUEST_PARAM = "xml";
98 public static final String XSL_REQUEST_PARAM = "xsl";
99 Logger log = null;
100
101 public void doGet(HttpServletRequest request,
102 HttpServletResponse response) throws ServletException {
103 if (log == null) {
104 log = new ConsoleLogger(ConsoleLogger.LEVEL_WARN);
105 MessageHandler.setScreenLogger(log);
106 }
107
108 try {
109 String foParam = request.getParameter(FO_REQUEST_PARAM);
110 String xmlParam = request.getParameter(XML_REQUEST_PARAM);
111 String xslParam = request.getParameter(XSL_REQUEST_PARAM);
112
113 if (foParam != null) {
114 FileInputStream file = new FileInputStream(foParam);
115 renderFO(new InputSource (file), response);
116 } else if ((xmlParam != null) && (xslParam != null)) {
117 XSLTInputHandler input =
118 new XSLTInputHandler(new File(xmlParam),
119 new File(xslParam));
120 renderXML(input, response);
121 } else {
122 response.setContentType ("text/html");
123
124 PrintWriter out = response.getWriter();
125 out.println("<html><title>Error</title>\n"+ "<body><h1>FopServlet Error</h1><h3>No 'fo' or 'xml/xsl' "+
126 "request param given.</h3></body></html>");
127 }
128 } catch (ServletException ex) {
129 throw ex;
130 }
131 catch (Exception ex) {
132 throw new ServletException(ex);
133 }
134 }
135
136
139 public void renderFO(InputSource foFile,
140 HttpServletResponse response) throws ServletException {
141 try {
142 Driver driver = new Driver(foFile, null);
143 PrinterJob pj = PrinterJob.getPrinterJob();
144 PrintRenderer renderer = new PrintRenderer(pj);
145
146 driver.setLogger (log);
147 driver.setRenderer(renderer);
148 driver.run();
149
150 reportOK (response);
151 } catch (Exception ex) {
152 throw new ServletException(ex);
153 }
154 }
155
156
159 public void renderXML(XSLTInputHandler input,
160 HttpServletResponse response) throws ServletException {
161 try {
162 Driver driver = new Driver();
163 PrinterJob pj = PrinterJob.getPrinterJob();
164 PrintRenderer renderer = new PrintRenderer(pj);
165
166 pj.setCopies(1);
167
168 driver.setLogger (log);
169 driver.setRenderer (renderer);
170 driver.render (input.getParser(), input.getInputSource());
171
172 reportOK (response);
173 } catch (Exception ex) {
174 throw new ServletException(ex);
175 }
176 }
177
178 private void reportOK (HttpServletResponse response)
180 throws ServletException {
181 String sMsg =
182 "<html><title>Success</title>\n" + "<body><h1>FopPrintServlet: </h1>" +
183 "<h3>The requested data was printed</h3></body></html>" ;
184
185 response.setContentType ("text/html");
186 response.setContentLength (sMsg.length());
187
188 try {
189 PrintWriter out = response.getWriter();
190 out.println (sMsg);
191 out.flush();
192 } catch (Exception ex) {
193 throw new ServletException(ex);
194 }
195 }
196
197 class PrintRenderer extends AWTRenderer {
199
200 private static final int EVEN_AND_ALL = 0;
201 private static final int EVEN = 1;
202 private static final int ODD = 2;
203
204 private int startNumber;
205 private int endNumber;
206 private int mode = EVEN_AND_ALL;
207 private int copies = 1;
208 private PrinterJob printerJob;
209
210 PrintRenderer(PrinterJob printerJob) {
211 super(null);
212
213 this.printerJob = printerJob;
214 startNumber = 0 ;
215 endNumber = -1;
216
217 printerJob.setPageable(this);
218
219 mode = EVEN_AND_ALL;
220 String str = System.getProperty("even");
221 if (str != null) {
222 try {
223 mode = Boolean.valueOf(str).booleanValue() ? EVEN : ODD;
224 } catch (Exception e) {}
225
226 }
227 }
228
229 public void stopRenderer(OutputStream outputStream)
230 throws IOException {
231 super.stopRenderer(outputStream);
232
233 if (endNumber == -1)
234 endNumber = getPageCount();
235
236 Vector numbers = getInvalidPageNumbers();
237 for (int i = numbers.size() - 1; i > -1; i--)
238 removePage(
239 Integer.parseInt((String ) numbers.elementAt(i)));
240
241 try {
242 printerJob.print();
243 } catch (PrinterException e) {
244 e.printStackTrace();
245 throw new IOException("Unable to print: " +
246 e.getClass().getName() + ": " + e.getMessage());
247 }
248 }
249
250 public void renderPage(Page page) {
251 pageWidth = (int)((float) page.getWidth() / 1000f);
252 pageHeight = (int)((float) page.getHeight() / 1000f);
253 super.renderPage(page);
254 }
255
256
257 private Vector getInvalidPageNumbers() {
258
259 Vector vec = new Vector ();
260 int max = getPageCount();
261 boolean isValid;
262 for (int i = 0; i < max; i++) {
263 isValid = true;
264 if (i < startNumber || i > endNumber) {
265 isValid = false;
266 } else if (mode != EVEN_AND_ALL) {
267 if (mode == EVEN && ((i + 1) % 2 != 0))
268 isValid = false;
269 else if (mode == ODD && ((i + 1) % 2 != 1))
270 isValid = false;
271 }
272
273 if (!isValid)
274 vec.add(i + "");
275 }
276
277 return vec;
278 }
279 }
281 }
282
283 |
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